/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:26,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:26,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:26,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:26,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:26,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:26,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:26,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:26,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:26,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:26,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:26,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:26,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:26,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:26,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:26,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:26,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:26,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:26,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:26,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:26,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:26,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:26,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:26,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:26,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:26,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:26,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:26,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:26,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:26,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:26,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:26,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:26,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:26,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:26,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:26,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:26,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:26,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:26,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:26,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:26,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:26,458 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 04:24:26,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:26,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:26,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:26,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:26,503 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:26,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:26,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:26,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:26,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:26,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:26,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:26,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:26,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:26,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:26,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:26,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:26,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:26,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:26,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:26,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:26,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:26,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:26,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:26,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:26,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:26,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:26,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:26,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:26,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:26,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:24:26,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:27,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:27,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:27,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:27,027 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:27,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 04:24:27,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0eadb61f9/28e2deafd51c407bbb321c562f5d568b/FLAG8e966b291 [2020-09-25 04:24:27,757 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:27,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 04:24:27,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0eadb61f9/28e2deafd51c407bbb321c562f5d568b/FLAG8e966b291 [2020-09-25 04:24:28,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0eadb61f9/28e2deafd51c407bbb321c562f5d568b [2020-09-25 04:24:28,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:28,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:28,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:28,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:28,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:28,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:28" (1/1) ... [2020-09-25 04:24:28,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45241865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28, skipping insertion in model container [2020-09-25 04:24:28,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:28" (1/1) ... [2020-09-25 04:24:28,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:28,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:28,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:28,786 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:28,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:28,940 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:28,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28 WrapperNode [2020-09-25 04:24:28,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:28,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:28,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:28,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:28,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28" (1/1) ... [2020-09-25 04:24:28,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28" (1/1) ... [2020-09-25 04:24:28,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28" (1/1) ... [2020-09-25 04:24:28,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28" (1/1) ... [2020-09-25 04:24:29,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28" (1/1) ... [2020-09-25 04:24:29,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28" (1/1) ... [2020-09-25 04:24:29,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28" (1/1) ... [2020-09-25 04:24:29,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:29,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:29,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:29,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:29,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28" (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 04:24:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:24:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:24:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:24:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:30,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:30,622 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:24:30,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:30 BoogieIcfgContainer [2020-09-25 04:24:30,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:30,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:30,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:30,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:30,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:28" (1/3) ... [2020-09-25 04:24:30,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6150b044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:30, skipping insertion in model container [2020-09-25 04:24:30,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:28" (2/3) ... [2020-09-25 04:24:30,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6150b044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:30, skipping insertion in model container [2020-09-25 04:24:30,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:30" (3/3) ... [2020-09-25 04:24:30,648 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-25 04:24:30,660 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:30,675 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:30,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:24:30,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:24:30,742 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:24:30,742 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:24:30,742 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:24:30,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:24:30,742 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:24:30,743 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:24:30,743 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:24:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:24:30,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 04:24:30,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:30,801 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] [2020-09-25 04:24:30,802 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:30,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:30,810 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-25 04:24:30,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:30,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694459714] [2020-09-25 04:24:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:31,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:33,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:36,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 04:24:36,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:24:36,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:24:36,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:36,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:24:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 04:24:36,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:24:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:36,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:36,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:36,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:24:36,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:36,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:36,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:36,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:36,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:24:36,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:24:36,494 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 04:24:36,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694459714] [2020-09-25 04:24:36,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:36,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:36,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779952191] [2020-09-25 04:24:36,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:36,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:36,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:36,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:36,538 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:24:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:39,107 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 04:24:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:24:39,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 04:24:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:39,136 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 04:24:39,136 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 04:24:39,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:24:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 04:24:39,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 04:24:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 04:24:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 04:24:39,257 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 122 [2020-09-25 04:24:39,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:39,258 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 04:24:39,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:39,259 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 04:24:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 04:24:39,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:39,267 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:39,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:39,268 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash -329610872, now seen corresponding path program 1 times [2020-09-25 04:24:39,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:39,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929106832] [2020-09-25 04:24:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:39,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:41,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 04:24:41,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:24:41,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2018 [2020-09-25 04:24:41,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:41,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:41,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:41,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:24:41,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 04:24:41,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:41,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:41,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:41,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:41,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:24:41,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:41,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:41,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:24:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:41,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:41,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:24:41,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:41,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:24:41,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:41,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929106832] [2020-09-25 04:24:41,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:41,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:24:41,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009148461] [2020-09-25 04:24:41,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:24:41,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:41,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:24:41,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:24:41,651 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 04:24:43,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:43,928 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 04:24:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:24:43,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 04:24:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:43,942 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 04:24:43,942 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 04:24:43,945 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 04:24:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 04:24:43,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 04:24:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 04:24:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 04:24:43,991 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 143 [2020-09-25 04:24:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:43,991 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 04:24:43,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:24:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 04:24:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 04:24:43,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:43,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:24:43,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:24:43,997 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:43,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:43,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1723591899, now seen corresponding path program 1 times [2020-09-25 04:24:43,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:43,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904549179] [2020-09-25 04:24:43,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:49,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 04:24:49,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:24:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 04:24:49,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:49,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:24:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:24:49,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:49,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:49,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:49,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:24:49,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:49,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:49,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:49,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:24:49,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:24:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:49,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:49,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:49,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:24:49,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:49,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:24:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:24:49,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:24:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:49,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:24:49,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:49,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 04:24:49,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:49,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:49,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:24:49,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 04:24:49,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:49,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904549179] [2020-09-25 04:24:49,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:49,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:24:49,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087668212] [2020-09-25 04:24:49,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:49,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:49,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:49,368 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 7 states. [2020-09-25 04:24:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:52,149 INFO L93 Difference]: Finished difference Result 2609 states and 3341 transitions. [2020-09-25 04:24:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:24:52,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 04:24:52,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:52,170 INFO L225 Difference]: With dead ends: 2609 [2020-09-25 04:24:52,170 INFO L226 Difference]: Without dead ends: 1683 [2020-09-25 04:24:52,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:24:52,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-09-25 04:24:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1416. [2020-09-25 04:24:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1416 states. [2020-09-25 04:24:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1693 transitions. [2020-09-25 04:24:52,261 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1693 transitions. Word has length 160 [2020-09-25 04:24:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:52,262 INFO L479 AbstractCegarLoop]: Abstraction has 1416 states and 1693 transitions. [2020-09-25 04:24:52,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:52,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1693 transitions. [2020-09-25 04:24:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 04:24:52,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:52,283 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:52,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:24:52,284 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:52,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2123224051, now seen corresponding path program 1 times [2020-09-25 04:24:52,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:52,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615085621] [2020-09-25 04:24:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:52,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:55,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:56,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:57,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 04:24:57,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:24:57,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:24:57,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:57,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:24:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:24:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:57,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:57,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:57,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:57,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:24:57,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:57,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:57,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:24:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:57,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:57,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:57,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:24:57,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:57,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:24:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:57,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:24:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:57,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:57,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 04:24:57,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:57,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:24:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:24:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:24:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:57,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615085621] [2020-09-25 04:24:57,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:57,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:24:57,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350984669] [2020-09-25 04:24:57,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:57,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:57,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:57,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:57,696 INFO L87 Difference]: Start difference. First operand 1416 states and 1693 transitions. Second operand 7 states. [2020-09-25 04:25:00,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:00,260 INFO L93 Difference]: Finished difference Result 3226 states and 3947 transitions. [2020-09-25 04:25:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:00,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-25 04:25:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:00,276 INFO L225 Difference]: With dead ends: 3226 [2020-09-25 04:25:00,277 INFO L226 Difference]: Without dead ends: 1834 [2020-09-25 04:25:00,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:25:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2020-09-25 04:25:00,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1602. [2020-09-25 04:25:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1602 states. [2020-09-25 04:25:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 1844 transitions. [2020-09-25 04:25:00,354 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 1844 transitions. Word has length 174 [2020-09-25 04:25:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:00,356 INFO L479 AbstractCegarLoop]: Abstraction has 1602 states and 1844 transitions. [2020-09-25 04:25:00,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:00,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 1844 transitions. [2020-09-25 04:25:00,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:25:00,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:00,363 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:00,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:25:00,364 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:00,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:00,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1953830612, now seen corresponding path program 1 times [2020-09-25 04:25:00,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:00,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379112925] [2020-09-25 04:25:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:00,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:05,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 04:25:05,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:25:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 04:25:05,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:05,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:05,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:05,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 04:25:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 04:25:05,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:25:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:05,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:25:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:05,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:05,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:05,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:25:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:05,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:05,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:25:05,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:25:05,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:05,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:25:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:05,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:05,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:25:05,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:05,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:05,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:25:05,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 04:25:05,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379112925] [2020-09-25 04:25:05,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:05,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:05,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610450287] [2020-09-25 04:25:05,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:05,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:05,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:05,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:05,766 INFO L87 Difference]: Start difference. First operand 1602 states and 1844 transitions. Second operand 5 states. [2020-09-25 04:25:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:07,847 INFO L93 Difference]: Finished difference Result 3962 states and 4699 transitions. [2020-09-25 04:25:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:07,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 04:25:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:07,859 INFO L225 Difference]: With dead ends: 3962 [2020-09-25 04:25:07,859 INFO L226 Difference]: Without dead ends: 2384 [2020-09-25 04:25:07,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 04:25:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2020-09-25 04:25:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2319. [2020-09-25 04:25:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2319 states. [2020-09-25 04:25:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 2683 transitions. [2020-09-25 04:25:07,931 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 2683 transitions. Word has length 181 [2020-09-25 04:25:07,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:07,932 INFO L479 AbstractCegarLoop]: Abstraction has 2319 states and 2683 transitions. [2020-09-25 04:25:07,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:07,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 2683 transitions. [2020-09-25 04:25:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 04:25:07,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:07,941 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2020-09-25 04:25:07,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:25:07,941 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:07,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1651416585, now seen corresponding path program 1 times [2020-09-25 04:25:07,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:07,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772691115] [2020-09-25 04:25:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:08,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:12,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:12,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 04:25:12,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:25:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:12,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:25:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:25:12,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:13,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:13,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:13,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:13,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:25:13,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:13,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:13,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:13,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:13,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:13,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:13,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:13,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:13,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:13,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:25:13,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:13,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:25:13,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:13,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:13,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:13,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:25:13,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:13,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 04:25:13,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:13,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:25:13,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:13,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 04:25:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:13,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:13,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:25:13,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:13,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:25:13,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:13,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 04:25:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:13,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 78 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 04:25:13,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772691115] [2020-09-25 04:25:13,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:13,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:13,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012349431] [2020-09-25 04:25:13,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:13,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:13,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:13,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:13,456 INFO L87 Difference]: Start difference. First operand 2319 states and 2683 transitions. Second operand 7 states.