/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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:04,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:04,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:04,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:04,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:04,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:04,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:04,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:04,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:04,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:04,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:04,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:04,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:04,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:04,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:04,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:04,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:04,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:04,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:04,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:04,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:04,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:04,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:04,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:04,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:04,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:04,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:04,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:04,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:04,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:04,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:04,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:04,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:04,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:04,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:04,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:04,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:04,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:04,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:04,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:04,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:04,845 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 11:18:04,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:04,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:04,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:04,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:04,900 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:04,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:04,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:04,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:04,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:04,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:04,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:04,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:04,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:04,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:04,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:04,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:04,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:04,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:04,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:04,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:04,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:04,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:04,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:04,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:04,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:04,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:04,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:04,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:04,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:04,909 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 11:18:05,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:05,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:05,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:05,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:05,403 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:05,404 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 11:18:05,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/082c73a80/8b278f6249484d308d70d5647be4ef1e/FLAG7ceba2ece [2020-09-25 11:18:06,196 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:06,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 11:18:06,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/082c73a80/8b278f6249484d308d70d5647be4ef1e/FLAG7ceba2ece [2020-09-25 11:18:06,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/082c73a80/8b278f6249484d308d70d5647be4ef1e [2020-09-25 11:18:06,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:06,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:06,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:06,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:06,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:06,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:06" (1/1) ... [2020-09-25 11:18:06,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:06, skipping insertion in model container [2020-09-25 11:18:06,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:06" (1/1) ... [2020-09-25 11:18:06,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:06,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:07,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:07,097 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:07,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:07,247 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:07,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:07 WrapperNode [2020-09-25 11:18:07,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:07,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:07,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:07,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:07,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:07" (1/1) ... [2020-09-25 11:18:07,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:07" (1/1) ... [2020-09-25 11:18:07,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:07" (1/1) ... [2020-09-25 11:18:07,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:07" (1/1) ... [2020-09-25 11:18:07,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:07" (1/1) ... [2020-09-25 11:18:07,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:07" (1/1) ... [2020-09-25 11:18:07,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:07" (1/1) ... [2020-09-25 11:18:07,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:07,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:07,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:07,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:07,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:07" (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 11:18:07,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:07,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:07,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:07,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:07,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:09,003 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:09,004 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:09,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:09 BoogieIcfgContainer [2020-09-25 11:18:09,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:09,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:09,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:09,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:09,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:06" (1/3) ... [2020-09-25 11:18:09,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:09, skipping insertion in model container [2020-09-25 11:18:09,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:07" (2/3) ... [2020-09-25 11:18:09,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:09, skipping insertion in model container [2020-09-25 11:18:09,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:09" (3/3) ... [2020-09-25 11:18:09,023 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label02.c [2020-09-25 11:18:09,035 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:09,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:09,064 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:09,100 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:09,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:09,101 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:09,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:09,101 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:09,101 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:09,102 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:09,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 11:18:09,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:09,148 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] [2020-09-25 11:18:09,148 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash 613515831, now seen corresponding path program 1 times [2020-09-25 11:18:09,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:09,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791069953] [2020-09-25 11:18:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:09,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:10,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 11:18:10,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:10,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-25 11:18:10,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:10,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:18:10,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:18:10,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:10,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:10,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:10,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:18:10,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:10,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:10,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:10,627 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 11:18:10,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791069953] [2020-09-25 11:18:10,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:10,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:10,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544589727] [2020-09-25 11:18:10,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:10,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:10,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:10,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:10,672 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:18:12,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:12,857 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 11:18:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:12,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-09-25 11:18:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:12,887 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 11:18:12,887 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 11:18:12,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 11:18:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 11:18:12,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 11:18:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 11:18:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 11:18:12,997 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 78 [2020-09-25 11:18:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:12,998 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 11:18:12,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:12,999 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 11:18:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 11:18:13,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:13,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:13,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:13,008 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:13,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:13,009 INFO L82 PathProgramCache]: Analyzing trace with hash 970656551, now seen corresponding path program 1 times [2020-09-25 11:18:13,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:13,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589040039] [2020-09-25 11:18:13,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:13,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:13,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:14,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:18,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 11:18:18,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:18:18,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:18,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 11:18:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:18,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:18,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:18,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:18,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:18,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:18:18,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:18,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:18,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:18,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:18,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:18:18,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:18,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 11:18:18,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:18,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:18:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:18,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589040039] [2020-09-25 11:18:18,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:18,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:18,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903670841] [2020-09-25 11:18:18,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:18,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:18,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:18,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:18,542 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 11:18:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:20,152 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 11:18:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:20,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 11:18:20,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:20,159 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 11:18:20,159 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 11:18:20,162 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 11:18:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 11:18:20,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 11:18:20,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:18:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 11:18:20,197 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 157 [2020-09-25 11:18:20,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:20,198 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 11:18:20,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 11:18:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 11:18:20,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:20,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:20,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:20,204 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:20,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1315129595, now seen corresponding path program 1 times [2020-09-25 11:18:20,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:20,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951404384] [2020-09-25 11:18:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 11:18:25,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:18:25,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:18:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:18:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 11:18:25,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:18:25,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:25,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:25,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:25,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:18:25,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:25,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:25,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:25,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 11:18:25,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:18:25,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:25,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951404384] [2020-09-25 11:18:25,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:25,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:18:25,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395039975] [2020-09-25 11:18:25,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:18:25,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:25,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:18:25,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:18:25,797 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 11 states. [2020-09-25 11:18:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:28,211 INFO L93 Difference]: Finished difference Result 1614 states and 2050 transitions. [2020-09-25 11:18:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:18:28,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-09-25 11:18:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:28,218 INFO L225 Difference]: With dead ends: 1614 [2020-09-25 11:18:28,219 INFO L226 Difference]: Without dead ends: 1015 [2020-09-25 11:18:28,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:18:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-09-25 11:18:28,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 995. [2020-09-25 11:18:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 11:18:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1212 transitions. [2020-09-25 11:18:28,258 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1212 transitions. Word has length 167 [2020-09-25 11:18:28,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:28,259 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1212 transitions. [2020-09-25 11:18:28,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:18:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1212 transitions. [2020-09-25 11:18:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 11:18:28,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:28,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:28,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:28,265 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:28,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:28,265 INFO L82 PathProgramCache]: Analyzing trace with hash -8332915, now seen corresponding path program 1 times [2020-09-25 11:18:28,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:28,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778231507] [2020-09-25 11:18:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:28,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:30,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 11:18:30,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:18:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2325 [2020-09-25 11:18:30,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:30,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 11:18:30,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:30,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:30,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:30,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:30,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:30,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:18:30,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:30,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:30,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:30,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:30,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:30,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 11:18:30,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:30,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 11:18:30,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:30,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:18:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:31,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778231507] [2020-09-25 11:18:31,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:31,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:18:31,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072934909] [2020-09-25 11:18:31,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:18:31,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:31,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:18:31,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:31,196 INFO L87 Difference]: Start difference. First operand 995 states and 1212 transitions. Second operand 8 states. [2020-09-25 11:18:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:34,351 INFO L93 Difference]: Finished difference Result 2376 states and 2949 transitions. [2020-09-25 11:18:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:18:34,352 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 11:18:34,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:34,362 INFO L225 Difference]: With dead ends: 2376 [2020-09-25 11:18:34,362 INFO L226 Difference]: Without dead ends: 1546 [2020-09-25 11:18:34,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:18:34,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-09-25 11:18:34,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1505. [2020-09-25 11:18:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2020-09-25 11:18:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1792 transitions. [2020-09-25 11:18:34,452 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1792 transitions. Word has length 169 [2020-09-25 11:18:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:34,453 INFO L479 AbstractCegarLoop]: Abstraction has 1505 states and 1792 transitions. [2020-09-25 11:18:34,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:18:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1792 transitions. [2020-09-25 11:18:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 11:18:34,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:34,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:34,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:34,462 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:34,463 INFO L82 PathProgramCache]: Analyzing trace with hash 570322263, now seen corresponding path program 1 times [2020-09-25 11:18:34,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:34,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209906380] [2020-09-25 11:18:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:34,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:39,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 11:18:39,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:18:39,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:39,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:18:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 11:18:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:39,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:39,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:39,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:18:39,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:39,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:39,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:40,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:40,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:18:40,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-09-25 11:18:40,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:40,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:18:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:40,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209906380] [2020-09-25 11:18:40,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:40,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:40,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265173837] [2020-09-25 11:18:40,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:40,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:40,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:40,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:40,415 INFO L87 Difference]: Start difference. First operand 1505 states and 1792 transitions. Second operand 10 states. [2020-09-25 11:18:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:43,532 INFO L93 Difference]: Finished difference Result 3386 states and 4307 transitions. [2020-09-25 11:18:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:18:43,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 186 [2020-09-25 11:18:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:43,551 INFO L225 Difference]: With dead ends: 3386 [2020-09-25 11:18:43,552 INFO L226 Difference]: Without dead ends: 2491 [2020-09-25 11:18:43,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:18:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2020-09-25 11:18:43,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2305. [2020-09-25 11:18:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-25 11:18:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 2811 transitions. [2020-09-25 11:18:43,675 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 2811 transitions. Word has length 186 [2020-09-25 11:18:43,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:43,676 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 2811 transitions. [2020-09-25 11:18:43,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:18:43,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 2811 transitions. [2020-09-25 11:18:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 11:18:43,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:43,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:43,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:43,681 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:43,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:43,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1892330201, now seen corresponding path program 1 times [2020-09-25 11:18:43,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:43,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530271231] [2020-09-25 11:18:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:43,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:48,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 11:18:48,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:48,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 11:18:48,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:48,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:48,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:48,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:18:48,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 11:18:48,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:48,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:48,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:18:48,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:48,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:49,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:49,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:49,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:18:49,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:49,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-09-25 11:18:49,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:49,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:49,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 11:18:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:49,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530271231] [2020-09-25 11:18:49,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:49,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:49,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163523794] [2020-09-25 11:18:49,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:49,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:49,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:49,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:49,456 INFO L87 Difference]: Start difference. First operand 2305 states and 2811 transitions. Second operand 10 states. [2020-09-25 11:18:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:53,225 INFO L93 Difference]: Finished difference Result 4754 states and 5914 transitions. [2020-09-25 11:18:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:18:53,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-09-25 11:18:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:53,240 INFO L225 Difference]: With dead ends: 4754 [2020-09-25 11:18:53,241 INFO L226 Difference]: Without dead ends: 3073 [2020-09-25 11:18:53,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:18:53,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2020-09-25 11:18:53,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2904. [2020-09-25 11:18:53,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2904 states. [2020-09-25 11:18:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 3461 transitions. [2020-09-25 11:18:53,328 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 3461 transitions. Word has length 200 [2020-09-25 11:18:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:53,329 INFO L479 AbstractCegarLoop]: Abstraction has 2904 states and 3461 transitions. [2020-09-25 11:18:53,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:18:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 3461 transitions. [2020-09-25 11:18:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 11:18:53,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:53,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:53,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:18:53,335 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:53,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:53,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1660960126, now seen corresponding path program 1 times [2020-09-25 11:18:53,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:53,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115408272] [2020-09-25 11:18:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:53,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:53,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking...