/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:18,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:18,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:18,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:18,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:18,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:18,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:18,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:18,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:18,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:18,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:18,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:18,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:18,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:18,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:18,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:18,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:18,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:18,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:18,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:18,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:18,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:18,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:18,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:18,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:18,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:18,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:18,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:18,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:18,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:18,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:18,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:18,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:18,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:18,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:18,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:18,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:18,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:18,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:18,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:18,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:18,751 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 04:29:18,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:18,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:18,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:18,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:18,806 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:18,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:18,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:18,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:18,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:18,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:18,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:18,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:18,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:18,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:18,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:18,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:18,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:18,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:18,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:18,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:18,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:18,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:18,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:18,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:18,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:18,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:18,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:18,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:18,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:18,814 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=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:29:19,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:19,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:19,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:19,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:19,364 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:19,365 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 04:29:19,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bcb05866/46a7f4e1b52c43f5939016c1533e6329/FLAG0c7f3ded6 [2020-09-25 04:29:20,161 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:20,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 04:29:20,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bcb05866/46a7f4e1b52c43f5939016c1533e6329/FLAG0c7f3ded6 [2020-09-25 04:29:20,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bcb05866/46a7f4e1b52c43f5939016c1533e6329 [2020-09-25 04:29:20,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:20,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:20,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:20,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:20,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:20,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:20" (1/1) ... [2020-09-25 04:29:20,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:20, skipping insertion in model container [2020-09-25 04:29:20,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:20" (1/1) ... [2020-09-25 04:29:20,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:20,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:21,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:21,191 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:21,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:21,375 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:21,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:21 WrapperNode [2020-09-25 04:29:21,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:21,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:21,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:21,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:21,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:21" (1/1) ... [2020-09-25 04:29:21,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:21" (1/1) ... [2020-09-25 04:29:21,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:21" (1/1) ... [2020-09-25 04:29:21,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:21" (1/1) ... [2020-09-25 04:29:21,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:21" (1/1) ... [2020-09-25 04:29:21,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:21" (1/1) ... [2020-09-25 04:29:21,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:21" (1/1) ... [2020-09-25 04:29:21,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:21,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:21,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:21,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:21,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:21" (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 04:29:21,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:21,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:21,576 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:21,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:21,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:21,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:21,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:21,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:29:23,312 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:29:23,312 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:29:23,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:23 BoogieIcfgContainer [2020-09-25 04:29:23,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:29:23,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:29:23,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:29:23,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:29:23,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:20" (1/3) ... [2020-09-25 04:29:23,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:23, skipping insertion in model container [2020-09-25 04:29:23,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:21" (2/3) ... [2020-09-25 04:29:23,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:23, skipping insertion in model container [2020-09-25 04:29:23,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:23" (3/3) ... [2020-09-25 04:29:23,332 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-25 04:29:23,343 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:29:23,355 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:29:23,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:29:23,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:29:23,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:29:23,418 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:29:23,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:29:23,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:29:23,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:29:23,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:29:23,419 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:29:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:29:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 04:29:23,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:23,464 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] [2020-09-25 04:29:23,465 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:23,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-25 04:29:23,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:23,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982380634] [2020-09-25 04:29:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:24,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:29:24,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:29:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-09-25 04:29:24,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:24,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:29:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:29:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:29:24,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:24,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:24,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:24,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:29:24,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:24,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:29:24,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:24,686 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 04:29:24,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982380634] [2020-09-25 04:29:24,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:24,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:29:24,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540311286] [2020-09-25 04:29:24,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:24,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:24,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:24,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:24,720 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 04:29:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:27,857 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 04:29:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:29:27,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-09-25 04:29:27,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:27,889 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 04:29:27,889 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 04:29:27,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 04:29:28,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 04:29:28,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 04:29:28,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 04:29:28,009 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 71 [2020-09-25 04:29:28,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:28,010 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 04:29:28,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 04:29:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 04:29:28,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:28,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:28,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:28,022 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:28,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:28,022 INFO L82 PathProgramCache]: Analyzing trace with hash 2032396842, now seen corresponding path program 1 times [2020-09-25 04:29:28,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:28,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106799188] [2020-09-25 04:29:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:29,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:33,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 04:29:33,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:29:33,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:33,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:29:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:29:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:33,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:33,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:33,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:33,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:33,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:29:33,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:33,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:33,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:33,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:29:33,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 04:29:33,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:33,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:29:33,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:33,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106799188] [2020-09-25 04:29:33,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:33,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:33,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370573147] [2020-09-25 04:29:33,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:33,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:33,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:33,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:33,421 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 5 states. [2020-09-25 04:29:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:35,327 INFO L93 Difference]: Finished difference Result 1742 states and 2233 transitions. [2020-09-25 04:29:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:35,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 04:29:35,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:35,337 INFO L225 Difference]: With dead ends: 1742 [2020-09-25 04:29:35,337 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 04:29:35,341 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 04:29:35,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 04:29:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1030. [2020-09-25 04:29:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-09-25 04:29:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1292 transitions. [2020-09-25 04:29:35,391 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1292 transitions. Word has length 154 [2020-09-25 04:29:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:35,392 INFO L479 AbstractCegarLoop]: Abstraction has 1030 states and 1292 transitions. [2020-09-25 04:29:35,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1292 transitions. [2020-09-25 04:29:35,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 04:29:35,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:35,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:35,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:35,403 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:35,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:35,404 INFO L82 PathProgramCache]: Analyzing trace with hash 659489306, now seen corresponding path program 1 times [2020-09-25 04:29:35,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:35,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967955388] [2020-09-25 04:29:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:35,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:40,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:40,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 04:29:40,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:29:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 04:29:40,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:40,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:29:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:29:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:40,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:40,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:40,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:40,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:40,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:29:40,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:40,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:40,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:40,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:40,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:29:40,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:40,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 04:29:40,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:40,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:40,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:40,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:29:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:40,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967955388] [2020-09-25 04:29:40,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:40,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:40,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933684023] [2020-09-25 04:29:40,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:40,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:40,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:40,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:40,783 INFO L87 Difference]: Start difference. First operand 1030 states and 1292 transitions. Second operand 5 states. [2020-09-25 04:29:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:42,669 INFO L93 Difference]: Finished difference Result 1336 states and 1748 transitions. [2020-09-25 04:29:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:42,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 04:29:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:42,679 INFO L225 Difference]: With dead ends: 1336 [2020-09-25 04:29:42,679 INFO L226 Difference]: Without dead ends: 1334 [2020-09-25 04:29:42,681 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 04:29:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-09-25 04:29:42,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1184. [2020-09-25 04:29:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1184 states. [2020-09-25 04:29:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1534 transitions. [2020-09-25 04:29:42,735 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1534 transitions. Word has length 160 [2020-09-25 04:29:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:42,737 INFO L479 AbstractCegarLoop]: Abstraction has 1184 states and 1534 transitions. [2020-09-25 04:29:42,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1534 transitions. [2020-09-25 04:29:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 04:29:42,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:42,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:42,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:29:42,750 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:42,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:42,750 INFO L82 PathProgramCache]: Analyzing trace with hash -677190618, now seen corresponding path program 1 times [2020-09-25 04:29:42,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:42,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440369738] [2020-09-25 04:29:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:44,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:47,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:47,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 04:29:47,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:29:47,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:29:47,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:47,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:29:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 04:29:47,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:47,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:47,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:47,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:47,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:47,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:29:47,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:47,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:29:47,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:47,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:47,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:48,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:48,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:29:48,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:48,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 04:29:48,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:48,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:29:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:48,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440369738] [2020-09-25 04:29:48,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:48,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:29:48,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423706938] [2020-09-25 04:29:48,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:29:48,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:48,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:29:48,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:48,432 INFO L87 Difference]: Start difference. First operand 1184 states and 1534 transitions. Second operand 8 states. [2020-09-25 04:29:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:51,659 INFO L93 Difference]: Finished difference Result 3347 states and 4627 transitions. [2020-09-25 04:29:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:29:51,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-09-25 04:29:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:51,676 INFO L225 Difference]: With dead ends: 3347 [2020-09-25 04:29:51,676 INFO L226 Difference]: Without dead ends: 2328 [2020-09-25 04:29:51,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:29:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2020-09-25 04:29:51,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2124. [2020-09-25 04:29:51,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2020-09-25 04:29:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2765 transitions. [2020-09-25 04:29:51,784 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2765 transitions. Word has length 179 [2020-09-25 04:29:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:51,785 INFO L479 AbstractCegarLoop]: Abstraction has 2124 states and 2765 transitions. [2020-09-25 04:29:51,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:29:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2765 transitions. [2020-09-25 04:29:51,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 04:29:51,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:51,794 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, 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] [2020-09-25 04:29:51,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:51,794 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:51,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1674500493, now seen corresponding path program 1 times [2020-09-25 04:29:51,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:51,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939767260] [2020-09-25 04:29:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:51,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:52,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:52,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:53,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:56,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:56,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 04:29:56,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:29:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 04:29:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:56,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:29:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:29:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:57,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:57,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:57,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:57,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:57,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:29:57,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:57,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:57,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:57,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:57,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:57,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:29:57,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 04:29:57,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:57,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:29:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:57,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:29:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:57,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:57,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:29:57,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:57,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 04:29:57,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:57,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:29:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:57,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939767260] [2020-09-25 04:29:57,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:57,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:29:57,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177755916] [2020-09-25 04:29:57,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:29:57,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:57,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:29:57,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:57,684 INFO L87 Difference]: Start difference. First operand 2124 states and 2765 transitions. Second operand 8 states. [2020-09-25 04:30:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:00,593 INFO L93 Difference]: Finished difference Result 5485 states and 7593 transitions. [2020-09-25 04:30:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:30:00,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-09-25 04:30:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:00,620 INFO L225 Difference]: With dead ends: 5485 [2020-09-25 04:30:00,620 INFO L226 Difference]: Without dead ends: 3526 [2020-09-25 04:30:00,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:30:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2020-09-25 04:30:00,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 3502. [2020-09-25 04:30:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3502 states. [2020-09-25 04:30:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 4691 transitions. [2020-09-25 04:30:00,747 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 4691 transitions. Word has length 252 [2020-09-25 04:30:00,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:00,747 INFO L479 AbstractCegarLoop]: Abstraction has 3502 states and 4691 transitions. [2020-09-25 04:30:00,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:30:00,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 4691 transitions. [2020-09-25 04:30:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 04:30:00,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:00,756 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:00,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:00,757 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:00,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:00,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1172462050, now seen corresponding path program 1 times [2020-09-25 04:30:00,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:00,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924132928] [2020-09-25 04:30:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking...