/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=0.2 --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/Problem02_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:16:45,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:16:45,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:16:45,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:16:45,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:16:45,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:16:45,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:16:45,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:16:45,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:16:45,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:16:45,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:16:45,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:16:45,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:16:45,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:16:45,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:16:45,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:16:45,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:16:45,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:16:45,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:16:45,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:16:45,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:16:45,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:16:45,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:16:45,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:16:45,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:16:45,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:16:45,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:16:45,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:16:45,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:16:45,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:16:45,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:16:45,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:16:45,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:16:45,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:16:45,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:16:45,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:16:45,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:16:45,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:16:45,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:16:45,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:16:45,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:16:45,339 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 11:16:45,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:16:45,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:16:45,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:16:45,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:16:45,402 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:16:45,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:16:45,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:16:45,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:16:45,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:16:45,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:16:45,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:16:45,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:16:45,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:16:45,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:16:45,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:16:45,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:16:45,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:16:45,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:16:45,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:16:45,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:16:45,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:16:45,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:16:45,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:16:45,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:16:45,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:16:45,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:16:45,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:16:45,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:16:45,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:16:45,412 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=0.2;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:16:45,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:16:45,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:16:45,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:16:45,920 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:16:45,920 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:16:45,922 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label32.c [2020-09-25 11:16:46,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d9049093/b38f9177e3104c11ba8e2178a7e7c16a/FLAG33fc32f43 [2020-09-25 11:16:46,646 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:16:46,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label32.c [2020-09-25 11:16:46,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d9049093/b38f9177e3104c11ba8e2178a7e7c16a/FLAG33fc32f43 [2020-09-25 11:16:46,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d9049093/b38f9177e3104c11ba8e2178a7e7c16a [2020-09-25 11:16:46,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:16:46,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:16:46,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:46,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:16:46,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:16:46,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:46" (1/1) ... [2020-09-25 11:16:46,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:46, skipping insertion in model container [2020-09-25 11:16:46,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:46" (1/1) ... [2020-09-25 11:16:46,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:16:47,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:16:47,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:47,473 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:16:47,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:47,742 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:16:47,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:47 WrapperNode [2020-09-25 11:16:47,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:47,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:16:47,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:16:47,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:16:47,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:47" (1/1) ... [2020-09-25 11:16:47,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:47" (1/1) ... [2020-09-25 11:16:47,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:47" (1/1) ... [2020-09-25 11:16:47,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:47" (1/1) ... [2020-09-25 11:16:47,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:47" (1/1) ... [2020-09-25 11:16:47,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:47" (1/1) ... [2020-09-25 11:16:47,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:47" (1/1) ... [2020-09-25 11:16:47,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:16:47,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:16:47,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:16:47,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:16:47,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:47" (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 11:16:47,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:16:47,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:16:47,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:16:47,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:16:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:16:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:16:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:16:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:16:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:16:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:16:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:16:49,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:16:49,491 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:16:49,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:49 BoogieIcfgContainer [2020-09-25 11:16:49,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:16:49,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:16:49,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:16:49,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:16:49,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:16:46" (1/3) ... [2020-09-25 11:16:49,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a6de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:49, skipping insertion in model container [2020-09-25 11:16:49,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:47" (2/3) ... [2020-09-25 11:16:49,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a6de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:49, skipping insertion in model container [2020-09-25 11:16:49,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:49" (3/3) ... [2020-09-25 11:16:49,511 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label32.c [2020-09-25 11:16:49,524 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:16:49,537 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:16:49,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:16:49,603 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:16:49,603 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:16:49,603 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:16:49,603 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:16:49,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:16:49,604 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:16:49,604 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:16:49,604 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:16:49,639 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:16:49,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 11:16:49,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:49,662 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:49,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:49,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:49,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1568421906, now seen corresponding path program 1 times [2020-09-25 11:16:49,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:49,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606475125] [2020-09-25 11:16:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:52,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:53,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:53,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:55,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 11:16:55,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:16:55,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 11:16:55,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:55,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:55,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:55,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:16:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 11:16:55,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:16:55,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:55,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:55,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:55,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:55,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 11:16:55,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:55,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:16:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:55,360 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 11:16:55,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606475125] [2020-09-25 11:16:55,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:16:55,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:16:55,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000363182] [2020-09-25 11:16:55,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:16:55,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:55,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:16:55,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:16:55,394 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:16:57,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:57,503 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 11:16:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:16:57,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-09-25 11:16:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:57,538 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 11:16:57,539 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 11:16:57,557 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 11:16:57,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 11:16:57,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 11:16:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 11:16:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 11:16:57,662 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 135 [2020-09-25 11:16:57,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:57,663 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 11:16:57,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:16:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 11:16:57,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 11:16:57,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:57,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:57,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:16:57,678 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:57,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:57,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1651782903, now seen corresponding path program 1 times [2020-09-25 11:16:57,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:57,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347920886] [2020-09-25 11:16:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:58,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:00,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:02,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 11:17:02,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:17:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 11:17:02,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:02,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 11:17:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 11:17:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:02,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:17:02,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:02,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:02,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:17:02,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:02,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:17:02,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:02,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:02,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:02,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:02,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:17:02,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:17:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:03,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347920886] [2020-09-25 11:17:03,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:03,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:03,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894229987] [2020-09-25 11:17:03,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:03,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:03,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:03,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:03,042 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 11:17:04,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:04,874 INFO L93 Difference]: Finished difference Result 1540 states and 1960 transitions. [2020-09-25 11:17:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:04,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-09-25 11:17:04,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:04,883 INFO L225 Difference]: With dead ends: 1540 [2020-09-25 11:17:04,884 INFO L226 Difference]: Without dead ends: 737 [2020-09-25 11:17:04,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 11:17:04,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-09-25 11:17:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 715. [2020-09-25 11:17:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-09-25 11:17:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 834 transitions. [2020-09-25 11:17:04,936 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 834 transitions. Word has length 169 [2020-09-25 11:17:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:04,937 INFO L479 AbstractCegarLoop]: Abstraction has 715 states and 834 transitions. [2020-09-25 11:17:04,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 834 transitions. [2020-09-25 11:17:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 11:17:04,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:04,942 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:04,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:17:04,942 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:04,943 INFO L82 PathProgramCache]: Analyzing trace with hash 516365175, now seen corresponding path program 1 times [2020-09-25 11:17:04,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:04,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900191009] [2020-09-25 11:17:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:04,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:05,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:05,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:06,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:08,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:09,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:09,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 11:17:09,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:17:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:17:09,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:09,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:17:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:17:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:10,770 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-09-25 11:17:10,936 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-09-25 11:17:11,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:11,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:11,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:11,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:11,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 11:17:11,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:11,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:11,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:11,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:11,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:11,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:11,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:17:11,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:11,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 11:17:11,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:11,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:17:11,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:12,005 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 11:17:12,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900191009] [2020-09-25 11:17:12,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:12,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 11:17:12,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342200493] [2020-09-25 11:17:12,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 11:17:12,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:12,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 11:17:12,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:17:12,010 INFO L87 Difference]: Start difference. First operand 715 states and 834 transitions. Second operand 17 states. [2020-09-25 11:17:14,026 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-25 11:17:14,352 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-09-25 11:17:16,016 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-09-25 11:17:16,381 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2020-09-25 11:17:16,824 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2020-09-25 11:17:17,008 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-09-25 11:17:17,328 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2020-09-25 11:17:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:17,733 INFO L93 Difference]: Finished difference Result 2312 states and 2849 transitions. [2020-09-25 11:17:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 11:17:17,739 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-09-25 11:17:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:17,749 INFO L225 Difference]: With dead ends: 2312 [2020-09-25 11:17:17,749 INFO L226 Difference]: Without dead ends: 1616 [2020-09-25 11:17:17,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-09-25 11:17:17,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2020-09-25 11:17:17,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1578. [2020-09-25 11:17:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-09-25 11:17:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 1839 transitions. [2020-09-25 11:17:17,808 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 1839 transitions. Word has length 170 [2020-09-25 11:17:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:17,809 INFO L479 AbstractCegarLoop]: Abstraction has 1578 states and 1839 transitions. [2020-09-25 11:17:17,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 11:17:17,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 1839 transitions. [2020-09-25 11:17:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 11:17:17,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:17,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:17:17,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:17:17,819 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:17,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:17,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1133706148, now seen corresponding path program 1 times [2020-09-25 11:17:17,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:17,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313324693] [2020-09-25 11:17:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:17,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:22,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:22,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 11:17:22,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:17:22,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 11:17:22,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:22,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:17:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 11:17:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 11:17:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:17:23,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:23,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:23,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:23,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:23,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:23,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:17:23,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:23,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:23,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:23,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:23,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:23,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:17:23,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:23,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:17:23,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:23,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:23,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:23,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:23,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:23,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:23,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 11:17:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:23,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:23,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:23,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:17:23,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:23,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 11:17:23,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:23,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:23,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:17:23,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:23,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:17:23,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 11:17:23,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313324693] [2020-09-25 11:17:23,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:23,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:17:23,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482533892] [2020-09-25 11:17:23,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:17:23,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:23,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:17:23,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:17:23,624 INFO L87 Difference]: Start difference. First operand 1578 states and 1839 transitions. Second operand 8 states. [2020-09-25 11:17:26,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:26,505 INFO L93 Difference]: Finished difference Result 3545 states and 4229 transitions. [2020-09-25 11:17:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:17:26,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-09-25 11:17:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:26,522 INFO L225 Difference]: With dead ends: 3545 [2020-09-25 11:17:26,522 INFO L226 Difference]: Without dead ends: 1891 [2020-09-25 11:17:26,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:17:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-09-25 11:17:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1874. [2020-09-25 11:17:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1874 states. [2020-09-25 11:17:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2151 transitions. [2020-09-25 11:17:26,598 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2151 transitions. Word has length 213 [2020-09-25 11:17:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:26,600 INFO L479 AbstractCegarLoop]: Abstraction has 1874 states and 2151 transitions. [2020-09-25 11:17:26,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:17:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2151 transitions. [2020-09-25 11:17:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 11:17:26,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:26,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:26,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:17:26,610 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:26,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:26,611 INFO L82 PathProgramCache]: Analyzing trace with hash -374519079, now seen corresponding path program 1 times [2020-09-25 11:17:26,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:26,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540780582] [2020-09-25 11:17:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:26,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:26,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:27,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:31,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:31,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 11:17:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:17:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 11:17:31,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:31,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:17:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-25 11:17:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:32,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:32,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:32,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:32,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:32,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:17:32,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:32,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:32,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:32,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:32,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:32,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:32,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:32,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:32,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:17:32,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-09-25 11:17:32,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:32,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:17:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:17:32,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:32,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540780582] [2020-09-25 11:17:32,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:32,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:17:32,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360203208] [2020-09-25 11:17:32,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:17:32,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:17:32,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:17:32,880 INFO L87 Difference]: Start difference. First operand 1874 states and 2151 transitions. Second operand 10 states.