/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:39:45,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:39:45,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:39:45,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:39:45,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:39:45,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:39:45,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:39:45,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:39:45,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:39:45,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:39:45,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:39:45,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:39:45,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:39:45,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:39:45,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:39:45,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:39:45,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:39:45,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:39:45,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:39:45,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:39:45,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:39:45,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:39:45,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:39:45,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:39:45,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:39:45,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:39:45,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:39:45,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:39:45,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:39:45,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:39:45,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:39:45,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:39:45,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:39:45,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:39:45,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:39:45,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:39:45,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:39:45,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:39:45,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:39:45,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:39:45,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:39:45,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:39:45,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:39:45,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:39:45,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:39:45,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:39:45,882 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:39:45,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:39:45,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:39:45,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:39:45,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:39:45,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:39:45,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:39:45,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:39:45,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:39:45,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:39:45,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:39:45,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:39:45,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:39:45,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:39:45,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:39:45,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:39:45,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:39:45,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:39:45,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:39:45,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:39:45,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:39:45,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:39:45,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:39:45,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:39:45,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:39:45,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:39:46,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:39:46,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:39:46,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:39:46,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:39:46,377 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:39:46,379 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label32.c [2020-09-25 14:39:46,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bee4d3678/27eabeb6152e46df933a7f4b75bc00d5/FLAGc18ae4b48 [2020-09-25 14:39:47,149 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:39:47,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label32.c [2020-09-25 14:39:47,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bee4d3678/27eabeb6152e46df933a7f4b75bc00d5/FLAGc18ae4b48 [2020-09-25 14:39:47,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bee4d3678/27eabeb6152e46df933a7f4b75bc00d5 [2020-09-25 14:39:47,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:39:47,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:39:47,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:39:47,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:39:47,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:39:47,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:39:47" (1/1) ... [2020-09-25 14:39:47,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7024c256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:47, skipping insertion in model container [2020-09-25 14:39:47,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:39:47" (1/1) ... [2020-09-25 14:39:47,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:39:47,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:39:48,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:39:48,235 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:39:48,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:39:48,361 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:39:48,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:48 WrapperNode [2020-09-25 14:39:48,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:39:48,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:39:48,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:39:48,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:39:48,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:48" (1/1) ... [2020-09-25 14:39:48,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:48" (1/1) ... [2020-09-25 14:39:48,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:48" (1/1) ... [2020-09-25 14:39:48,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:48" (1/1) ... [2020-09-25 14:39:48,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:48" (1/1) ... [2020-09-25 14:39:48,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:48" (1/1) ... [2020-09-25 14:39:48,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:48" (1/1) ... [2020-09-25 14:39:48,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:39:48,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:39:48,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:39:48,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:39:48,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:39:48,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:39:48,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:39:48,604 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:39:48,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:39:48,604 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:39:48,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:39:48,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:39:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:39:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:39:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:39:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:39:49,939 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:39:49,940 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:39:49,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:39:49 BoogieIcfgContainer [2020-09-25 14:39:49,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:39:49,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:39:49,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:39:49,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:39:49,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:39:47" (1/3) ... [2020-09-25 14:39:49,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2663cd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:39:49, skipping insertion in model container [2020-09-25 14:39:49,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:48" (2/3) ... [2020-09-25 14:39:49,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2663cd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:39:49, skipping insertion in model container [2020-09-25 14:39:49,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:39:49" (3/3) ... [2020-09-25 14:39:49,961 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label32.c [2020-09-25 14:39:49,973 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:39:49,985 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:39:50,009 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:39:50,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:39:50,045 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:39:50,045 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:39:50,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:39:50,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:39:50,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:39:50,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:39:50,046 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:39:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:39:50,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 14:39:50,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:50,103 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 14:39:50,104 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:50,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:50,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1568421906, now seen corresponding path program 1 times [2020-09-25 14:39:50,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:50,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596110015] [2020-09-25 14:39:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:53,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:54,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:55,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:55,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 14:39:55,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:39:55,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 14:39:55,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:55,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:55,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:39:55,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:39:55,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 14:39:55,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:39:55,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:55,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:55,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:55,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:55,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:39:55,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:55,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:39:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:39:55,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596110015] [2020-09-25 14:39:55,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:39:55,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:39:55,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406081950] [2020-09-25 14:39:55,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:39:55,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:55,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:39:55,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:39:55,756 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:39:57,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:57,984 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 14:39:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:39:57,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-09-25 14:39:57,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:58,015 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 14:39:58,015 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 14:39:58,027 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 14:39:58,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 14:39:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 14:39:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 14:39:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 14:39:58,140 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 135 [2020-09-25 14:39:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:58,141 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 14:39:58,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:39:58,141 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 14:39:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 14:39:58,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:58,152 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 14:39:58,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:39:58,153 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:58,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:58,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1651782903, now seen corresponding path program 1 times [2020-09-25 14:39:58,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:58,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263147387] [2020-09-25 14:39:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:58,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:03,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:03,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 14:40:03,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:40:03,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 14:40:03,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:03,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 14:40:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:40:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-25 14:40:03,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:03,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:03,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:03,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:03,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:03,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:40:03,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:03,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:03,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:40:03,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:40:03,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:03,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:03,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:03,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:03,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:40:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:03,627 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 14:40:03,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263147387] [2020-09-25 14:40:03,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:03,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:03,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449332560] [2020-09-25 14:40:03,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:03,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:03,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:03,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:03,632 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 5 states. [2020-09-25 14:40:05,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:05,902 INFO L93 Difference]: Finished difference Result 1547 states and 2007 transitions. [2020-09-25 14:40:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:05,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-09-25 14:40:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:05,916 INFO L225 Difference]: With dead ends: 1547 [2020-09-25 14:40:05,916 INFO L226 Difference]: Without dead ends: 956 [2020-09-25 14:40:05,920 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 14:40:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-09-25 14:40:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 921. [2020-09-25 14:40:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2020-09-25 14:40:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1108 transitions. [2020-09-25 14:40:05,972 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1108 transitions. Word has length 169 [2020-09-25 14:40:05,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:05,973 INFO L479 AbstractCegarLoop]: Abstraction has 921 states and 1108 transitions. [2020-09-25 14:40:05,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:05,973 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1108 transitions. [2020-09-25 14:40:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 14:40:05,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:05,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:05,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:40:05,978 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:05,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:05,979 INFO L82 PathProgramCache]: Analyzing trace with hash -248690742, now seen corresponding path program 1 times [2020-09-25 14:40:05,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:05,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517901126] [2020-09-25 14:40:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:06,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:06,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:07,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:11,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:11,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 14:40:11,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:40:11,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:11,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 14:40:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 14:40:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:11,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:11,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:11,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:11,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:11,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:40:11,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:11,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:11,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:11,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:11,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:11,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:40:11,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 14:40:11,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:11,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:40:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:11,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517901126] [2020-09-25 14:40:11,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:11,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:11,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596706978] [2020-09-25 14:40:11,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:11,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:11,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:11,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:11,456 INFO L87 Difference]: Start difference. First operand 921 states and 1108 transitions. Second operand 5 states. [2020-09-25 14:40:13,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:13,674 INFO L93 Difference]: Finished difference Result 2447 states and 3033 transitions. [2020-09-25 14:40:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:13,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 14:40:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:13,687 INFO L225 Difference]: With dead ends: 2447 [2020-09-25 14:40:13,688 INFO L226 Difference]: Without dead ends: 1013 [2020-09-25 14:40:13,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-09-25 14:40:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 993. [2020-09-25 14:40:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-09-25 14:40:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1164 transitions. [2020-09-25 14:40:13,745 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1164 transitions. Word has length 173 [2020-09-25 14:40:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:13,747 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1164 transitions. [2020-09-25 14:40:13,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1164 transitions. [2020-09-25 14:40:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 14:40:13,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:13,754 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, 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] [2020-09-25 14:40:13,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:13,754 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash 867866385, now seen corresponding path program 1 times [2020-09-25 14:40:13,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:13,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696639779] [2020-09-25 14:40:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:13,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:18,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 14:40:18,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:40:18,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 14:40:18,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:18,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 14:40:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:40:18,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:18,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:18,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:18,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:40:18,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:18,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:18,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:18,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:18,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:40:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:40:19,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:19,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:19,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 14:40:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:19,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:40:19,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:40:19,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:19,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:40:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 14:40:19,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696639779] [2020-09-25 14:40:19,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:19,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:19,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562297127] [2020-09-25 14:40:19,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:19,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:19,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:19,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:19,116 INFO L87 Difference]: Start difference. First operand 993 states and 1164 transitions. Second operand 5 states. [2020-09-25 14:40:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:21,017 INFO L93 Difference]: Finished difference Result 2457 states and 2976 transitions. [2020-09-25 14:40:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:21,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-09-25 14:40:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:21,027 INFO L225 Difference]: With dead ends: 2457 [2020-09-25 14:40:21,027 INFO L226 Difference]: Without dead ends: 1331 [2020-09-25 14:40:21,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 14:40:21,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2020-09-25 14:40:21,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1294. [2020-09-25 14:40:21,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1294 states. [2020-09-25 14:40:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1500 transitions. [2020-09-25 14:40:21,094 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1500 transitions. Word has length 199 [2020-09-25 14:40:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:21,095 INFO L479 AbstractCegarLoop]: Abstraction has 1294 states and 1500 transitions. [2020-09-25 14:40:21,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1500 transitions. [2020-09-25 14:40:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 14:40:21,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:21,107 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, 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] [2020-09-25 14:40:21,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:40:21,108 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1247591017, now seen corresponding path program 1 times [2020-09-25 14:40:21,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:21,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907437898] [2020-09-25 14:40:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:22,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:23,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:23,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:23,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:23,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:26,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:26,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 14:40:26,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:40:26,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:40:26,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:26,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-09-25 14:40:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 14:40:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:26,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:26,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:26,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:26,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:26,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:40:26,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:26,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:26,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:26,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:26,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:40:26,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:26,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:40:26,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:26,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:26,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:26,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:26,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:26,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 14:40:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:26,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:26,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:26,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:40:26,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:26,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 14:40:26,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:26,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:26,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:26,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:40:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 14:40:26,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907437898] [2020-09-25 14:40:26,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:26,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:26,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733053001] [2020-09-25 14:40:26,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:26,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:26,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:26,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:26,609 INFO L87 Difference]: Start difference. First operand 1294 states and 1500 transitions. Second operand 5 states. [2020-09-25 14:40:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:28,238 INFO L93 Difference]: Finished difference Result 3188 states and 3819 transitions. [2020-09-25 14:40:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:28,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-09-25 14:40:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:28,248 INFO L225 Difference]: With dead ends: 3188 [2020-09-25 14:40:28,248 INFO L226 Difference]: Without dead ends: 1729 [2020-09-25 14:40:28,254 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 14:40:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2020-09-25 14:40:28,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1559. [2020-09-25 14:40:28,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-09-25 14:40:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 1780 transitions. [2020-09-25 14:40:28,301 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 1780 transitions. Word has length 224 [2020-09-25 14:40:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:28,301 INFO L479 AbstractCegarLoop]: Abstraction has 1559 states and 1780 transitions. [2020-09-25 14:40:28,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:28,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 1780 transitions. [2020-09-25 14:40:28,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 14:40:28,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:28,309 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:28,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:40:28,310 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:28,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:28,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1860720897, now seen corresponding path program 1 times [2020-09-25 14:40:28,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:28,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663574594] [2020-09-25 14:40:28,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:28,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:33,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:33,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 14:40:33,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:40:33,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 14:40:33,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:33,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-09-25 14:40:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:40:33,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:33,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:33,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:33,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:33,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:40:33,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:33,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:33,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:33,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:33,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:33,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 14:40:33,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:33,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:40:33,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:33,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:33,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:33,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 14:40:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:33,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:33,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:33,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:40:33,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:33,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 14:40:33,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:33,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:33,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:33,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:33,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:40:33,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 14:40:33,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663574594] [2020-09-25 14:40:33,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:33,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:40:33,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516482850] [2020-09-25 14:40:33,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:40:33,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:33,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:40:33,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:33,686 INFO L87 Difference]: Start difference. First operand 1559 states and 1780 transitions. Second operand 6 states. [2020-09-25 14:40:35,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:35,846 INFO L93 Difference]: Finished difference Result 3739 states and 4370 transitions. [2020-09-25 14:40:35,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:40:35,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2020-09-25 14:40:35,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:35,848 INFO L225 Difference]: With dead ends: 3739 [2020-09-25 14:40:35,848 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:40:35,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:40:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:40:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:40:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:40:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:40:35,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 250 [2020-09-25 14:40:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:35,858 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:40:35,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:40:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:40:35,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:40:35,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:40:35,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.