/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:41,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:41,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:41,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:41,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:41,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:41,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:41,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:41,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:41,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:41,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:41,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:41,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:41,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:41,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:41,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:41,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:41,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:41,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:41,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:41,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:41,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:41,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:41,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:41,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:41,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:41,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:41,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:41,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:41,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:41,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:41,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:41,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:41,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:41,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:41,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:41,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:41,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:41,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:41,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:41,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:41,536 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 10:11:41,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:41,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:41,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:41,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:41,565 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:41,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:41,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:41,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:41,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:41,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:41,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:41,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:41,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:41,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:41,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:41,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:41,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:41,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:41,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:41,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:41,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:41,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:41,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:41,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:41,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:41,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:41,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:41,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:41,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:41,570 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:11:42,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:42,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:42,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:42,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:42,090 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:42,091 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 10:11:42,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdd46342c/ae258a8e15944e2daf2314e14f174b13/FLAG1de20743b [2020-09-25 10:11:42,835 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:42,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 10:11:42,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdd46342c/ae258a8e15944e2daf2314e14f174b13/FLAG1de20743b [2020-09-25 10:11:43,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdd46342c/ae258a8e15944e2daf2314e14f174b13 [2020-09-25 10:11:43,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:43,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:43,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:43,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:43,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:43,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:43" (1/1) ... [2020-09-25 10:11:43,141 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 10:11:43, skipping insertion in model container [2020-09-25 10:11:43,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:43" (1/1) ... [2020-09-25 10:11:43,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:43,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:43,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:43,752 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:43,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:44,024 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:44,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44 WrapperNode [2020-09-25 10:11:44,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:44,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:44,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:44,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:44,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:44,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:44,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:44,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:44,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (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 10:11:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:45,727 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:45,730 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:45,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:45 BoogieIcfgContainer [2020-09-25 10:11:45,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:45,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:45,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:45,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:45,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:43" (1/3) ... [2020-09-25 10:11:45,760 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 10:11:45, skipping insertion in model container [2020-09-25 10:11:45,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (2/3) ... [2020-09-25 10:11:45,761 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 10:11:45, skipping insertion in model container [2020-09-25 10:11:45,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:45" (3/3) ... [2020-09-25 10:11:45,766 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 10:11:45,781 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:45,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:45,821 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:45,866 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:45,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:45,868 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:45,868 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:45,868 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:45,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:45,868 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:45,868 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:11:45,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:45,919 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] [2020-09-25 10:11:45,920 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:45,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 10:11:45,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:45,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67031033] [2020-09-25 10:11:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:46,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:46,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:11:46,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:46,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-09-25 10:11:46,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:46,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:11:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:11:46,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:46,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:46,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:46,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:11:46,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:46,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:46,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:46,751 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 10:11:46,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67031033] [2020-09-25 10:11:46,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:46,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:11:46,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632677956] [2020-09-25 10:11:46,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:11:46,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:46,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:11:46,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:11:46,792 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:11:48,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:48,883 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 10:11:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:48,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 10:11:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:48,908 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 10:11:48,908 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 10:11:48,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 10:11:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 10:11:49,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 10:11:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 10:11:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 10:11:49,019 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 10:11:49,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:49,020 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 10:11:49,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:49,020 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 10:11:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 10:11:49,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:49,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:49,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:49,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:49,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 10:11:49,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:49,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282826566] [2020-09-25 10:11:49,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:49,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:49,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 10:11:50,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:11:50,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1538 [2020-09-25 10:11:50,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:11:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:50,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:50,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:50,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:11:50,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:11:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:50,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:11:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 10:11:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:11:50,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:51,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282826566] [2020-09-25 10:11:51,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:51,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:11:51,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440057624] [2020-09-25 10:11:51,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:11:51,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:51,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:11:51,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:51,078 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 10:11:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:53,331 INFO L93 Difference]: Finished difference Result 1423 states and 1832 transitions. [2020-09-25 10:11:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:11:53,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-09-25 10:11:53,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:53,338 INFO L225 Difference]: With dead ends: 1423 [2020-09-25 10:11:53,339 INFO L226 Difference]: Without dead ends: 895 [2020-09-25 10:11:53,342 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 10:11:53,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-09-25 10:11:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 857. [2020-09-25 10:11:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-09-25 10:11:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1029 transitions. [2020-09-25 10:11:53,411 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1029 transitions. Word has length 127 [2020-09-25 10:11:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:53,414 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1029 transitions. [2020-09-25 10:11:53,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:11:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1029 transitions. [2020-09-25 10:11:53,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 10:11:53,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:53,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:53,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:53,418 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:53,419 INFO L82 PathProgramCache]: Analyzing trace with hash 843318586, now seen corresponding path program 1 times [2020-09-25 10:11:53,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:53,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525863389] [2020-09-25 10:11:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:53,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:53,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:57,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:58,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 10:11:58,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:58,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4790 [2020-09-25 10:11:58,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:58,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 10:11:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:58,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:58,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:11:58,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:58,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:58,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:58,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:58,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 10:11:58,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:58,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:58,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525863389] [2020-09-25 10:11:58,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:58,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:58,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238474832] [2020-09-25 10:11:58,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:58,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:58,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:58,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:58,705 INFO L87 Difference]: Start difference. First operand 857 states and 1029 transitions. Second operand 8 states. [2020-09-25 10:12:02,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:02,447 INFO L93 Difference]: Finished difference Result 2954 states and 3752 transitions. [2020-09-25 10:12:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:02,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-09-25 10:12:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:02,464 INFO L225 Difference]: With dead ends: 2954 [2020-09-25 10:12:02,464 INFO L226 Difference]: Without dead ends: 2112 [2020-09-25 10:12:02,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2020-09-25 10:12:02,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1995. [2020-09-25 10:12:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-09-25 10:12:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2472 transitions. [2020-09-25 10:12:02,547 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2472 transitions. Word has length 136 [2020-09-25 10:12:02,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:02,548 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2472 transitions. [2020-09-25 10:12:02,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2472 transitions. [2020-09-25 10:12:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 10:12:02,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:02,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:02,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:02,553 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:02,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:02,554 INFO L82 PathProgramCache]: Analyzing trace with hash 350854071, now seen corresponding path program 1 times [2020-09-25 10:12:02,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:02,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710208938] [2020-09-25 10:12:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:02,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:02,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:07,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:07,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 10:12:07,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:07,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:12:07,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:07,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 10:12:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:07,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:07,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:07,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:07,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:07,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:12:07,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:07,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:07,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:07,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:08,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 10:12:08,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:08,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-09-25 10:12:08,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:08,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:08,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:08,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 10:12:08,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:08,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710208938] [2020-09-25 10:12:08,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:08,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:12:08,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754273904] [2020-09-25 10:12:08,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:12:08,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:08,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:12:08,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:12:08,508 INFO L87 Difference]: Start difference. First operand 1995 states and 2472 transitions. Second operand 9 states. [2020-09-25 10:12:10,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:10,667 INFO L93 Difference]: Finished difference Result 4015 states and 4990 transitions. [2020-09-25 10:12:10,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:12:10,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2020-09-25 10:12:10,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:10,683 INFO L225 Difference]: With dead ends: 4015 [2020-09-25 10:12:10,683 INFO L226 Difference]: Without dead ends: 2003 [2020-09-25 10:12:10,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:12:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2020-09-25 10:12:10,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1989. [2020-09-25 10:12:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2020-09-25 10:12:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2445 transitions. [2020-09-25 10:12:10,770 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2445 transitions. Word has length 174 [2020-09-25 10:12:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:10,772 INFO L479 AbstractCegarLoop]: Abstraction has 1989 states and 2445 transitions. [2020-09-25 10:12:10,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:12:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2445 transitions. [2020-09-25 10:12:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 10:12:10,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:10,778 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:12:10,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:10,778 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1483242834, now seen corresponding path program 1 times [2020-09-25 10:12:10,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:10,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600119565] [2020-09-25 10:12:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:11,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:14,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:14,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:15,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:15,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 10:12:15,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:12:15,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4224 [2020-09-25 10:12:15,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:15,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:15,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:12:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-09-25 10:12:15,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:15,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:15,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:15,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:12:15,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:15,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:15,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:15,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:15,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:15,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:15,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:15,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 10:12:15,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:15,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:12:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:15,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:15,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:15,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:15,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:12:15,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:15,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 10:12:15,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:15,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:12:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 50 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 10:12:15,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600119565] [2020-09-25 10:12:15,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:15,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:12:15,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383034460] [2020-09-25 10:12:15,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:12:15,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:15,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:12:15,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:15,795 INFO L87 Difference]: Start difference. First operand 1989 states and 2445 transitions. Second operand 8 states. [2020-09-25 10:12:19,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:19,641 INFO L93 Difference]: Finished difference Result 5187 states and 6607 transitions. [2020-09-25 10:12:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:12:19,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2020-09-25 10:12:19,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:19,667 INFO L225 Difference]: With dead ends: 5187 [2020-09-25 10:12:19,667 INFO L226 Difference]: Without dead ends: 3213 [2020-09-25 10:12:19,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:12:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2020-09-25 10:12:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3128. [2020-09-25 10:12:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3128 states. [2020-09-25 10:12:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 3908 transitions. [2020-09-25 10:12:19,803 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 3908 transitions. Word has length 206 [2020-09-25 10:12:19,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:19,803 INFO L479 AbstractCegarLoop]: Abstraction has 3128 states and 3908 transitions. [2020-09-25 10:12:19,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:19,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 3908 transitions. [2020-09-25 10:12:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 10:12:19,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:19,811 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:12:19,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:19,811 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:19,812 INFO L82 PathProgramCache]: Analyzing trace with hash -862349572, now seen corresponding path program 1 times [2020-09-25 10:12:19,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:19,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794564733] [2020-09-25 10:12:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:22,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:22,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:24,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 10:12:24,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:12:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:12:24,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:24,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:12:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 10:12:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:24,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:24,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:25,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:25,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:12:25,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:25,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:25,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:25,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:25,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:25,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 10:12:25,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:25,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:25,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:25,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:12:25,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:25,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 10:12:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:25,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:25,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:25,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 10:12:25,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:25,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:12:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:12:25,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794564733] [2020-09-25 10:12:25,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:25,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:12:25,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296476412] [2020-09-25 10:12:25,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:12:25,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:25,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:12:25,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:12:25,952 INFO L87 Difference]: Start difference. First operand 3128 states and 3908 transitions. Second operand 10 states.