/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=0.4 --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:20,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:20,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:20,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:20,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:20,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:20,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:20,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:20,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:20,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:20,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:20,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:20,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:20,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:20,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:20,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:20,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:20,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:20,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:20,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:20,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:20,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:20,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:20,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:20,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:20,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:20,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:20,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:20,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:20,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:20,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:20,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:20,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:20,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:20,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:20,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:20,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:20,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:20,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:20,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:20,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:20,815 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 13:35:20,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:20,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:20,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:20,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:20,868 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:20,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:20,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:20,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:20,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:20,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:20,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:20,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:20,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:20,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:20,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:20,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:20,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:20,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:20,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:20,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:20,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:20,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:20,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:20,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:20,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:20,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:20,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:20,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:20,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:20,875 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:35:21,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:21,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:21,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:21,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:21,381 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:21,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 13:35:21,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5ad42ba1/8daad929443a49c0a6859c177ee29d73/FLAG734cc7a85 [2020-09-25 13:35:22,148 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:22,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 13:35:22,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5ad42ba1/8daad929443a49c0a6859c177ee29d73/FLAG734cc7a85 [2020-09-25 13:35:22,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5ad42ba1/8daad929443a49c0a6859c177ee29d73 [2020-09-25 13:35:22,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:22,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:22,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:22,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:22,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:22,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:22" (1/1) ... [2020-09-25 13:35:22,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:22, skipping insertion in model container [2020-09-25 13:35:22,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:22" (1/1) ... [2020-09-25 13:35:22,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:22,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:22,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:22,922 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:23,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:23,172 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:23,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:23 WrapperNode [2020-09-25 13:35:23,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:23,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:23,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:23,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:23,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:23" (1/1) ... [2020-09-25 13:35:23,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:23" (1/1) ... [2020-09-25 13:35:23,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:23" (1/1) ... [2020-09-25 13:35:23,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:23" (1/1) ... [2020-09-25 13:35:23,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:23" (1/1) ... [2020-09-25 13:35:23,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:23" (1/1) ... [2020-09-25 13:35:23,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:23" (1/1) ... [2020-09-25 13:35:23,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:23,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:23,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:23,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:23,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:23" (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 13:35:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:24,967 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:24,967 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:24,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:24 BoogieIcfgContainer [2020-09-25 13:35:24,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:24,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:24,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:24,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:24,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:22" (1/3) ... [2020-09-25 13:35:24,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:24, skipping insertion in model container [2020-09-25 13:35:24,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:23" (2/3) ... [2020-09-25 13:35:24,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:24, skipping insertion in model container [2020-09-25 13:35:24,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:24" (3/3) ... [2020-09-25 13:35:24,999 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-09-25 13:35:25,012 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:25,027 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:25,052 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:25,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:25,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:25,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:25,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:25,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:25,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:25,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:25,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:35:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 13:35:25,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:25,134 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] [2020-09-25 13:35:25,134 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:25,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:25,143 INFO L82 PathProgramCache]: Analyzing trace with hash -193504545, now seen corresponding path program 1 times [2020-09-25 13:35:25,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:25,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 13:35:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:26,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:26,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 13:35:26,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:26,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1479 [2020-09-25 13:35:26,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:26,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:26,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 13:35:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:35:26,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:27,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:27,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:35:27,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:27,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:27,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:27,070 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 13:35:27,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 13:35:27,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:27,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:35:27,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905807043] [2020-09-25 13:35:27,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:35:27,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:27,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:35:27,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:27,107 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 13:35:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:30,117 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 13:35:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:35:30,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-09-25 13:35:30,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:30,146 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 13:35:30,146 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 13:35:30,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:30,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 13:35:30,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 13:35:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 13:35:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 13:35:30,287 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 61 [2020-09-25 13:35:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:30,288 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 13:35:30,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:35:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 13:35:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 13:35:30,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:30,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:30,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:30,301 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:30,302 INFO L82 PathProgramCache]: Analyzing trace with hash 75508103, now seen corresponding path program 1 times [2020-09-25 13:35:30,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:30,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880409717] [2020-09-25 13:35:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:35,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 13:35:35,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:35,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:35:35,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:35,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:35:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:35,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:35,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:35,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:35,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:35:35,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:35,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:35,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:35,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:35:35,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:35,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 13:35:35,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:35,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:35:35,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:35,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880409717] [2020-09-25 13:35:35,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:35,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:35,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891204261] [2020-09-25 13:35:35,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:35,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:35,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:35,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:35,909 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 13:35:37,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:37,991 INFO L93 Difference]: Finished difference Result 1549 states and 2116 transitions. [2020-09-25 13:35:37,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:35:37,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-25 13:35:37,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:37,999 INFO L225 Difference]: With dead ends: 1549 [2020-09-25 13:35:37,999 INFO L226 Difference]: Without dead ends: 869 [2020-09-25 13:35:38,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:38,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-09-25 13:35:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 701. [2020-09-25 13:35:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-09-25 13:35:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 910 transitions. [2020-09-25 13:35:38,043 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 910 transitions. Word has length 144 [2020-09-25 13:35:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:38,044 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 910 transitions. [2020-09-25 13:35:38,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:38,044 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 910 transitions. [2020-09-25 13:35:38,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 13:35:38,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:38,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:38,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:38,049 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:38,049 INFO L82 PathProgramCache]: Analyzing trace with hash 118153746, now seen corresponding path program 1 times [2020-09-25 13:35:38,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:38,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584164697] [2020-09-25 13:35:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:38,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 13:35:42,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4164 [2020-09-25 13:35:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 13:35:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:42,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:35:42,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:42,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:42,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 13:35:42,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:42,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:42,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584164697] [2020-09-25 13:35:42,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:42,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:42,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410051972] [2020-09-25 13:35:42,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:42,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:42,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:42,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:42,667 INFO L87 Difference]: Start difference. First operand 701 states and 910 transitions. Second operand 8 states. [2020-09-25 13:35:46,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:46,022 INFO L93 Difference]: Finished difference Result 2125 states and 2901 transitions. [2020-09-25 13:35:46,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:46,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2020-09-25 13:35:46,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:46,042 INFO L225 Difference]: With dead ends: 2125 [2020-09-25 13:35:46,043 INFO L226 Difference]: Without dead ends: 1439 [2020-09-25 13:35:46,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:35:46,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2020-09-25 13:35:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1204. [2020-09-25 13:35:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2020-09-25 13:35:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1522 transitions. [2020-09-25 13:35:46,127 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1522 transitions. Word has length 150 [2020-09-25 13:35:46,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:46,129 INFO L479 AbstractCegarLoop]: Abstraction has 1204 states and 1522 transitions. [2020-09-25 13:35:46,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1522 transitions. [2020-09-25 13:35:46,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 13:35:46,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:46,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:46,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:46,135 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:46,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:46,135 INFO L82 PathProgramCache]: Analyzing trace with hash -403760050, now seen corresponding path program 1 times [2020-09-25 13:35:46,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:46,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21485638] [2020-09-25 13:35:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:46,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:46,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:51,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 13:35:51,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:35:51,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:51,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:35:51,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:51,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:51,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:51,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:35:51,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:51,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:51,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 13:35:51,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:51,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 13:35:51,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:51,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 13:35:51,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:51,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21485638] [2020-09-25 13:35:51,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:51,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:35:51,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815772374] [2020-09-25 13:35:51,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:51,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:51,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:51,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:51,594 INFO L87 Difference]: Start difference. First operand 1204 states and 1522 transitions. Second operand 8 states. [2020-09-25 13:35:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:54,513 INFO L93 Difference]: Finished difference Result 3362 states and 4601 transitions. [2020-09-25 13:35:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:35:54,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-09-25 13:35:54,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:54,531 INFO L225 Difference]: With dead ends: 3362 [2020-09-25 13:35:54,531 INFO L226 Difference]: Without dead ends: 2332 [2020-09-25 13:35:54,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:35:54,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2020-09-25 13:35:54,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2134. [2020-09-25 13:35:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2134 states. [2020-09-25 13:35:54,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2778 transitions. [2020-09-25 13:35:54,628 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2778 transitions. Word has length 183 [2020-09-25 13:35:54,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:54,629 INFO L479 AbstractCegarLoop]: Abstraction has 2134 states and 2778 transitions. [2020-09-25 13:35:54,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:54,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2778 transitions. [2020-09-25 13:35:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 13:35:54,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:54,640 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:35:54,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:54,641 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:54,641 INFO L82 PathProgramCache]: Analyzing trace with hash 139673377, now seen corresponding path program 1 times [2020-09-25 13:35:54,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:54,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347825546] [2020-09-25 13:35:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:54,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:55,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:59,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 13:35:59,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:59,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:35:59,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:59,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:59,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:35:59,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:59,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:59,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:35:59,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:59,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:59,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:59,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:00,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:00,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:36:00,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 13:36:00,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:00,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:36:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:00,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:36:00,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:00,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:36:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:00,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:00,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:00,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:36:00,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:00,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 13:36:00,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:00,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:36:00,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:00,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347825546] [2020-09-25 13:36:00,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:00,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:36:00,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112632596] [2020-09-25 13:36:00,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:36:00,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:00,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:36:00,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:36:00,507 INFO L87 Difference]: Start difference. First operand 2134 states and 2778 transitions. Second operand 10 states. [2020-09-25 13:36:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:04,936 INFO L93 Difference]: Finished difference Result 5486 states and 7817 transitions. [2020-09-25 13:36:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:36:04,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 229 [2020-09-25 13:36:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:04,964 INFO L225 Difference]: With dead ends: 5486 [2020-09-25 13:36:04,964 INFO L226 Difference]: Without dead ends: 4004 [2020-09-25 13:36:04,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:36:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2020-09-25 13:36:05,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3757. [2020-09-25 13:36:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3757 states. [2020-09-25 13:36:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3757 states to 3757 states and 4990 transitions. [2020-09-25 13:36:05,104 INFO L78 Accepts]: Start accepts. Automaton has 3757 states and 4990 transitions. Word has length 229 [2020-09-25 13:36:05,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:05,105 INFO L479 AbstractCegarLoop]: Abstraction has 3757 states and 4990 transitions. [2020-09-25 13:36:05,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:36:05,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3757 states and 4990 transitions. [2020-09-25 13:36:05,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 13:36:05,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:05,111 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:36:05,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:36:05,111 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:05,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:05,112 INFO L82 PathProgramCache]: Analyzing trace with hash -441381004, now seen corresponding path program 1 times [2020-09-25 13:36:05,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:05,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416431258] [2020-09-25 13:36:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:07,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:07,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking...