/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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:51,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:51,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:51,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:51,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:51,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:51,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:51,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:51,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:51,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:51,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:51,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:51,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:51,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:51,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:51,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:51,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:51,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:51,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:51,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:51,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:51,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:51,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:51,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:51,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:51,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:51,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:51,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:51,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:51,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:51,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:51,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:51,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:51,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:51,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:51,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:51,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:51,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:51,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:51,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:51,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:51,888 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 10:10:51,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:51,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:51,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:51,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:51,935 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:51,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:51,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:51,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:51,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:51,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:51,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:51,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:51,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:51,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:51,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:51,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:51,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:51,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:51,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:51,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:51,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:51,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:51,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:51,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:51,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:51,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:51,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:51,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:51,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:51,941 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 10:10:52,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:52,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:52,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:52,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:52,439 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:52,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 10:10:52,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da46cbf05/c7d4926d93704416aed2160fbb7c6df5/FLAG36f8be69f [2020-09-25 10:10:53,176 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:53,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 10:10:53,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da46cbf05/c7d4926d93704416aed2160fbb7c6df5/FLAG36f8be69f [2020-09-25 10:10:53,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da46cbf05/c7d4926d93704416aed2160fbb7c6df5 [2020-09-25 10:10:53,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:53,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:53,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:53,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:53,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:53,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:53" (1/1) ... [2020-09-25 10:10:53,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:53, skipping insertion in model container [2020-09-25 10:10:53,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:53" (1/1) ... [2020-09-25 10:10:53,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:53,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:54,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:54,166 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:54,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:54,313 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:54,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:54 WrapperNode [2020-09-25 10:10:54,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:54,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:54,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:54,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:54,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:54" (1/1) ... [2020-09-25 10:10:54,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:54" (1/1) ... [2020-09-25 10:10:54,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:54" (1/1) ... [2020-09-25 10:10:54,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:54" (1/1) ... [2020-09-25 10:10:54,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:54" (1/1) ... [2020-09-25 10:10:54,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:54" (1/1) ... [2020-09-25 10:10:54,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:54" (1/1) ... [2020-09-25 10:10:54,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:54,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:54,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:54,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:54,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:54" (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 10:10:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:56,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:56,078 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:56,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:56 BoogieIcfgContainer [2020-09-25 10:10:56,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:56,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:56,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:56,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:56,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:53" (1/3) ... [2020-09-25 10:10:56,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:56, skipping insertion in model container [2020-09-25 10:10:56,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:54" (2/3) ... [2020-09-25 10:10:56,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:56, skipping insertion in model container [2020-09-25 10:10:56,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:56" (3/3) ... [2020-09-25 10:10:56,097 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2020-09-25 10:10:56,109 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:56,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:56,144 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:56,183 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:56,183 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:56,184 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:56,184 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:56,184 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:56,184 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:56,184 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:56,185 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:56,220 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:10:56,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 10:10:56,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:56,233 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] [2020-09-25 10:10:56,234 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:56,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:56,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1813443015, now seen corresponding path program 1 times [2020-09-25 10:10:56,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:56,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 10:10:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:56,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:57,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:10:57,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:10:57,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-09-25 10:10:57,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:57,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:10:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:10:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:10:57,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:57,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:57,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:10:57,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:57,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:10:57,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:57,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:10:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:57,976 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 10:10:57,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 10:10:57,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:57,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:57,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514538398] [2020-09-25 10:10:57,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:57,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:58,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:58,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:58,016 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:11:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:00,123 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 10:11:00,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:00,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 10:11:00,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:00,148 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 10:11:00,148 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 10:11:00,157 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 10:11:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 10:11:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 10:11:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 10:11:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 10:11:00,273 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 55 [2020-09-25 10:11:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:00,275 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 10:11:00,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 10:11:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 10:11:00,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:00,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:00,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:00,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:00,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:00,291 INFO L82 PathProgramCache]: Analyzing trace with hash -226140616, now seen corresponding path program 1 times [2020-09-25 10:11:00,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:00,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288640478] [2020-09-25 10:11:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:00,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:03,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 10:11:03,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:03,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3359 [2020-09-25 10:11:03,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:03,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 10:11:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:03,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:03,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:03,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:11:03,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:03,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:03,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:03,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:03,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:04,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:04,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:04,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 10:11:04,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:04,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:04,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:11:04,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:04,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288640478] [2020-09-25 10:11:04,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:04,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:11:04,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953986178] [2020-09-25 10:11:04,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:11:04,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:04,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:11:04,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:04,342 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 7 states. [2020-09-25 10:11:06,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:06,715 INFO L93 Difference]: Finished difference Result 1189 states and 1529 transitions. [2020-09-25 10:11:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:11:06,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-09-25 10:11:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:06,726 INFO L225 Difference]: With dead ends: 1189 [2020-09-25 10:11:06,726 INFO L226 Difference]: Without dead ends: 1187 [2020-09-25 10:11:06,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:11:06,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-09-25 10:11:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 851. [2020-09-25 10:11:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 10:11:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1111 transitions. [2020-09-25 10:11:06,779 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1111 transitions. Word has length 134 [2020-09-25 10:11:06,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:06,780 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1111 transitions. [2020-09-25 10:11:06,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:11:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1111 transitions. [2020-09-25 10:11:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 10:11:06,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:06,785 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:11:06,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:06,786 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:06,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:06,786 INFO L82 PathProgramCache]: Analyzing trace with hash -281265186, now seen corresponding path program 1 times [2020-09-25 10:11:06,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:06,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383814859] [2020-09-25 10:11:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:06,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:07,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:11,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-25 10:11:11,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 10:11:11,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:11,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:11,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:11,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:11,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-25 10:11:11,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:12,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:12,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:12,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:11:12,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:12,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:12,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:12,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:12,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:12,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:12,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 10:11:12,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:12,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:11:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:11:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:12,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:12,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 10:11:12,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:12,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-09-25 10:11:12,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:12,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 10:11:12,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 10:11:13,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383814859] [2020-09-25 10:11:13,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:13,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:11:13,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145964301] [2020-09-25 10:11:13,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:11:13,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:13,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:11:13,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:11:13,111 INFO L87 Difference]: Start difference. First operand 851 states and 1111 transitions. Second operand 9 states. [2020-09-25 10:11:16,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:16,655 INFO L93 Difference]: Finished difference Result 2360 states and 3191 transitions. [2020-09-25 10:11:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:11:16,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 263 [2020-09-25 10:11:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:16,668 INFO L225 Difference]: With dead ends: 2360 [2020-09-25 10:11:16,668 INFO L226 Difference]: Without dead ends: 1500 [2020-09-25 10:11:16,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:11:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-09-25 10:11:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1306. [2020-09-25 10:11:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1306 states. [2020-09-25 10:11:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1637 transitions. [2020-09-25 10:11:16,734 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1637 transitions. Word has length 263 [2020-09-25 10:11:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:16,737 INFO L479 AbstractCegarLoop]: Abstraction has 1306 states and 1637 transitions. [2020-09-25 10:11:16,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:11:16,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1637 transitions. [2020-09-25 10:11:16,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 10:11:16,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:16,747 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:11:16,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:16,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:16,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:16,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1969044888, now seen corresponding path program 1 times [2020-09-25 10:11:16,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:16,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838014840] [2020-09-25 10:11:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:21,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 10:11:21,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 10:11:21,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:21,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-09-25 10:11:21,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:21,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:21,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:21,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:11:21,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:21,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:21,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:22,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:22,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 10:11:22,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:11:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:22,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:11:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:22,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 10:11:22,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 10:11:22,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:22,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:22,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 10:11:22,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:11:22,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838014840] [2020-09-25 10:11:22,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:22,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:22,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780166331] [2020-09-25 10:11:22,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:22,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:22,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:22,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:22,982 INFO L87 Difference]: Start difference. First operand 1306 states and 1637 transitions. Second operand 8 states. [2020-09-25 10:11:25,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:25,293 INFO L93 Difference]: Finished difference Result 3121 states and 4057 transitions. [2020-09-25 10:11:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:11:25,294 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 269 [2020-09-25 10:11:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:25,308 INFO L225 Difference]: With dead ends: 3121 [2020-09-25 10:11:25,308 INFO L226 Difference]: Without dead ends: 1830 [2020-09-25 10:11:25,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:11:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-09-25 10:11:25,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1626. [2020-09-25 10:11:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1626 states. [2020-09-25 10:11:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2007 transitions. [2020-09-25 10:11:25,389 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2007 transitions. Word has length 269 [2020-09-25 10:11:25,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:25,390 INFO L479 AbstractCegarLoop]: Abstraction has 1626 states and 2007 transitions. [2020-09-25 10:11:25,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:25,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2007 transitions. [2020-09-25 10:11:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 10:11:25,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:25,400 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:11:25,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:25,404 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:25,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:25,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1451587462, now seen corresponding path program 1 times [2020-09-25 10:11:25,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:25,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175092744] [2020-09-25 10:11:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:29,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:30,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 10:11:30,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:11:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:11:30,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:30,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 10:11:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:30,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:30,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:30,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:30,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:11:30,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:30,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:30,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:30,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:30,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:30,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:30,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:30,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:30,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 10:11:30,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:30,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:30,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 10:11:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 10:11:31,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:31,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-09-25 10:11:31,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:31,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:31,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 10:11:31,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:11:31,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175092744] [2020-09-25 10:11:31,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:31,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:11:31,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747954308] [2020-09-25 10:11:31,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:11:31,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:31,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:11:31,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:11:31,718 INFO L87 Difference]: Start difference. First operand 1626 states and 2007 transitions. Second operand 10 states. [2020-09-25 10:11:35,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:35,838 INFO L93 Difference]: Finished difference Result 4684 states and 6424 transitions. [2020-09-25 10:11:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:11:35,843 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 279 [2020-09-25 10:11:35,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:35,873 INFO L225 Difference]: With dead ends: 4684 [2020-09-25 10:11:35,873 INFO L226 Difference]: Without dead ends: 3073 [2020-09-25 10:11:35,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:11:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2020-09-25 10:11:36,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2790. [2020-09-25 10:11:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2790 states. [2020-09-25 10:11:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3569 transitions. [2020-09-25 10:11:36,028 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3569 transitions. Word has length 279 [2020-09-25 10:11:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:36,029 INFO L479 AbstractCegarLoop]: Abstraction has 2790 states and 3569 transitions. [2020-09-25 10:11:36,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:11:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3569 transitions. [2020-09-25 10:11:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-09-25 10:11:36,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:36,046 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:36,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:11:36,047 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:36,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1322662894, now seen corresponding path program 1 times [2020-09-25 10:11:36,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:36,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957492544] [2020-09-25 10:11:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking...