/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:53,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:53,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:53,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:53,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:53,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:53,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:53,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:53,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:53,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:53,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:53,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:53,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:53,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:53,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:53,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:53,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:53,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:53,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:53,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:53,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:53,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:53,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:53,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:53,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:53,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:53,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:53,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:53,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:53,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:53,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:53,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:53,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:53,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:53,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:53,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:53,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:53,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:53,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:53,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:53,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:53,894 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 09:05:53,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:53,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:53,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:53,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:53,941 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:53,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:53,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:53,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:53,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:53,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:53,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:53,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:53,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:53,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:53,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:53,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:53,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:53,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:53,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:53,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:53,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:53,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:53,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:53,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:53,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:53,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:53,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:53,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:53,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:53,946 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 09:05:54,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:54,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:54,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:54,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:54,427 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:54,428 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 09:05:54,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68c7b0208/21e56afa2d8943e3a07e4b797c9c96a1/FLAG12d676811 [2020-09-25 09:05:55,218 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:55,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 09:05:55,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68c7b0208/21e56afa2d8943e3a07e4b797c9c96a1/FLAG12d676811 [2020-09-25 09:05:55,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68c7b0208/21e56afa2d8943e3a07e4b797c9c96a1 [2020-09-25 09:05:55,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:55,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:55,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:55,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:55,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:55,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:55" (1/1) ... [2020-09-25 09:05:55,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3699edcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:55, skipping insertion in model container [2020-09-25 09:05:55,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:55" (1/1) ... [2020-09-25 09:05:55,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:55,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:56,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:56,355 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:56,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:56,513 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:56,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56 WrapperNode [2020-09-25 09:05:56,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:56,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:56,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:56,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:56,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56" (1/1) ... [2020-09-25 09:05:56,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56" (1/1) ... [2020-09-25 09:05:56,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56" (1/1) ... [2020-09-25 09:05:56,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56" (1/1) ... [2020-09-25 09:05:56,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56" (1/1) ... [2020-09-25 09:05:56,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56" (1/1) ... [2020-09-25 09:05:56,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56" (1/1) ... [2020-09-25 09:05:56,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:56,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:56,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:56,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:56,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56" (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 09:05:56,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:56,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:56,715 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:56,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:56,715 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:56,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:56,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:56,717 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:56,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:58,190 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:58,191 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:58,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:58 BoogieIcfgContainer [2020-09-25 09:05:58,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:58,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:58,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:58,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:58,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:55" (1/3) ... [2020-09-25 09:05:58,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efce10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:58, skipping insertion in model container [2020-09-25 09:05:58,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56" (2/3) ... [2020-09-25 09:05:58,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efce10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:58, skipping insertion in model container [2020-09-25 09:05:58,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:58" (3/3) ... [2020-09-25 09:05:58,211 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-25 09:05:58,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:58,237 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:58,263 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:58,303 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:58,304 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:58,304 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:58,304 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:58,304 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:58,305 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:58,305 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:58,305 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:58,339 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 09:05:58,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:58,353 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] [2020-09-25 09:05:58,353 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:58,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:58,362 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-25 09:05:58,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:58,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992781444] [2020-09-25 09:05:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:59,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 09:05:59,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:05:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1212 [2020-09-25 09:05:59,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:59,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 09:05:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:05:59,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:59,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:00,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:06:00,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:06:00,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:00,028 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 09:06:00,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992781444] [2020-09-25 09:06:00,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:00,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:06:00,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526274731] [2020-09-25 09:06:00,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:06:00,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:00,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:06:00,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:06:00,060 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:06:02,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:02,175 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 09:06:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:06:02,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 09:06:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:02,202 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 09:06:02,202 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 09:06:02,215 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 09:06:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 09:06:02,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 09:06:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 09:06:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 09:06:02,322 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 73 [2020-09-25 09:06:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:02,323 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 09:06:02,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:06:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 09:06:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 09:06:02,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:02,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:02,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:02,337 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:02,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:02,337 INFO L82 PathProgramCache]: Analyzing trace with hash 975789152, now seen corresponding path program 1 times [2020-09-25 09:06:02,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:02,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114488053] [2020-09-25 09:06:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:07,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 09:06:07,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:06:07,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:06:07,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:07,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:07,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:07,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 09:06:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:07,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:07,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:07,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:07,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:06:07,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:07,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:07,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:07,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:07,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:07,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 