/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=WIDESTAMONGSMALL --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/Problem10_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:38,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:38,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:38,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:38,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:38,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:38,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:38,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:38,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:38,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:38,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:38,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:38,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:38,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:38,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:38,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:38,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:38,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:38,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:38,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:38,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:38,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:38,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:38,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:38,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:38,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:38,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:38,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:38,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:38,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:38,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:38,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:38,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:38,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:38,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:38,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:38,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:38,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:38,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:38,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:38,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:38,612 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 05:38:38,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:38,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:38,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:38,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:38,670 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:38,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:38,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:38,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:38,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:38,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:38,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:38,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:38,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:38,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:38,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:38,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:38,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:38,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:38,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:38,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:38,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:38,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:38,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:38,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:38,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:38,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:38,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:38,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:38,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:38,678 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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:38:39,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:39,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:39,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:39,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:39,226 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:39,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 05:38:39,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f542a9858/239188615a7242d3bc8dffdf38e8b9ac/FLAG9aaae28cd [2020-09-25 05:38:39,937 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:39,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 05:38:39,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f542a9858/239188615a7242d3bc8dffdf38e8b9ac/FLAG9aaae28cd [2020-09-25 05:38:40,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f542a9858/239188615a7242d3bc8dffdf38e8b9ac [2020-09-25 05:38:40,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:40,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:40,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:40,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:40,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:40,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:40" (1/1) ... [2020-09-25 05:38:40,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:40, skipping insertion in model container [2020-09-25 05:38:40,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:40" (1/1) ... [2020-09-25 05:38:40,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:40,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:41,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:41,034 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:41,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:41,196 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:41,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:41 WrapperNode [2020-09-25 05:38:41,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:41,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:41,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:41,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:41,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:41" (1/1) ... [2020-09-25 05:38:41,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:41" (1/1) ... [2020-09-25 05:38:41,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:41" (1/1) ... [2020-09-25 05:38:41,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:41" (1/1) ... [2020-09-25 05:38:41,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:41" (1/1) ... [2020-09-25 05:38:41,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:41" (1/1) ... [2020-09-25 05:38:41,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:41" (1/1) ... [2020-09-25 05:38:41,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:41,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:41,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:41,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:41,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:41" (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 05:38:41,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:41,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:41,432 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:41,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:43,028 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:43,029 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:43,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:43 BoogieIcfgContainer [2020-09-25 05:38:43,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:43,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:43,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:43,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:43,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:40" (1/3) ... [2020-09-25 05:38:43,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314f253f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:43, skipping insertion in model container [2020-09-25 05:38:43,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:41" (2/3) ... [2020-09-25 05:38:43,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314f253f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:43, skipping insertion in model container [2020-09-25 05:38:43,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:43" (3/3) ... [2020-09-25 05:38:43,048 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-09-25 05:38:43,060 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:43,071 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:43,093 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:43,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:43,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:43,128 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:43,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:43,129 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:43,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:43,129 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:43,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 05:38:43,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:43,176 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] [2020-09-25 05:38:43,176 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:43,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1703669257, now seen corresponding path program 1 times [2020-09-25 05:38:43,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:43,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745462005] [2020-09-25 05:38:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:43,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:44,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 05:38:44,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:38:44,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-09-25 05:38:44,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:44,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:38:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 05:38:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:38:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:44,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:44,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:38:44,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:44,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:38:44,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:44,968 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 05:38:44,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745462005] [2020-09-25 05:38:44,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:44,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:38:44,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532408262] [2020-09-25 05:38:44,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:38:44,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:45,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:38:45,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:38:45,008 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:38:47,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:47,073 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 05:38:47,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:38:47,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 05:38:47,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:47,099 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 05:38:47,100 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 05:38:47,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 05:38:47,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 05:38:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 05:38:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 05:38:47,211 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 62 [2020-09-25 05:38:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:47,212 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 05:38:47,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:38:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 05:38:47,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 05:38:47,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:47,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:47,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:47,221 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:47,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:47,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1996719641, now seen corresponding path program 1 times [2020-09-25 05:38:47,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:47,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563288463] [2020-09-25 05:38:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 05:38:51,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4308 [2020-09-25 05:38:51,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:51,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:38:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 05:38:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:51,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:51,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:51,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:38:51,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:51,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:51,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:51,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:51,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:51,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:51,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:51,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 05:38:51,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:51,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:51,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:38:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:51,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563288463] [2020-09-25 05:38:51,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:51,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:51,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835616591] [2020-09-25 05:38:51,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:51,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:51,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:51,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:51,958 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 05:38:53,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:53,606 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 05:38:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:53,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 05:38:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:53,613 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 05:38:53,614 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 05:38:53,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 05:38:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 05:38:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 05:38:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 05:38:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 05:38:53,679 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 141 [2020-09-25 05:38:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:53,680 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 05:38:53,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 05:38:53,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 05:38:53,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:53,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:53,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:53,688 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:53,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:53,688 INFO L82 PathProgramCache]: Analyzing trace with hash -617946683, now seen corresponding path program 1 times [2020-09-25 05:38:53,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:53,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552018907] [2020-09-25 05:38:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:58,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:58,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 05:38:58,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:38:58,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:38:58,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:58,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:38:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:38:58,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:58,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:58,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:58,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:58,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:58,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:58,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:38:58,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:58,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:58,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:59,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:59,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:59,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 05:38:59,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:59,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:59,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:59,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:38:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:59,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552018907] [2020-09-25 05:38:59,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:59,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:59,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713825056] [2020-09-25 05:38:59,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:59,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:59,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:59,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:59,221 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 05:39:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:02,117 INFO L93 Difference]: Finished difference Result 1905 states and 2481 transitions. [2020-09-25 05:39:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:02,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-09-25 05:39:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:02,127 INFO L225 Difference]: With dead ends: 1905 [2020-09-25 05:39:02,128 INFO L226 Difference]: Without dead ends: 1375 [2020-09-25 05:39:02,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-09-25 05:39:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1319. [2020-09-25 05:39:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-09-25 05:39:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1695 transitions. [2020-09-25 05:39:02,174 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1695 transitions. Word has length 151 [2020-09-25 05:39:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:02,175 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1695 transitions. [2020-09-25 05:39:02,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:02,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1695 transitions. [2020-09-25 05:39:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 05:39:02,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:02,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:02,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:02,180 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:02,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:02,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1755229107, now seen corresponding path program 1 times [2020-09-25 05:39:02,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:02,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810414221] [2020-09-25 05:39:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:02,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:04,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:04,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 05:39:04,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:04,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2070 [2020-09-25 05:39:04,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:04,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 05:39:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:39:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:04,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:04,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:04,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:04,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:04,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:04,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:04,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:04,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:04,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:04,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:04,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:04,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:04,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:39:04,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 05:39:04,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:04,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:04,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:39:04,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:04,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810414221] [2020-09-25 05:39:04,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:04,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:04,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340705992] [2020-09-25 05:39:04,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:04,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:04,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:04,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:04,546 INFO L87 Difference]: Start difference. First operand 1319 states and 1695 transitions. Second operand 5 states. [2020-09-25 05:39:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:06,338 INFO L93 Difference]: Finished difference Result 3253 states and 4342 transitions. [2020-09-25 05:39:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:06,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 05:39:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:06,356 INFO L225 Difference]: With dead ends: 3253 [2020-09-25 05:39:06,356 INFO L226 Difference]: Without dead ends: 2099 [2020-09-25 05:39:06,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 05:39:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2020-09-25 05:39:06,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 1779. [2020-09-25 05:39:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2020-09-25 05:39:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2205 transitions. [2020-09-25 05:39:06,511 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2205 transitions. Word has length 153 [2020-09-25 05:39:06,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:06,513 INFO L479 AbstractCegarLoop]: Abstraction has 1779 states and 2205 transitions. [2020-09-25 05:39:06,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2205 transitions. [2020-09-25 05:39:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 05:39:06,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:06,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:06,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:06,532 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:06,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:06,533 INFO L82 PathProgramCache]: Analyzing trace with hash 100721030, now seen corresponding path program 1 times [2020-09-25 05:39:06,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:06,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009148461] [2020-09-25 05:39:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:06,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:07,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:10,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 05:39:10,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4320 [2020-09-25 05:39:10,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:10,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:39:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 05:39:10,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:11,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:11,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:11,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:11,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:39:11,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:11,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:39:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:11,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:39:11,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:11,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 05:39:11,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:11,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 05:39:11,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:11,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:39:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:11,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 05:39:11,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 05:39:11,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:11,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 05:39:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:11,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009148461] [2020-09-25 05:39:11,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:11,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:39:11,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897882730] [2020-09-25 05:39:11,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:39:11,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:11,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:39:11,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:11,653 INFO L87 Difference]: Start difference. First operand 1779 states and 2205 transitions. Second operand 8 states. [2020-09-25 05:39:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:14,937 INFO L93 Difference]: Finished difference Result 4557 states and 5938 transitions. [2020-09-25 05:39:14,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:39:14,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-09-25 05:39:14,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:14,956 INFO L225 Difference]: With dead ends: 4557 [2020-09-25 05:39:14,956 INFO L226 Difference]: Without dead ends: 2943 [2020-09-25 05:39:14,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:39:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-09-25 05:39:15,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 2892. [2020-09-25 05:39:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2892 states. [2020-09-25 05:39:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 3698 transitions. [2020-09-25 05:39:15,073 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 3698 transitions. Word has length 252 [2020-09-25 05:39:15,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:15,074 INFO L479 AbstractCegarLoop]: Abstraction has 2892 states and 3698 transitions. [2020-09-25 05:39:15,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:39:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 3698 transitions. [2020-09-25 05:39:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 05:39:15,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:15,082 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:15,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:15,083 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:15,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:15,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1455418807, now seen corresponding path program 1 times [2020-09-25 05:39:15,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:15,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239237188] [2020-09-25 05:39:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:15,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:16,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:16,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:20,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 05:39:20,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:39:20,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:20,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:39:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 05:39:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:20,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:20,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:20,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:20,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:20,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:20,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:20,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:20,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:20,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:20,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:20,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 05:39:20,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:20,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:20,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:20,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:39:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:20,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 05:39:20,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:20,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 05:39:20,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:20,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:20,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:20,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:20,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:39:20,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:20,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239237188] [2020-09-25 05:39:20,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:20,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:39:20,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618930030] [2020-09-25 05:39:20,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:39:20,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:20,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:39:20,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:20,725 INFO L87 Difference]: Start difference. First operand 2892 states and 3698 transitions. Second operand 7 states. [2020-09-25 05:39:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:23,351 INFO L93 Difference]: Finished difference Result 6643 states and 8853 transitions. [2020-09-25 05:39:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:39:23,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-09-25 05:39:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:23,369 INFO L225 Difference]: With dead ends: 6643 [2020-09-25 05:39:23,369 INFO L226 Difference]: Without dead ends: 2812 [2020-09-25 05:39:23,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:39:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2020-09-25 05:39:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 2724. [2020-09-25 05:39:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-09-25 05:39:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3421 transitions. [2020-09-25 05:39:23,459 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3421 transitions. Word has length 253 [2020-09-25 05:39:23,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:23,460 INFO L479 AbstractCegarLoop]: Abstraction has 2724 states and 3421 transitions. [2020-09-25 05:39:23,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:39:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3421 transitions. [2020-09-25 05:39:23,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-09-25 05:39:23,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:23,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:23,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:39:23,469 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:23,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:23,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1285871462, now seen corresponding path program 1 times [2020-09-25 05:39:23,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:23,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038194726] [2020-09-25 05:39:23,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:23,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:23,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking...