/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:06:27,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:06:27,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:06:28,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:06:28,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:06:28,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:06:28,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:28,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:28,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:28,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:28,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:28,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:28,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:28,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:28,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:28,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:28,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:28,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:28,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:28,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:28,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:28,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:28,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:28,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:28,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:28,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:28,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:28,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:28,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:28,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:28,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:28,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:28,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:28,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:28,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:28,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:28,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:28,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:28,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:28,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:28,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:28,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:06:28,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:28,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:28,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:28,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:28,113 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:28,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:28,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:28,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:28,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:28,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:28,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:28,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:28,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:28,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:28,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:28,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:28,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:28,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:28,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:28,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:28,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:28,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:28,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:28,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:28,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:28,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:28,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:28,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:28,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:28,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:06:28,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:28,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:28,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:28,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:28,587 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:28,589 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 10:06:28,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/638878585/95a29cfc0560471081c90827e707e0b6/FLAG001525d9f [2020-09-25 10:06:29,361 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:29,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 10:06:29,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/638878585/95a29cfc0560471081c90827e707e0b6/FLAG001525d9f [2020-09-25 10:06:29,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/638878585/95a29cfc0560471081c90827e707e0b6 [2020-09-25 10:06:29,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:29,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:29,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:29,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:29,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:29,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:29" (1/1) ... [2020-09-25 10:06:29,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:29, skipping insertion in model container [2020-09-25 10:06:29,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:29" (1/1) ... [2020-09-25 10:06:29,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:29,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:30,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:30,270 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:30,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:30,478 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:30,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:30 WrapperNode [2020-09-25 10:06:30,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:30,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:30,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:30,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:30,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:30" (1/1) ... [2020-09-25 10:06:30,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:30" (1/1) ... [2020-09-25 10:06:30,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:30" (1/1) ... [2020-09-25 10:06:30,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:30" (1/1) ... [2020-09-25 10:06:30,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:30" (1/1) ... [2020-09-25 10:06:30,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:30" (1/1) ... [2020-09-25 10:06:30,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:30" (1/1) ... [2020-09-25 10:06:30,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:30,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:30,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:30,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:30,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:32,110 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:32,111 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:32,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:32 BoogieIcfgContainer [2020-09-25 10:06:32,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:32,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:32,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:32,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:32,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:29" (1/3) ... [2020-09-25 10:06:32,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:32, skipping insertion in model container [2020-09-25 10:06:32,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:30" (2/3) ... [2020-09-25 10:06:32,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:32, skipping insertion in model container [2020-09-25 10:06:32,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:32" (3/3) ... [2020-09-25 10:06:32,131 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2020-09-25 10:06:32,144 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:32,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:32,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:32,221 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:32,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:32,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:32,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:32,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:32,222 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:32,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:32,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 10:06:32,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:32,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:32,287 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:32,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:32,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1844135333, now seen corresponding path program 1 times [2020-09-25 10:06:32,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:32,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 10:06:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:33,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:34,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:37,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:37,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 10:06:37,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:06:37,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:06:37,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:37,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:06:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 10:06:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:06:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:37,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:38,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:38,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:38,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:06:38,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:38,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:38,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:38,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:06:38,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:38,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 10:06:38,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:38,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:06:38,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671082900] [2020-09-25 10:06:38,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:06:38,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:38,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:06:38,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:06:38,132 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 10:06:40,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:40,419 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 10:06:40,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:40,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 10:06:40,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:40,462 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 10:06:40,462 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 10:06:40,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 10:06:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 10:06:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 10:06:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 10:06:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 10:06:40,578 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 155 [2020-09-25 10:06:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:40,579 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 10:06:40,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:06:40,580 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 10:06:40,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 10:06:40,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:40,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:40,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:40,589 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:40,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1702754775, now seen corresponding path program 1 times [2020-09-25 10:06:40,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:40,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104569627] [2020-09-25 10:06:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:40,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:41,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:41,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:45,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 10:06:45,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:06:45,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:06:45,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:45,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:06:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:06:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 10:06:45,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:46,459 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-09-25 10:06:46,614 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-09-25 10:06:46,766 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-09-25 10:06:46,923 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 34 [2020-09-25 10:06:47,086 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 32 [2020-09-25 10:06:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:47,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:47,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:47,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:47,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:06:47,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:47,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:06:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:47,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:47,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:06:47,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 10:06:47,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:47,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:06:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:06:47,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:47,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104569627] [2020-09-25 10:06:47,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:47,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 10:06:47,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272028229] [2020-09-25 10:06:47,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 10:06:47,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:47,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 10:06:47,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:06:47,670 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 20 states. [2020-09-25 10:06:48,824 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 10:06:49,089 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 10:06:49,429 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 10:06:49,769 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 10:06:50,157 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-09-25 10:06:50,836 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-09-25 10:06:51,226 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-09-25 10:06:51,408 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-09-25 10:06:52,193 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 10:06:52,998 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-09-25 10:06:53,309 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-09-25 10:06:53,684 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-09-25 10:06:54,000 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-25 10:06:54,710 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 10:06:55,362 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-09-25 10:06:55,798 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 10:06:56,360 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 10:06:57,072 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-25 10:06:57,767 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-09-25 10:06:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:58,866 INFO L93 Difference]: Finished difference Result 1970 states and 2592 transitions. [2020-09-25 10:06:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 10:06:58,867 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 177 [2020-09-25 10:06:58,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:58,877 INFO L225 Difference]: With dead ends: 1970 [2020-09-25 10:06:58,877 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 10:06:58,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=872, Invalid=2208, Unknown=0, NotChecked=0, Total=3080 [2020-09-25 10:06:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 10:06:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1280. [2020-09-25 10:06:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-09-25 10:06:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1534 transitions. [2020-09-25 10:06:58,943 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1534 transitions. Word has length 177 [2020-09-25 10:06:58,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:58,944 INFO L479 AbstractCegarLoop]: Abstraction has 1280 states and 1534 transitions. [2020-09-25 10:06:58,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 10:06:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1534 transitions. [2020-09-25 10:06:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 10:06:58,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:58,951 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:58,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:06:58,951 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:58,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:58,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1404322234, now seen corresponding path program 1 times [2020-09-25 10:06:58,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:58,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205174582] [2020-09-25 10:06:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:59,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:00,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:04,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:04,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 10:07:04,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:04,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:07:04,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:04,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 10:07:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 10:07:04,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:04,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:04,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:04,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:04,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:04,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:07:04,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:04,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:04,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:04,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:04,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:07:04,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:04,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:07:04,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:04,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:07:04,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:04,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205174582] [2020-09-25 10:07:04,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:04,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:07:04,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719536927] [2020-09-25 10:07:04,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:07:04,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:04,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:07:04,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:07:04,275 INFO L87 Difference]: Start difference. First operand 1280 states and 1534 transitions. Second operand 5 states. [2020-09-25 10:07:06,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:06,139 INFO L93 Difference]: Finished difference Result 2993 states and 3728 transitions. [2020-09-25 10:07:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:07:06,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-09-25 10:07:06,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:06,154 INFO L225 Difference]: With dead ends: 2993 [2020-09-25 10:07:06,154 INFO L226 Difference]: Without dead ends: 1737 [2020-09-25 10:07:06,160 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 10:07:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2020-09-25 10:07:06,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1709. [2020-09-25 10:07:06,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-09-25 10:07:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2105 transitions. [2020-09-25 10:07:06,259 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2105 transitions. Word has length 184 [2020-09-25 10:07:06,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:06,260 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2105 transitions. [2020-09-25 10:07:06,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:07:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2105 transitions. [2020-09-25 10:07:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 10:07:06,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:06,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:06,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:06,272 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:06,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:06,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1146667258, now seen corresponding path program 1 times [2020-09-25 10:07:06,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:06,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111556523] [2020-09-25 10:07:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:06,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:11,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:11,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 10:07:11,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:07:11,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:07:11,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:11,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:07:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 10:07:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:07:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:11,790 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-09-25 10:07:12,175 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-09-25 10:07:12,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:12,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:12,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:12,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:12,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:07:12,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:12,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:12,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:12,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:12,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:12,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:12,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:12,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:12,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:07:12,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:12,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:12,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:12,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:12,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:12,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:12,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:12,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:07:12,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:12,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 10:07:12,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:12,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 10:07:13,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111556523] [2020-09-25 10:07:13,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:13,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:07:13,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167605931] [2020-09-25 10:07:13,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:07:13,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:13,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:07:13,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:07:13,082 INFO L87 Difference]: Start difference. First operand 1709 states and 2105 transitions. Second operand 21 states. [2020-09-25 10:07:14,834 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 10:07:15,448 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 10:07:15,776 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 10:07:15,953 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 10:07:16,289 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 10:07:16,459 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 10:07:16,630 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 10:07:17,212 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-25 10:07:17,381 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-25 10:07:17,668 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-25 10:07:18,008 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 10:07:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:18,449 INFO L93 Difference]: Finished difference Result 3660 states and 4582 transitions. [2020-09-25 10:07:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 10:07:18,450 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 209 [2020-09-25 10:07:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:18,451 INFO L225 Difference]: With dead ends: 3660 [2020-09-25 10:07:18,451 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:07:18,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=468, Invalid=864, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 10:07:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:07:18,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:07:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:07:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:07:18,464 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 209 [2020-09-25 10:07:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:18,464 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:07:18,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:07:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:07:18,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:07:18,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:07:18,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:07:19,037 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 35