/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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:29,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:29,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:29,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:29,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:29,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:29,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:29,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:29,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:29,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:29,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:29,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:29,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:29,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:29,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:29,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:29,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:29,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:29,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:29,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:29,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:29,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:29,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:29,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:29,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:29,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:29,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:29,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:29,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:29,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:29,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:29,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:29,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:29,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:29,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:29,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:29,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:29,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:29,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:29,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:29,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:29,859 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 09:06:29,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:29,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:29,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:29,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:29,906 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:29,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:29,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:29,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:29,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:29,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:29,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:29,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:29,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:29,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:29,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:29,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:29,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:29,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:29,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:29,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:29,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:29,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:29,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:29,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:29,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:29,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:29,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:29,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:29,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:29,912 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 09:06:30,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:30,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:30,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:30,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:30,439 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:30,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 09:06:30,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4585688f9/3ea58b68c4df46b0b48202fc96761719/FLAG021a0ab37 [2020-09-25 09:06:31,164 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:31,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 09:06:31,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4585688f9/3ea58b68c4df46b0b48202fc96761719/FLAG021a0ab37 [2020-09-25 09:06:31,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4585688f9/3ea58b68c4df46b0b48202fc96761719 [2020-09-25 09:06:31,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:31,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:31,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:31,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:31,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:31,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:31" (1/1) ... [2020-09-25 09:06:31,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31, skipping insertion in model container [2020-09-25 09:06:31,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:31" (1/1) ... [2020-09-25 09:06:31,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:31,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:31,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:31,981 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:32,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:32,266 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:32,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:32 WrapperNode [2020-09-25 09:06:32,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:32,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:32,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:32,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:32,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:32" (1/1) ... [2020-09-25 09:06:32,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:32" (1/1) ... [2020-09-25 09:06:32,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:32" (1/1) ... [2020-09-25 09:06:32,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:32" (1/1) ... [2020-09-25 09:06:32,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:32" (1/1) ... [2020-09-25 09:06:32,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:32" (1/1) ... [2020-09-25 09:06:32,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:32" (1/1) ... [2020-09-25 09:06:32,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:32,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:32,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:32,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:32,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:32" (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 09:06:32,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:32,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:32,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:32,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:34,060 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:34,060 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:34,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:34 BoogieIcfgContainer [2020-09-25 09:06:34,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:34,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:34,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:34,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:34,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:31" (1/3) ... [2020-09-25 09:06:34,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:34, skipping insertion in model container [2020-09-25 09:06:34,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:32" (2/3) ... [2020-09-25 09:06:34,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:34, skipping insertion in model container [2020-09-25 09:06:34,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:34" (3/3) ... [2020-09-25 09:06:34,081 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label54.c [2020-09-25 09:06:34,091 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:34,102 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:34,124 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:34,160 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:34,160 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:34,160 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:34,160 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:34,161 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:34,161 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:34,161 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:34,161 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:34,192 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:06:34,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 09:06:34,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:34,207 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] [2020-09-25 09:06:34,207 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:34,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2126243537, now seen corresponding path program 1 times [2020-09-25 09:06:34,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:34,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67031033] [2020-09-25 09:06:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:34,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:35,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:35,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:06:35,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-09-25 09:06:35,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:35,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:06:35,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:06:35,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:06:35,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:35,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:35,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:35,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:06:35,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:35,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:35,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:35,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:06:35,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:35,881 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 09:06:35,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67031033] [2020-09-25 09:06:35,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:35,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:06:35,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338186515] [2020-09-25 09:06:35,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:06:35,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:35,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:06:35,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:06:35,921 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:06:37,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:37,901 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 09:06:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:06:37,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-09-25 09:06:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:37,936 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 09:06:37,936 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 09:06:37,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:37,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 09:06:38,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 09:06:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 09:06:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 09:06:38,041 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 81 [2020-09-25 09:06:38,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:38,042 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 09:06:38,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:06:38,042 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 09:06:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 09:06:38,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:38,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:38,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:38,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:38,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:38,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1687287808, now seen corresponding path program 1 times [2020-09-25 09:06:38,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:38,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032435693] [2020-09-25 09:06:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:38,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:43,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 09:06:43,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:06:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:06:43,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:43,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 09:06:43,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:43,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:43,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:43,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:06:43,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:43,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:43,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:43,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:43,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:43,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:43,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:43,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:43,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 09:06:43,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:43,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:43,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:43,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:06:43,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:06:43,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032435693] [2020-09-25 09:06:43,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:43,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:06:43,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914600419] [2020-09-25 09:06:43,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:06:43,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:43,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:06:43,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:43,721 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 09:06:45,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:45,487 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 09:06:45,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:06:45,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-25 09:06:45,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:45,496 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:06:45,497 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 09:06:45,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:45,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 09:06:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 09:06:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:06:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 09:06:45,534 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 160 [2020-09-25 09:06:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:45,536 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 09:06:45,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:45,536 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 09:06:45,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 09:06:45,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:45,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:45,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:45,548 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:45,548 INFO L82 PathProgramCache]: Analyzing trace with hash 935848482, now seen corresponding path program 1 times [2020-09-25 09:06:45,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:45,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034636560] [2020-09-25 09:06:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:50,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 09:06:50,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:06:50,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:50,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 09:06:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:50,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:50,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:50,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:50,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:06:50,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:50,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:50,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:50,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:50,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:50,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:50,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 09:06:50,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:50,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:50,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:50,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:06:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:50,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034636560] [2020-09-25 09:06:50,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:50,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:06:50,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648445885] [2020-09-25 09:06:50,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:06:50,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:50,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:06:50,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:50,858 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 5 states. [2020-09-25 09:06:52,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:52,912 INFO L93 Difference]: Finished difference Result 1553 states and 1986 transitions. [2020-09-25 09:06:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:06:52,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 09:06:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:52,920 INFO L225 Difference]: With dead ends: 1553 [2020-09-25 09:06:52,921 INFO L226 Difference]: Without dead ends: 1023 [2020-09-25 09:06:52,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-09-25 09:06:52,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1001. [2020-09-25 09:06:52,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-09-25 09:06:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1222 transitions. [2020-09-25 09:06:52,961 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1222 transitions. Word has length 170 [2020-09-25 09:06:52,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:52,961 INFO L479 AbstractCegarLoop]: Abstraction has 1001 states and 1222 transitions. [2020-09-25 09:06:52,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:06:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1222 transitions. [2020-09-25 09:06:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 09:06:52,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:52,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:06:52,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:52,966 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:52,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1528839770, now seen corresponding path program 1 times [2020-09-25 09:06:52,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:52,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285958400] [2020-09-25 09:06:52,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:53,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:55,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 09:06:55,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:55,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2843 [2020-09-25 09:06:55,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:55,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:55,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:55,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:06:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:06:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:55,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:55,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:55,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:55,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:55,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:06:55,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:55,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:06:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:55,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:55,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:56,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:06:56,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 09:06:56,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:56,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:06:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:56,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285958400] [2020-09-25 09:06:56,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:56,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:06:56,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838953635] [2020-09-25 09:06:56,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:56,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:56,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:56,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:56,414 INFO L87 Difference]: Start difference. First operand 1001 states and 1222 transitions. Second operand 7 states. [2020-09-25 09:06:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:58,916 INFO L93 Difference]: Finished difference Result 2191 states and 2778 transitions. [2020-09-25 09:06:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:06:58,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-09-25 09:06:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:58,925 INFO L225 Difference]: With dead ends: 2191 [2020-09-25 09:06:58,925 INFO L226 Difference]: Without dead ends: 1355 [2020-09-25 09:06:58,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:06:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-09-25 09:06:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1331. [2020-09-25 09:06:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-09-25 09:06:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1590 transitions. [2020-09-25 09:06:58,971 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1590 transitions. Word has length 172 [2020-09-25 09:06:58,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:58,972 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1590 transitions. [2020-09-25 09:06:58,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:58,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1590 transitions. [2020-09-25 09:06:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 09:06:58,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:58,978 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:06:58,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:58,978 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:58,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:58,979 INFO L82 PathProgramCache]: Analyzing trace with hash 620665156, now seen corresponding path program 1 times [2020-09-25 09:06:58,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:58,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180937028] [2020-09-25 09:06:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:59,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:04,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 09:07:04,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:07:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-09-25 09:07:04,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:04,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:04,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:04,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:07:04,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 09:07:04,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:07:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:04,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:04,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:07:04,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:04,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:07:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:07:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:07:04,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:07:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 09:07:04,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:04,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:07:04,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:04,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:07:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:05,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:05,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:07:05,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:05,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-09-25 09:07:05,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:05,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:07:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:07:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 09:07:05,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180937028] [2020-09-25 09:07:05,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:05,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:07:05,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619530890] [2020-09-25 09:07:05,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:07:05,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:05,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:07:05,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:07:05,329 INFO L87 Difference]: Start difference. First operand 1331 states and 1590 transitions. Second operand 10 states. [2020-09-25 09:07:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:08,951 INFO L93 Difference]: Finished difference Result 3468 states and 4442 transitions. [2020-09-25 09:07:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:07:08,954 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2020-09-25 09:07:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:08,967 INFO L225 Difference]: With dead ends: 3468 [2020-09-25 09:07:08,967 INFO L226 Difference]: Without dead ends: 2283 [2020-09-25 09:07:08,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:07:08,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2020-09-25 09:07:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2098. [2020-09-25 09:07:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2098 states. [2020-09-25 09:07:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2496 transitions. [2020-09-25 09:07:09,054 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2496 transitions. Word has length 253 [2020-09-25 09:07:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:09,054 INFO L479 AbstractCegarLoop]: Abstraction has 2098 states and 2496 transitions. [2020-09-25 09:07:09,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:07:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2496 transitions. [2020-09-25 09:07:09,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-25 09:07:09,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:09,062 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 09:07:09,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:07:09,062 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:09,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:09,063 INFO L82 PathProgramCache]: Analyzing trace with hash 420038777, now seen corresponding path program 1 times [2020-09-25 09:07:09,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:09,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090964336] [2020-09-25 09:07:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:09,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:11,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:14,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-25 09:07:14,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:07:14,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:07:14,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:14,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:14,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:07:14,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 09:07:14,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 09:07:14,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:14,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:14,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:14,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:14,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:07:14,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:14,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:14,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:14,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:14,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:14,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:07:14,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 09:07:14,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:14,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:07:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:07:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:14,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:07:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:14,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:14,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 09:07:14,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:14,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 09:07:14,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:14,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:07:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:14,780 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:14,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090964336] [2020-09-25 09:07:14,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:14,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:07:14,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794564733] [2020-09-25 09:07:14,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:14,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:14,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:14,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:14,783 INFO L87 Difference]: Start difference. First operand 2098 states and 2496 transitions. Second operand 8 states. [2020-09-25 09:07:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:18,084 INFO L93 Difference]: Finished difference Result 5630 states and 7066 transitions. [2020-09-25 09:07:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:07:18,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 258 [2020-09-25 09:07:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:18,109 INFO L225 Difference]: With dead ends: 5630 [2020-09-25 09:07:18,110 INFO L226 Difference]: Without dead ends: 3697 [2020-09-25 09:07:18,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:07:18,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2020-09-25 09:07:18,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3655. [2020-09-25 09:07:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3655 states. [2020-09-25 09:07:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 4461 transitions. [2020-09-25 09:07:18,212 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 4461 transitions. Word has length 258 [2020-09-25 09:07:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:18,213 INFO L479 AbstractCegarLoop]: Abstraction has 3655 states and 4461 transitions. [2020-09-25 09:07:18,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:07:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 4461 transitions. [2020-09-25 09:07:18,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-09-25 09:07:18,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:18,224 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:18,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:07:18,225 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:18,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:18,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1227977262, now seen corresponding path program 1 times [2020-09-25 09:07:18,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:18,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745632798] [2020-09-25 09:07:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:18,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking...