/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=1.0 --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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:23,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:23,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:23,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:23,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:23,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:23,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:23,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:23,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:23,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:23,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:23,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:23,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:23,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:23,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:23,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:23,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:23,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:23,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:23,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:23,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:23,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:23,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:23,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:23,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:23,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:23,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:23,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:23,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:23,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:23,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:23,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:23,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:23,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:23,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:23,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:23,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:23,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:23,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:23,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:23,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:23,747 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 09:06:23,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:23,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:23,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:23,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:23,774 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:23,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:23,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:23,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:23,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:23,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:23,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:23,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:23,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:23,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:23,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:23,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:23,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:23,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:23,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:23,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:23,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:23,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:23,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:23,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:23,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:23,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:23,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:23,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:23,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:23,779 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:06:24,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:24,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:24,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:24,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:24,302 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:24,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 09:06:24,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3b65b71c/effcfbf938104fb8a3c881a591152e69/FLAG59dfabce2 [2020-09-25 09:06:25,062 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:25,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 09:06:25,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3b65b71c/effcfbf938104fb8a3c881a591152e69/FLAG59dfabce2 [2020-09-25 09:06:25,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3b65b71c/effcfbf938104fb8a3c881a591152e69 [2020-09-25 09:06:25,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:25,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:25,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:25,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:25,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:25,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:25" (1/1) ... [2020-09-25 09:06:25,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:25, skipping insertion in model container [2020-09-25 09:06:25,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:25" (1/1) ... [2020-09-25 09:06:25,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:25,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:25,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:25,946 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:26,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:26,220 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:26,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:26 WrapperNode [2020-09-25 09:06:26,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:26,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:26,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:26,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:26,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:26" (1/1) ... [2020-09-25 09:06:26,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:26" (1/1) ... [2020-09-25 09:06:26,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:26" (1/1) ... [2020-09-25 09:06:26,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:26" (1/1) ... [2020-09-25 09:06:26,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:26" (1/1) ... [2020-09-25 09:06:26,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:26" (1/1) ... [2020-09-25 09:06:26,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:26" (1/1) ... [2020-09-25 09:06:26,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:26,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:26,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:26,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:26,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:26" (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 09:06:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:27,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:27,946 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:27,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:27 BoogieIcfgContainer [2020-09-25 09:06:27,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:27,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:27,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:27,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:27,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:25" (1/3) ... [2020-09-25 09:06:27,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:27, skipping insertion in model container [2020-09-25 09:06:27,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:26" (2/3) ... [2020-09-25 09:06:27,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:27, skipping insertion in model container [2020-09-25 09:06:27,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:27" (3/3) ... [2020-09-25 09:06:27,965 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-25 09:06:27,978 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:27,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:28,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:28,052 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:28,052 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:28,052 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:28,052 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:28,053 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:28,053 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:28,053 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:28,053 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:28,086 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:06:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 09:06:28,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:28,100 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] [2020-09-25 09:06:28,100 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:28,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-25 09:06:28,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:28,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 09:06:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:29,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:06:29,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-09-25 09:06:29,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:29,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:29,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:06:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:06:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:06:29,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:29,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:29,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:06:29,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:29,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:06:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:29,617 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 09:06:29,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 09:06:29,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:29,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:06:29,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959856163] [2020-09-25 09:06:29,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:06:29,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:29,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:06:29,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:29,649 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 09:06:32,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:32,852 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 09:06:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:06:32,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 09:06:32,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:32,893 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 09:06:32,893 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 09:06:32,903 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 09:06:32,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 09:06:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 09:06:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 09:06:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 09:06:33,025 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-25 09:06:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:33,026 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 09:06:33,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:06:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 09:06:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 09:06:33,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:33,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:33,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:33,036 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:33,037 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-25 09:06:33,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:33,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024450105] [2020-09-25 09:06:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:34,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:36,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 09:06:36,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3316 [2020-09-25 09:06:36,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:36,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 09:06:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:36,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:36,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:36,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:36,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:06:36,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:36,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:36,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:36,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:36,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:36,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 09:06:36,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:36,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:36,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:06:36,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:06:37,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024450105] [2020-09-25 09:06:37,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:37,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:06:37,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621819132] [2020-09-25 09:06:37,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:37,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:37,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:37,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:37,062 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 7 states. [2020-09-25 09:06:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:39,420 INFO L93 Difference]: Finished difference Result 2068 states and 2799 transitions. [2020-09-25 09:06:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:06:39,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 09:06:39,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:39,435 INFO L225 Difference]: With dead ends: 2068 [2020-09-25 09:06:39,436 INFO L226 Difference]: Without dead ends: 1345 [2020-09-25 09:06:39,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:39,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-09-25 09:06:39,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1195. [2020-09-25 09:06:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2020-09-25 09:06:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1581 transitions. [2020-09-25 09:06:39,517 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1581 transitions. Word has length 148 [2020-09-25 09:06:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:39,519 INFO L479 AbstractCegarLoop]: Abstraction has 1195 states and 1581 transitions. [2020-09-25 09:06:39,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1581 transitions. [2020-09-25 09:06:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 09:06:39,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:39,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:39,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:39,534 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:39,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1018487757, now seen corresponding path program 1 times [2020-09-25 09:06:39,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:39,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262970537] [2020-09-25 09:06:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:39,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:40,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:41,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:44,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:44,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 09:06:44,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 09:06:44,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:44,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:06:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-25 09:06:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:44,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:45,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:45,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:45,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:45,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:06:45,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:45,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:45,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:45,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:45,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:45,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:45,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 09:06:45,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 09:06:45,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:45,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:06:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:45,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262970537] [2020-09-25 09:06:45,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:45,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:06:45,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389780043] [2020-09-25 09:06:45,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:06:45,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:45,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:06:45,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:06:45,746 INFO L87 Difference]: Start difference. First operand 1195 states and 1581 transitions. Second operand 12 states. [2020-09-25 09:06:48,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:48,288 INFO L93 Difference]: Finished difference Result 2902 states and 3986 transitions. [2020-09-25 09:06:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:48,289 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 215 [2020-09-25 09:06:48,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:48,301 INFO L225 Difference]: With dead ends: 2902 [2020-09-25 09:06:48,301 INFO L226 Difference]: Without dead ends: 1799 [2020-09-25 09:06:48,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:06:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2020-09-25 09:06:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1487. [2020-09-25 09:06:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-09-25 09:06:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1902 transitions. [2020-09-25 09:06:48,367 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1902 transitions. Word has length 215 [2020-09-25 09:06:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:48,373 INFO L479 AbstractCegarLoop]: Abstraction has 1487 states and 1902 transitions. [2020-09-25 09:06:48,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:06:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1902 transitions. [2020-09-25 09:06:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 09:06:48,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:48,381 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, 2, 2, 2, 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] [2020-09-25 09:06:48,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:48,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:48,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:48,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1694621717, now seen corresponding path program 1 times [2020-09-25 09:06:48,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:48,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331687529] [2020-09-25 09:06:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:49,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:53,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 09:06:53,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:53,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:06:53,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:53,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-09-25 09:06:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:53,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:53,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:53,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:06:53,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:53,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:53,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:53,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:53,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:53,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 09:06:53,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:53,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:53,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:53,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:53,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:53,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:53,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 09:06:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:53,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:54,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:54,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:54,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 09:06:54,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:54,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-25 09:06:54,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:54,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:06:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-25 09:06:54,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331687529] [2020-09-25 09:06:54,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:54,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:54,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983032322] [2020-09-25 09:06:54,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:54,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:54,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:54,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:54,618 INFO L87 Difference]: Start difference. First operand 1487 states and 1902 transitions. Second operand 10 states. [2020-09-25 09:06:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:58,255 INFO L93 Difference]: Finished difference Result 3633 states and 4830 transitions. [2020-09-25 09:06:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:58,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 244 [2020-09-25 09:06:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:58,268 INFO L225 Difference]: With dead ends: 3633 [2020-09-25 09:06:58,268 INFO L226 Difference]: Without dead ends: 2288 [2020-09-25 09:06:58,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:06:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2020-09-25 09:06:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2097. [2020-09-25 09:06:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2097 states. [2020-09-25 09:06:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2623 transitions. [2020-09-25 09:06:58,336 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2623 transitions. Word has length 244 [2020-09-25 09:06:58,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:58,336 INFO L479 AbstractCegarLoop]: Abstraction has 2097 states and 2623 transitions. [2020-09-25 09:06:58,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:58,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2623 transitions. [2020-09-25 09:06:58,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 09:06:58,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:58,344 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:58,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:58,345 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:58,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1711256871, now seen corresponding path program 1 times [2020-09-25 09:06:58,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:58,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635806410] [2020-09-25 09:06:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:58,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:01,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:03,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 09:07:03,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:07:03,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:07:03,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:03,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:03,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:07:03,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:07:03,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:07:03,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:03,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:03,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:03,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:03,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:03,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:07:03,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:03,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:07:03,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:03,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:03,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:03,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:07:03,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 09:07:03,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:03,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:07:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 09:07:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:03,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:03,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:07:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 09:07:03,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:03,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 09:07:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 106 proven. 74 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:07:03,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635806410] [2020-09-25 09:07:03,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:03,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:07:03,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260417232] [2020-09-25 09:07:03,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:03,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:03,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:03,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:03,883 INFO L87 Difference]: Start difference. First operand 2097 states and 2623 transitions. Second operand 8 states. [2020-09-25 09:07:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:06,929 INFO L93 Difference]: Finished difference Result 5760 states and 7790 transitions. [2020-09-25 09:07:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:07:06,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-09-25 09:07:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:06,951 INFO L225 Difference]: With dead ends: 5760 [2020-09-25 09:07:06,951 INFO L226 Difference]: Without dead ends: 3828 [2020-09-25 09:07:06,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 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 09:07:06,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2020-09-25 09:07:07,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 3646. [2020-09-25 09:07:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3646 states. [2020-09-25 09:07:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 4642 transitions. [2020-09-25 09:07:07,063 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 4642 transitions. Word has length 249 [2020-09-25 09:07:07,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:07,064 INFO L479 AbstractCegarLoop]: Abstraction has 3646 states and 4642 transitions. [2020-09-25 09:07:07,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:07:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 4642 transitions. [2020-09-25 09:07:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-25 09:07:07,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:07,074 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:07:07,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:07:07,074 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:07,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:07,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1521249918, now seen corresponding path program 1 times [2020-09-25 09:07:07,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:07,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497855441] [2020-09-25 09:07:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:07,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:09,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:12,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-09-25 09:07:12,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:07:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 09:07:12,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:12,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:07:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:07:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:07:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:12,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:12,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:12,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:12,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:12,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:07:12,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:12,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:12,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:12,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:07:12,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 09:07:12,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:12,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:12,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:07:12,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:12,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:07:12,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:12,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:07:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:12,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:12,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 09:07:12,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 09:07:12,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:12,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:07:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:12,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497855441] [2020-09-25 09:07:12,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:12,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:07:12,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188489001] [2020-09-25 09:07:12,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:12,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:12,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:12,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:12,727 INFO L87 Difference]: Start difference. First operand 3646 states and 4642 transitions. Second operand 8 states.