09:06:07,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:07,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:07,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:07,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:06:07,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:06:07,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114488053] [2020-09-25 09:06:07,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:07,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:06:07,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311175915] [2020-09-25 09:06:07,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:07,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:07,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:07,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:07,989 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 7 states. [2020-09-25 09:06:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:10,387 INFO L93 Difference]: Finished difference Result 1378 states and 1768 transitions. [2020-09-25 09:06:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:06:10,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 09:06:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:10,396 INFO L225 Difference]: With dead ends: 1378 [2020-09-25 09:06:10,397 INFO L226 Difference]: Without dead ends: 849 [2020-09-25 09:06:10,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:10,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-09-25 09:06:10,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 847. [2020-09-25 09:06:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-09-25 09:06:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1084 transitions. [2020-09-25 09:06:10,438 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1084 transitions. Word has length 152 [2020-09-25 09:06:10,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:10,439 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1084 transitions. [2020-09-25 09:06:10,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1084 transitions. [2020-09-25 09:06:10,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 09:06:10,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:10,445 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, 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] [2020-09-25 09:06:10,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:10,445 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:10,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:10,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-25 09:06:10,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:10,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999991853] [2020-09-25 09:06:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:10,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:15,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 09:06:15,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:06:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:06:15,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:15,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:06:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 09:06:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:15,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:15,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:15,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:06:15,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:15,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:15,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:15,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:15,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:15,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:15,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 09:06:15,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:15,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:15,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999991853] [2020-09-25 09:06:15,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:15,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:06:15,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624367078] [2020-09-25 09:06:15,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:06:15,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:15,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:06:15,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:15,831 INFO L87 Difference]: Start difference. First operand 847 states and 1084 transitions. Second operand 6 states. [2020-09-25 09:06:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:18,976 INFO L93 Difference]: Finished difference Result 2517 states and 3455 transitions. [2020-09-25 09:06:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:06:18,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-25 09:06:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:18,993 INFO L225 Difference]: With dead ends: 2517 [2020-09-25 09:06:18,994 INFO L226 Difference]: Without dead ends: 1835 [2020-09-25 09:06:18,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-09-25 09:06:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1629. [2020-09-25 09:06:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-09-25 09:06:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2195 transitions. [2020-09-25 09:06:19,086 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2195 transitions. Word has length 162 [2020-09-25 09:06:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:19,089 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 2195 transitions. [2020-09-25 09:06:19,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2195 transitions. [2020-09-25 09:06:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 09:06:19,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:19,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:19,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:19,095 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:19,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1651977394, now seen corresponding path program 1 times [2020-09-25 09:06:19,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:19,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167184848] [2020-09-25 09:06:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:19,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:24,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 09:06:24,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 09:06:24,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:24,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:06:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 09:06:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:24,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:24,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:24,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:06:24,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:24,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:06:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:24,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 09:06:24,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:24,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 09:06:24,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:24,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:06:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:24,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167184848] [2020-09-25 09:06:24,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:24,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:06:24,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974383627] [2020-09-25 09:06:24,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:24,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:24,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:24,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:24,715 INFO L87 Difference]: Start difference. First operand 1629 states and 2195 transitions. Second operand 8 states. [2020-09-25 09:06:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:27,844 INFO L93 Difference]: Finished difference Result 4689 states and 6730 transitions. [2020-09-25 09:06:27,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:06:27,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2020-09-25 09:06:27,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:27,869 INFO L225 Difference]: With dead ends: 4689 [2020-09-25 09:06:27,869 INFO L226 Difference]: Without dead ends: 3225 [2020-09-25 09:06:27,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:06:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2020-09-25 09:06:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 2567. [2020-09-25 09:06:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2567 states. [2020-09-25 09:06:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 3456 transitions. [2020-09-25 09:06:28,016 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 3456 transitions. Word has length 181 [2020-09-25 09:06:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:28,017 INFO L479 AbstractCegarLoop]: Abstraction has 2567 states and 3456 transitions. [2020-09-25 09:06:28,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 3456 transitions. [2020-09-25 09:06:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 09:06:28,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:28,025 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, 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] [2020-09-25 09:06:28,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:28,025 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:28,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:28,026 INFO L82 PathProgramCache]: Analyzing trace with hash 383410675, now seen corresponding path program 1 times [2020-09-25 09:06:28,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:28,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534062531] [2020-09-25 09:06:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:28,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:33,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 09:06:33,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:33,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:06:33,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:33,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-09-25 09:06:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:33,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:33,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:06:33,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:33,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:33,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:33,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:33,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:33,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 09:06:33,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:33,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:33,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:33,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:33,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 09:06:33,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:06:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:33,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 09:06:33,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-25 09:06:33,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:33,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:06:33,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 09:06:34,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534062531] [2020-09-25 09:06:34,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:34,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:34,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263243195] [2020-09-25 09:06:34,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:34,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:34,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:34,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:34,051 INFO L87 Difference]: Start difference. First operand 2567 states and 3456 transitions. Second operand 10 states. [2020-09-25 09:06:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:37,766 INFO L93 Difference]: Finished difference Result 5944 states and 8309 transitions. [2020-09-25 09:06:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:37,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 244 [2020-09-25 09:06:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:37,788 INFO L225 Difference]: With dead ends: 5944 [2020-09-25 09:06:37,789 INFO L226 Difference]: Without dead ends: 3516 [2020-09-25 09:06:37,800 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 09:06:37,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2020-09-25 09:06:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 3333. [2020-09-25 09:06:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3333 states. [2020-09-25 09:06:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 4377 transitions. [2020-09-25 09:06:37,906 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 4377 transitions. Word has length 244 [2020-09-25 09:06:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:37,907 INFO L479 AbstractCegarLoop]: Abstraction has 3333 states and 4377 transitions. [2020-09-25 09:06:37,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 4377 transitions. [2020-09-25 09:06:37,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 09:06:37,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:37,914 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, 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] [2020-09-25 09:06:37,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:37,914 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:37,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:37,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1248338468, now seen corresponding path program 1 times [2020-09-25 09:06:37,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:37,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587848661] [2020-09-25 09:06:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking...