/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/Problem02_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:03:29,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:03:29,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:03:29,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:03:29,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:03:29,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:03:29,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:03:29,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:03:29,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:03:29,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:03:29,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:03:29,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:03:29,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:03:29,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:03:29,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:03:29,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:03:29,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:03:29,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:03:29,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:03:29,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:03:29,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:03:29,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:03:29,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:03:29,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:03:29,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:03:29,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:03:29,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:03:29,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:03:29,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:03:29,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:03:29,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:03:29,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:03:29,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:03:29,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:03:29,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:03:29,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:03:29,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:03:29,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:03:29,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:03:29,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:03:29,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:03:29,820 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 09:03:29,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:03:29,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:03:29,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:03:29,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:03:29,871 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:03:29,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:03:29,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:03:29,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:03:29,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:03:29,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:03:29,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:03:29,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:03:29,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:03:29,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:03:29,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:03:29,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:03:29,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:03:29,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:03:29,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:03:29,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:03:29,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:03:29,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:03:29,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:03:29,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:03:29,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:03:29,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:03:29,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:03:29,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:03:29,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:03:29,878 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 09:03:30,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:03:30,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:03:30,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:03:30,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:03:30,339 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:03:30,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 09:03:30,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4effe00/8696964b54db4f849e3c28a970dc145e/FLAGfd5e33909 [2020-09-25 09:03:31,065 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:03:31,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 09:03:31,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4effe00/8696964b54db4f849e3c28a970dc145e/FLAGfd5e33909 [2020-09-25 09:03:31,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4effe00/8696964b54db4f849e3c28a970dc145e [2020-09-25 09:03:31,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:03:31,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:03:31,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:31,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:03:31,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:03:31,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:31" (1/1) ... [2020-09-25 09:03:31,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:31, skipping insertion in model container [2020-09-25 09:03:31,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:31" (1/1) ... [2020-09-25 09:03:31,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:03:31,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:03:31,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:31,871 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:03:32,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:32,214 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:03:32,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:32 WrapperNode [2020-09-25 09:03:32,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:32,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:03:32,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:03:32,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:03:32,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:32" (1/1) ... [2020-09-25 09:03:32,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:32" (1/1) ... [2020-09-25 09:03:32,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:32" (1/1) ... [2020-09-25 09:03:32,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:32" (1/1) ... [2020-09-25 09:03:32,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:32" (1/1) ... [2020-09-25 09:03:32,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:32" (1/1) ... [2020-09-25 09:03:32,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:32" (1/1) ... [2020-09-25 09:03:32,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:03:32,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:03:32,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:03:32,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:03:32,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:32" (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 09:03:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:03:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:03:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:03:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:03:32,409 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:03:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:03:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:03:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:03:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:03:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:03:32,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:03:33,772 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:03:33,772 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:03:33,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:33 BoogieIcfgContainer [2020-09-25 09:03:33,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:03:33,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:03:33,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:03:33,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:03:33,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:03:31" (1/3) ... [2020-09-25 09:03:33,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a625d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:33, skipping insertion in model container [2020-09-25 09:03:33,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:32" (2/3) ... [2020-09-25 09:03:33,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a625d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:33, skipping insertion in model container [2020-09-25 09:03:33,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:33" (3/3) ... [2020-09-25 09:03:33,795 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-09-25 09:03:33,807 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:03:33,825 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:03:33,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:03:33,897 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:03:33,897 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:03:33,897 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:03:33,898 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:03:33,898 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:03:33,898 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:03:33,898 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:03:33,898 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:03:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:03:33,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 09:03:33,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:33,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:33,956 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash -404902623, now seen corresponding path program 1 times [2020-09-25 09:03:33,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:33,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122265890] [2020-09-25 09:03:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:34,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:34,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:37,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:39,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 09:03:39,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:03:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 09:03:39,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:39,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:03:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 09:03:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:03:39,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:39,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:39,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:39,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 09:03:39,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:39,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:03:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:03:39,696 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 09:03:39,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122265890] [2020-09-25 09:03:39,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:39,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:03:39,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320954009] [2020-09-25 09:03:39,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:03:39,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:39,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:03:39,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:03:39,734 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:03:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:42,182 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 09:03:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:03:42,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-25 09:03:42,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:42,228 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 09:03:42,228 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 09:03:42,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:42,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 09:03:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 09:03:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 09:03:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 09:03:42,388 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 158 [2020-09-25 09:03:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:42,390 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 09:03:42,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:03:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 09:03:42,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 09:03:42,398 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:42,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:42,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:03:42,399 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:42,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:42,399 INFO L82 PathProgramCache]: Analyzing trace with hash 856620700, now seen corresponding path program 1 times [2020-09-25 09:03:42,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:42,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422680827] [2020-09-25 09:03:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:42,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:47,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 09:03:47,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:03:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:03:47,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:47,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:47,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:03:47,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:03:47,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 09:03:47,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:47,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:47,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:47,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:47,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:03:47,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:47,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:03:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:47,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:03:47,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:03:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 09:03:47,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:47,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:03:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:03:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:48,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422680827] [2020-09-25 09:03:48,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:48,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:03:48,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275847943] [2020-09-25 09:03:48,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:03:48,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:48,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:03:48,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:03:48,171 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 12 states. [2020-09-25 09:03:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:52,083 INFO L93 Difference]: Finished difference Result 1927 states and 2548 transitions. [2020-09-25 09:03:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:03:52,084 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 192 [2020-09-25 09:03:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:52,091 INFO L225 Difference]: With dead ends: 1927 [2020-09-25 09:03:52,092 INFO L226 Difference]: Without dead ends: 887 [2020-09-25 09:03:52,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:03:52,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-09-25 09:03:52,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 722. [2020-09-25 09:03:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-09-25 09:03:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 845 transitions. [2020-09-25 09:03:52,137 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 845 transitions. Word has length 192 [2020-09-25 09:03:52,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:52,138 INFO L479 AbstractCegarLoop]: Abstraction has 722 states and 845 transitions. [2020-09-25 09:03:52,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:03:52,138 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 845 transitions. [2020-09-25 09:03:52,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 09:03:52,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:52,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:52,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:03:52,143 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:52,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:52,143 INFO L82 PathProgramCache]: Analyzing trace with hash 564185116, now seen corresponding path program 1 times [2020-09-25 09:03:52,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:52,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118082254] [2020-09-25 09:03:52,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:52,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:52,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:53,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:55,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:55,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:57,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:57,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 09:03:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:03:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:03:57,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:57,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:57,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:03:57,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 09:03:57,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:03:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:57,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:57,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:57,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:57,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:03:57,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:57,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:57,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:57,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:57,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:03:57,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:57,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:57,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:57,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 09:03:57,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 09:03:57,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:57,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:03:57,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:57,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118082254] [2020-09-25 09:03:57,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:57,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:03:57,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175943600] [2020-09-25 09:03:57,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:03:57,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:57,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:03:57,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:57,496 INFO L87 Difference]: Start difference. First operand 722 states and 845 transitions. Second operand 7 states. [2020-09-25 09:03:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:59,871 INFO L93 Difference]: Finished difference Result 2072 states and 2491 transitions. [2020-09-25 09:03:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:03:59,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 09:03:59,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:59,881 INFO L225 Difference]: With dead ends: 2072 [2020-09-25 09:03:59,881 INFO L226 Difference]: Without dead ends: 1372 [2020-09-25 09:03:59,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:03:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2020-09-25 09:03:59,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1142. [2020-09-25 09:03:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-09-25 09:03:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1369 transitions. [2020-09-25 09:03:59,934 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1369 transitions. Word has length 193 [2020-09-25 09:03:59,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:59,935 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 1369 transitions. [2020-09-25 09:03:59,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:03:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1369 transitions. [2020-09-25 09:03:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 09:03:59,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:59,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:59,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:03:59,942 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:59,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:59,942 INFO L82 PathProgramCache]: Analyzing trace with hash 257301984, now seen corresponding path program 1 times [2020-09-25 09:03:59,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:59,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507734242] [2020-09-25 09:03:59,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:59,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:04,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:04,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 09:04:04,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:04:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:04:04,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:04,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:04:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 09:04:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 09:04:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:05,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:05,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:05,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:05,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:05,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:05,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:05,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:05,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:05,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:04:05,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:05,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 09:04:05,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:05,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:04:05,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:05,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507734242] [2020-09-25 09:04:05,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:05,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:04:05,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467796014] [2020-09-25 09:04:05,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:04:05,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:05,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:04:05,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:05,464 INFO L87 Difference]: Start difference. First operand 1142 states and 1369 transitions. Second operand 8 states. [2020-09-25 09:04:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:09,329 INFO L93 Difference]: Finished difference Result 3395 states and 4369 transitions. [2020-09-25 09:04:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:04:09,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-09-25 09:04:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:09,343 INFO L225 Difference]: With dead ends: 3395 [2020-09-25 09:04:09,344 INFO L226 Difference]: Without dead ends: 2164 [2020-09-25 09:04:09,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:04:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2020-09-25 09:04:09,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2109. [2020-09-25 09:04:09,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2020-09-25 09:04:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2514 transitions. [2020-09-25 09:04:09,432 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2514 transitions. Word has length 196 [2020-09-25 09:04:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:09,433 INFO L479 AbstractCegarLoop]: Abstraction has 2109 states and 2514 transitions. [2020-09-25 09:04:09,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:04:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2514 transitions. [2020-09-25 09:04:09,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 09:04:09,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:09,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:09,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:04:09,446 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:09,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:09,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1388580762, now seen corresponding path program 1 times [2020-09-25 09:04:09,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:09,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895577272] [2020-09-25 09:04:09,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:11,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:14,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 09:04:14,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:04:14,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 09:04:14,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:14,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:04:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 09:04:14,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:14,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:14,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:14,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:14,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:04:14,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:14,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:04:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:14,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:14,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 09:04:14,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 09:04:14,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:14,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:14,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:04:14,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:14,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895577272] [2020-09-25 09:04:14,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:14,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:04:14,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441909014] [2020-09-25 09:04:14,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:04:14,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:14,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:04:14,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:14,790 INFO L87 Difference]: Start difference. First operand 2109 states and 2514 transitions. Second operand 7 states. [2020-09-25 09:04:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:17,101 INFO L93 Difference]: Finished difference Result 6145 states and 7447 transitions. [2020-09-25 09:04:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:04:17,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 09:04:17,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:17,123 INFO L225 Difference]: With dead ends: 6145 [2020-09-25 09:04:17,123 INFO L226 Difference]: Without dead ends: 4057 [2020-09-25 09:04:17,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:04:17,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2020-09-25 09:04:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 3727. [2020-09-25 09:04:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3727 states. [2020-09-25 09:04:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 4525 transitions. [2020-09-25 09:04:17,244 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 4525 transitions. Word has length 203 [2020-09-25 09:04:17,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:17,244 INFO L479 AbstractCegarLoop]: Abstraction has 3727 states and 4525 transitions. [2020-09-25 09:04:17,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:04:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 4525 transitions. [2020-09-25 09:04:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 09:04:17,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:17,258 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:17,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:04:17,259 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:17,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:17,259 INFO L82 PathProgramCache]: Analyzing trace with hash -424052664, now seen corresponding path program 1 times [2020-09-25 09:04:17,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:17,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100822925] [2020-09-25 09:04:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:19,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 09:04:22,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-09-25 09:04:22,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 09:04:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 09:04:22,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:22,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:22,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:04:22,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:04:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:22,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:04:22,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:04:22,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:22,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:04:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:22,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 09:04:22,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 09:04:22,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:04:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 09:04:22,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100822925] [2020-09-25 09:04:22,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:22,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:04:22,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840859708] [2020-09-25 09:04:22,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:04:22,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:22,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:04:22,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:22,640 INFO L87 Difference]: Start difference. First operand 3727 states and 4525 transitions. Second operand 8 states.