/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:36,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:36,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:36,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:36,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:36,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:36,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:36,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:36,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:36,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:36,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:36,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:36,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:36,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:36,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:36,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:36,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:36,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:36,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:36,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:36,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:36,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:36,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:36,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:36,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:36,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:36,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:36,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:36,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:36,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:36,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:36,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:36,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:36,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:36,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:36,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:36,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:36,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:36,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:36,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:36,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:36,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:32:36,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:36,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:36,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:36,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:36,231 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:36,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:36,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:36,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:36,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:36,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:36,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:36,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:36,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:36,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:36,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:36,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:36,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:36,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:36,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:36,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:36,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:36,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:36,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:36,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:36,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:36,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:36,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:36,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:36,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:36,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:32:36,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:36,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:36,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:36,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:36,818 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:36,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 13:32:36,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4f1702f/727c978cf7514a57a52c17e28133d91c/FLAGb22ac4450 [2020-09-25 13:32:37,586 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:37,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 13:32:37,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4f1702f/727c978cf7514a57a52c17e28133d91c/FLAGb22ac4450 [2020-09-25 13:32:37,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4f1702f/727c978cf7514a57a52c17e28133d91c [2020-09-25 13:32:37,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:37,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:37,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:37,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:37,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:37,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:37,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37, skipping insertion in model container [2020-09-25 13:32:37,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:37,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:37,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:38,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:38,470 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:38,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:38,653 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:38,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38 WrapperNode [2020-09-25 13:32:38,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:38,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:38,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:38,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:38,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... [2020-09-25 13:32:38,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:38,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:38,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:38,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:38,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:38,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:38,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:38,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:38,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:40,406 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:40,406 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:40,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:40 BoogieIcfgContainer [2020-09-25 13:32:40,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:40,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:40,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:40,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:40,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:37" (1/3) ... [2020-09-25 13:32:40,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:40, skipping insertion in model container [2020-09-25 13:32:40,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:38" (2/3) ... [2020-09-25 13:32:40,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:40, skipping insertion in model container [2020-09-25 13:32:40,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:40" (3/3) ... [2020-09-25 13:32:40,426 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-09-25 13:32:40,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:40,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:40,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:40,511 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:40,511 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:40,511 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:40,512 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:40,512 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:40,512 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:40,512 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:40,512 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 13:32:40,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:40,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:40,570 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:40,579 INFO L82 PathProgramCache]: Analyzing trace with hash -87322735, now seen corresponding path program 1 times [2020-09-25 13:32:40,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:40,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 13:32:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:44,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:45,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 13:32:45,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:32:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:32:45,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:45,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:32:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 13:32:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:32:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:46,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:46,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:46,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:46,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:32:46,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:46,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:32:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:46,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 13:32:46,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:46,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:32:46,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599723289] [2020-09-25 13:32:46,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:32:46,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:46,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:32:46,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:32:46,263 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:32:49,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:49,143 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 13:32:49,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:32:49,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-25 13:32:49,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:49,208 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 13:32:49,208 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 13:32:49,224 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 13:32:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 13:32:49,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 13:32:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 13:32:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 13:32:49,422 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 138 [2020-09-25 13:32:49,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:49,423 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 13:32:49,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:32:49,423 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 13:32:49,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 13:32:49,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:49,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:49,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:49,440 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:49,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1688822794, now seen corresponding path program 1 times [2020-09-25 13:32:49,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:49,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605893500] [2020-09-25 13:32:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:50,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:51,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:53,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:54,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:54,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 13:32:54,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:32:54,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:32:54,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:54,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:32:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 13:32:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:32:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:54,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:54,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:54,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:54,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:32:54,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:54,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:32:54,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:54,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:54,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:54,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:32:54,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:32:54,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:54,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:32:54,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:54,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605893500] [2020-09-25 13:32:54,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:54,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:54,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491338962] [2020-09-25 13:32:54,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:54,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:54,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:54,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:54,858 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 13:32:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:57,047 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-25 13:32:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:57,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 13:32:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:57,055 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 13:32:57,055 INFO L226 Difference]: Without dead ends: 932 [2020-09-25 13:32:57,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:57,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-25 13:32:57,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-25 13:32:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-25 13:32:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-25 13:32:57,106 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 155 [2020-09-25 13:32:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:57,108 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-25 13:32:57,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:57,108 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-25 13:32:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 13:32:57,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:57,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:57,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:57,125 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:57,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1055258910, now seen corresponding path program 1 times [2020-09-25 13:32:57,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:57,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133346145] [2020-09-25 13:32:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:57,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:00,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:02,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 13:33:02,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:33:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:33:02,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:02,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:33:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 13:33:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 13:33:02,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:02,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:02,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:02,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:02,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:02,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:02,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:02,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:02,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:33:02,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:02,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:33:02,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:02,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:02,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:33:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:02,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:02,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:02,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:33:02,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:02,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:02,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:02,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:33:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:33:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:33:02,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133346145] [2020-09-25 13:33:02,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:02,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:02,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592679111] [2020-09-25 13:33:02,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:02,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:02,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:02,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:02,634 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 8 states. [2020-09-25 13:33:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:07,176 INFO L93 Difference]: Finished difference Result 2639 states and 3439 transitions. [2020-09-25 13:33:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:33:07,177 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2020-09-25 13:33:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:07,192 INFO L225 Difference]: With dead ends: 2639 [2020-09-25 13:33:07,192 INFO L226 Difference]: Without dead ends: 1540 [2020-09-25 13:33:07,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-09-25 13:33:07,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1522. [2020-09-25 13:33:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-25 13:33:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1817 transitions. [2020-09-25 13:33:07,254 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1817 transitions. Word has length 173 [2020-09-25 13:33:07,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:07,255 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 1817 transitions. [2020-09-25 13:33:07,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1817 transitions. [2020-09-25 13:33:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 13:33:07,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:07,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:07,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:07,262 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:07,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:07,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1139597150, now seen corresponding path program 1 times [2020-09-25 13:33:07,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:07,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680252658] [2020-09-25 13:33:07,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:07,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:07,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:12,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:12,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 13:33:12,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:33:12,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:12,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:33:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:33:12,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:12,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:12,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:12,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:12,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:12,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:12,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:12,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:12,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:33:12,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 13:33:12,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:12,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:33:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:12,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680252658] [2020-09-25 13:33:12,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:12,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:12,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007497185] [2020-09-25 13:33:12,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:12,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:12,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:12,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:12,651 INFO L87 Difference]: Start difference. First operand 1522 states and 1817 transitions. Second operand 5 states. [2020-09-25 13:33:15,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:15,355 INFO L93 Difference]: Finished difference Result 4036 states and 4952 transitions. [2020-09-25 13:33:15,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:15,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 13:33:15,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:15,380 INFO L225 Difference]: With dead ends: 4036 [2020-09-25 13:33:15,380 INFO L226 Difference]: Without dead ends: 2381 [2020-09-25 13:33:15,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-09-25 13:33:15,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2288. [2020-09-25 13:33:15,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2020-09-25 13:33:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 2744 transitions. [2020-09-25 13:33:15,458 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 2744 transitions. Word has length 180 [2020-09-25 13:33:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:15,459 INFO L479 AbstractCegarLoop]: Abstraction has 2288 states and 2744 transitions. [2020-09-25 13:33:15,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:15,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 2744 transitions. [2020-09-25 13:33:15,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 13:33:15,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:15,468 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:15,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:15,469 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:15,469 INFO L82 PathProgramCache]: Analyzing trace with hash -12213563, now seen corresponding path program 1 times [2020-09-25 13:33:15,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:15,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522164669] [2020-09-25 13:33:15,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:15,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:20,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 13:33:20,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:33:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:20,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:20,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 13:33:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 13:33:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:20,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:20,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:20,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:20,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:20,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:20,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:20,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:20,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:20,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:20,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:33:20,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:33:20,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:20,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:20,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:33:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:20,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:20,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:33:20,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:33:20,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:20,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:33:20,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 13:33:20,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522164669] [2020-09-25 13:33:20,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:20,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:20,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640626478] [2020-09-25 13:33:20,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:20,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:20,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:20,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:20,800 INFO L87 Difference]: Start difference. First operand 2288 states and 2744 transitions. Second operand 5 states. [2020-09-25 13:33:23,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:23,011 INFO L93 Difference]: Finished difference Result 5324 states and 6556 transitions. [2020-09-25 13:33:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:23,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 13:33:23,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:23,026 INFO L225 Difference]: With dead ends: 5324 [2020-09-25 13:33:23,027 INFO L226 Difference]: Without dead ends: 2223 [2020-09-25 13:33:23,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:23,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-09-25 13:33:23,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2213. [2020-09-25 13:33:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2020-09-25 13:33:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 2600 transitions. [2020-09-25 13:33:23,103 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 2600 transitions. Word has length 189 [2020-09-25 13:33:23,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:23,104 INFO L479 AbstractCegarLoop]: Abstraction has 2213 states and 2600 transitions. [2020-09-25 13:33:23,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 2600 transitions. [2020-09-25 13:33:23,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 13:33:23,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:23,114 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:23,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:33:23,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:23,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1840240252, now seen corresponding path program 1 times [2020-09-25 13:33:23,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:23,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381787864] [2020-09-25 13:33:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:25,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking...