/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=0.5 --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/Problem02_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:50,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:50,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:50,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:50,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:50,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:50,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:50,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:50,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:50,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:50,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:50,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:50,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:50,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:50,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:50,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:50,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:50,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:50,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:50,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:50,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:50,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:50,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:50,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:50,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:50,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:50,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:50,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:50,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:50,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:50,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:50,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:50,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:50,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:50,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:50,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:50,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:50,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:50,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:50,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:50,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:50,849 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 14:40:50,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:50,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:50,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:50,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:50,877 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:50,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:50,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:50,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:50,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:50,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:50,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:50,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:50,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:50,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:50,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:50,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:50,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:50,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:50,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:50,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:50,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:50,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:50,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:50,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:50,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:50,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:50,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:50,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:50,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:50,882 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:40:51,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:51,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:51,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:51,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:51,359 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:51,360 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 14:40:51,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84244e9b9/0dae210f666e48758a53b7745a4210b5/FLAG139f8a0b7 [2020-09-25 14:40:52,133 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:52,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 14:40:52,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84244e9b9/0dae210f666e48758a53b7745a4210b5/FLAG139f8a0b7 [2020-09-25 14:40:52,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84244e9b9/0dae210f666e48758a53b7745a4210b5 [2020-09-25 14:40:52,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:52,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:52,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:52,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:52,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:52,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:52" (1/1) ... [2020-09-25 14:40:52,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:52, skipping insertion in model container [2020-09-25 14:40:52,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:52" (1/1) ... [2020-09-25 14:40:52,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:52,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:53,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:53,020 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:53,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:53,230 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:53,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53 WrapperNode [2020-09-25 14:40:53,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:53,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:53,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:53,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:53,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:53,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:53,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:53,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:53,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (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 14:40:53,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:54,766 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:54,766 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:54,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:54 BoogieIcfgContainer [2020-09-25 14:40:54,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:54,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:54,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:54,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:54,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:52" (1/3) ... [2020-09-25 14:40:54,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:54, skipping insertion in model container [2020-09-25 14:40:54,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (2/3) ... [2020-09-25 14:40:54,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:54, skipping insertion in model container [2020-09-25 14:40:54,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:54" (3/3) ... [2020-09-25 14:40:54,795 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-25 14:40:54,806 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:54,817 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:54,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:54,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:54,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:54,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:54,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:54,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:54,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:54,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:54,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:54,906 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 14:40:54,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:54,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:54,934 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:54,941 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-25 14:40:54,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:54,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652298201] [2020-09-25 14:40:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:55,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:00,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 14:41:00,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:41:00,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:00,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:41:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 14:41:00,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:41:00,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:00,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:00,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:00,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:41:00,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:00,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:41:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:00,597 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 14:41:00,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652298201] [2020-09-25 14:41:00,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:00,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:41:00,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853505565] [2020-09-25 14:41:00,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:00,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:00,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:00,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:00,643 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 14:41:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:03,483 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 14:41:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:03,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-25 14:41:03,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:03,523 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 14:41:03,523 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 14:41:03,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:03,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 14:41:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 14:41:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 14:41:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 14:41:03,639 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 127 [2020-09-25 14:41:03,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:03,641 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 14:41:03,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 14:41:03,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 14:41:03,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:03,649 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:03,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:03,650 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:03,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:03,650 INFO L82 PathProgramCache]: Analyzing trace with hash -15410791, now seen corresponding path program 1 times [2020-09-25 14:41:03,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:03,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023238191] [2020-09-25 14:41:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:03,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:05,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:08,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 14:41:08,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:41:08,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:08,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 14:41:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 14:41:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:08,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:08,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:08,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:41:08,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:08,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:08,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:09,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:09,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:41:09,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:09,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:41:09,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:09,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 14:41:09,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:09,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023238191] [2020-09-25 14:41:09,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:09,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:09,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353209892] [2020-09-25 14:41:09,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:09,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:09,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:09,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:09,110 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 14:41:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:10,694 INFO L93 Difference]: Finished difference Result 1533 states and 1849 transitions. [2020-09-25 14:41:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:10,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 14:41:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:10,703 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 14:41:10,703 INFO L226 Difference]: Without dead ends: 934 [2020-09-25 14:41:10,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-25 14:41:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 924. [2020-09-25 14:41:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-09-25 14:41:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1094 transitions. [2020-09-25 14:41:10,760 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1094 transitions. Word has length 144 [2020-09-25 14:41:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:10,761 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1094 transitions. [2020-09-25 14:41:10,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1094 transitions. [2020-09-25 14:41:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 14:41:10,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:10,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:10,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:10,768 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:10,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:10,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1872606423, now seen corresponding path program 1 times [2020-09-25 14:41:10,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:10,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584749545] [2020-09-25 14:41:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:14,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:14,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:15,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 14:41:15,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:15,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 14:41:15,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:15,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:41:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:41:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:41:15,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:16,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:16,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:16,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:41:16,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:16,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:41:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:16,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:16,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:41:16,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 14:41:16,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:16,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:41:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:17,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584749545] [2020-09-25 14:41:17,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:17,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 14:41:17,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600373194] [2020-09-25 14:41:17,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 14:41:17,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:17,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 14:41:17,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:41:17,080 INFO L87 Difference]: Start difference. First operand 924 states and 1094 transitions. Second operand 16 states. [2020-09-25 14:41:21,722 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-09-25 14:41:22,029 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-09-25 14:41:22,436 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-09-25 14:41:22,873 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-09-25 14:41:23,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:23,367 INFO L93 Difference]: Finished difference Result 2748 states and 3465 transitions. [2020-09-25 14:41:23,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 14:41:23,368 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 162 [2020-09-25 14:41:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:23,385 INFO L225 Difference]: With dead ends: 2748 [2020-09-25 14:41:23,385 INFO L226 Difference]: Without dead ends: 1846 [2020-09-25 14:41:23,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2020-09-25 14:41:23,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-09-25 14:41:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1791. [2020-09-25 14:41:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2020-09-25 14:41:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2139 transitions. [2020-09-25 14:41:23,479 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2139 transitions. Word has length 162 [2020-09-25 14:41:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:23,479 INFO L479 AbstractCegarLoop]: Abstraction has 1791 states and 2139 transitions. [2020-09-25 14:41:23,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 14:41:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2139 transitions. [2020-09-25 14:41:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 14:41:23,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:23,490 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:23,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:23,491 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:23,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:23,492 INFO L82 PathProgramCache]: Analyzing trace with hash -582188610, now seen corresponding path program 1 times [2020-09-25 14:41:23,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:23,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478089737] [2020-09-25 14:41:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:25,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:28,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 14:41:28,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:41:28,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:28,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 14:41:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 14:41:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:28,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:28,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:28,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:28,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:28,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:28,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:28,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:28,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:41:28,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:41:28,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:28,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:28,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:28,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:41:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:28,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:41:28,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 14:41:28,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:28,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:41:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 14:41:28,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478089737] [2020-09-25 14:41:28,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:28,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:41:28,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99133862] [2020-09-25 14:41:28,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:41:28,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:28,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:41:28,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:28,873 INFO L87 Difference]: Start difference. First operand 1791 states and 2139 transitions. Second operand 6 states. [2020-09-25 14:41:30,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:30,727 INFO L93 Difference]: Finished difference Result 3073 states and 3673 transitions. [2020-09-25 14:41:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:30,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-09-25 14:41:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:30,743 INFO L225 Difference]: With dead ends: 3073 [2020-09-25 14:41:30,744 INFO L226 Difference]: Without dead ends: 802 [2020-09-25 14:41:30,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:30,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-09-25 14:41:30,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 792. [2020-09-25 14:41:30,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-09-25 14:41:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 866 transitions. [2020-09-25 14:41:30,793 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 866 transitions. Word has length 178 [2020-09-25 14:41:30,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:30,794 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 866 transitions. [2020-09-25 14:41:30,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:41:30,794 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 866 transitions. [2020-09-25 14:41:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 14:41:30,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:30,798 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:30,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:30,799 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:30,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:30,799 INFO L82 PathProgramCache]: Analyzing trace with hash 852780038, now seen corresponding path program 1 times [2020-09-25 14:41:30,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:30,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259518384] [2020-09-25 14:41:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:35,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:35,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 14:41:35,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:35,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-09-25 14:41:35,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:35,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:41:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-25 14:41:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:41:35,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:36,458 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-09-25 14:41:36,605 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-09-25 14:41:36,815 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 43 [2020-09-25 14:41:37,013 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 39 [2020-09-25 14:41:37,179 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 35 [2020-09-25 14:41:37,349 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 30 [2020-09-25 14:41:37,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:37,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:37,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:41:37,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:37,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:37,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:41:37,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:37,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:41:37,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:37,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:37,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:41:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:37,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:41:37,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 14:41:37,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:37,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:37,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:41:37,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 14:41:37,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259518384] [2020-09-25 14:41:37,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:37,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:41:37,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003919505] [2020-09-25 14:41:37,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:41:37,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:37,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:41:37,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:41:37,776 INFO L87 Difference]: Start difference. First operand 792 states and 866 transitions. Second operand 14 states.