/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=LOWLEXORDER --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:40:16,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:40:16,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:40:16,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:40:16,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:40:16,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:40:16,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:40:16,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:40:16,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:40:16,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:40:16,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:40:16,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:40:16,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:40:16,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:40:16,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:40:16,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:40:16,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:40:16,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:40:16,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:40:16,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:40:16,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:40:16,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:40:16,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:40:16,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:40:16,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:40:16,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:40:16,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:40:16,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:40:16,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:40:16,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:40:16,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:40:16,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:40:16,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:40:16,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:40:16,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:40:16,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:40:16,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:40:16,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:40:16,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:40:16,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:40:16,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:40:16,316 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 [2020-09-24 21:40:16,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:40:16,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:40:16,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:40:16,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:40:16,344 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:40:16,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:40:16,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:40:16,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:40:16,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:40:16,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:40:16,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:40:16,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:40:16,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:40:16,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:40:16,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:40:16,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:40:16,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:40:16,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:40:16,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:40:16,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:40:16,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:40:16,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:40:16,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:40:16,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:40:16,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:40:16,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:40:16,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:40:16,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:40:16,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:40:16,349 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:40:16,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:40:16,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:40:16,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:40:16,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:40:16,843 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:40:16,844 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-24 21:40:16,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8c818239/d1745a38483e4752b55821bef2b84073/FLAG63a3115a8 [2020-09-24 21:40:17,505 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:40:17,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-24 21:40:17,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8c818239/d1745a38483e4752b55821bef2b84073/FLAG63a3115a8 [2020-09-24 21:40:17,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8c818239/d1745a38483e4752b55821bef2b84073 [2020-09-24 21:40:17,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:40:17,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:40:17,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:40:17,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:40:17,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:40:17,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:40:17" (1/1) ... [2020-09-24 21:40:17,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:17, skipping insertion in model container [2020-09-24 21:40:17,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:40:17" (1/1) ... [2020-09-24 21:40:17,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:40:17,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:40:18,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:40:18,304 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:40:18,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:40:18,585 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:40:18,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:18 WrapperNode [2020-09-24 21:40:18,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:40:18,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:40:18,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:40:18,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:40:18,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:18" (1/1) ... [2020-09-24 21:40:18,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:18" (1/1) ... [2020-09-24 21:40:18,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:18" (1/1) ... [2020-09-24 21:40:18,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:18" (1/1) ... [2020-09-24 21:40:18,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:18" (1/1) ... [2020-09-24 21:40:18,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:18" (1/1) ... [2020-09-24 21:40:18,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:18" (1/1) ... [2020-09-24 21:40:18,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:40:18,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:40:18,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:40:18,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:40:18,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:18" (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 [2020-09-24 21:40:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:40:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:40:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:40:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:40:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:40:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:40:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:40:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:40:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:40:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:40:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:40:20,095 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:40:20,095 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:40:20,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:40:20 BoogieIcfgContainer [2020-09-24 21:40:20,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:40:20,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:40:20,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:40:20,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:40:20,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:40:17" (1/3) ... [2020-09-24 21:40:20,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccd0667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:40:20, skipping insertion in model container [2020-09-24 21:40:20,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:18" (2/3) ... [2020-09-24 21:40:20,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccd0667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:40:20, skipping insertion in model container [2020-09-24 21:40:20,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:40:20" (3/3) ... [2020-09-24 21:40:20,115 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-24 21:40:20,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:40:20,138 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:40:20,164 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:40:20,198 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:40:20,198 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:40:20,198 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:40:20,198 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:40:20,198 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:40:20,199 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:40:20,199 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:40:20,199 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:40:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:40:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:40:20,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:20,253 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] [2020-09-24 21:40:20,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:20,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:20,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1414748743, now seen corresponding path program 1 times [2020-09-24 21:40:20,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:20,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472671411] [2020-09-24 21:40:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:21,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:24,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:25,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:25,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 21:40:25,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:40:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 21:40:25,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:40:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:40:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:40:25,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:40:26,115 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-09-24 21:40:26,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:26,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:26,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:26,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:26,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:26,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 21:40:26,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:40:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:40:26,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472671411] [2020-09-24 21:40:26,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:40:26,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:40:26,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170809029] [2020-09-24 21:40:26,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:40:26,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:26,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:40:26,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:40:26,999 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:40:27,422 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-24 21:40:27,661 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 21:40:27,922 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-09-24 21:40:28,203 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-09-24 21:40:28,626 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-09-24 21:40:29,665 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-09-24 21:40:30,124 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2020-09-24 21:40:31,904 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-09-24 21:40:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:34,648 INFO L93 Difference]: Finished difference Result 1701 states and 2422 transitions. [2020-09-24 21:40:34,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:40:34,650 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 142 [2020-09-24 21:40:34,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:34,675 INFO L225 Difference]: With dead ends: 1701 [2020-09-24 21:40:34,676 INFO L226 Difference]: Without dead ends: 1103 [2020-09-24 21:40:34,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=321, Invalid=735, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 21:40:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-09-24 21:40:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 985. [2020-09-24 21:40:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:40:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1149 transitions. [2020-09-24 21:40:34,816 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1149 transitions. Word has length 142 [2020-09-24 21:40:34,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:34,817 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1149 transitions. [2020-09-24 21:40:34,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:40:34,818 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1149 transitions. [2020-09-24 21:40:34,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 21:40:34,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:34,825 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:40:34,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:40:34,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:34,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:34,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1253428644, now seen corresponding path program 1 times [2020-09-24 21:40:34,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:34,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593364906] [2020-09-24 21:40:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:34,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:35,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:35,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:39,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:39,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 21:40:39,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:40:39,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:40:39,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 21:40:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:40:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 21:40:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:40,453 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-09-24 21:40:40,591 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-09-24 21:40:41,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:41,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:41,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:41,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:41,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:41,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 21:40:41,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:40:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:41,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:41,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:41,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:41,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:40:41,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:41,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 21:40:41,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:41,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:40:41,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:41,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:40:41,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:41,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:40:41,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593364906] [2020-09-24 21:40:41,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:41,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 21:40:41,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376106692] [2020-09-24 21:40:41,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 21:40:41,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:41,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 21:40:41,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:40:41,854 INFO L87 Difference]: Start difference. First operand 985 states and 1149 transitions. Second operand 21 states. [2020-09-24 21:40:42,603 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2020-09-24 21:40:42,888 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 94 [2020-09-24 21:40:43,245 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 114 [2020-09-24 21:40:44,274 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 111 [2020-09-24 21:40:44,642 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-09-24 21:40:45,528 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2020-09-24 21:40:46,433 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 108 [2020-09-24 21:40:46,970 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 93 [2020-09-24 21:40:47,504 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 105 [2020-09-24 21:40:48,041 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 90 [2020-09-24 21:40:48,493 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 102 [2020-09-24 21:40:48,878 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 97 [2020-09-24 21:40:49,144 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2020-09-24 21:40:49,498 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 86 [2020-09-24 21:40:49,815 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2020-09-24 21:40:50,154 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-09-24 21:40:51,340 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 92 [2020-09-24 21:40:51,851 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2020-09-24 21:40:52,287 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2020-09-24 21:40:52,552 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 81 [2020-09-24 21:40:52,823 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2020-09-24 21:40:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:54,276 INFO L93 Difference]: Finished difference Result 2265 states and 2658 transitions. [2020-09-24 21:40:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 21:40:54,277 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 159 [2020-09-24 21:40:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:54,289 INFO L225 Difference]: With dead ends: 2265 [2020-09-24 21:40:54,289 INFO L226 Difference]: Without dead ends: 1368 [2020-09-24 21:40:54,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=719, Invalid=1831, Unknown=0, NotChecked=0, Total=2550 [2020-09-24 21:40:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-09-24 21:40:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1212. [2020-09-24 21:40:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1212 states. [2020-09-24 21:40:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1410 transitions. [2020-09-24 21:40:54,371 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1410 transitions. Word has length 159 [2020-09-24 21:40:54,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:54,373 INFO L479 AbstractCegarLoop]: Abstraction has 1212 states and 1410 transitions. [2020-09-24 21:40:54,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 21:40:54,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1410 transitions. [2020-09-24 21:40:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 21:40:54,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:54,380 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:40:54,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:40:54,381 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:54,381 INFO L82 PathProgramCache]: Analyzing trace with hash -769516074, now seen corresponding path program 1 times [2020-09-24 21:40:54,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:54,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108354416] [2020-09-24 21:40:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:54,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:54,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:57,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:59,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:59,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 21:40:59,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:40:59,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-09-24 21:40:59,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:59,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:40:59,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:40:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:40:59,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:59,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:59,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:59,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:59,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:59,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 21:40:59,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:59,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:59,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:59,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:59,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:59,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:59,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:59,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:59,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:59,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:59,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 21:40:59,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:40:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:59,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:41:00,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108354416] [2020-09-24 21:41:00,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:41:00,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:41:00,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324318943] [2020-09-24 21:41:00,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:41:00,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:00,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:41:00,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:41:00,273 INFO L87 Difference]: Start difference. First operand 1212 states and 1410 transitions. Second operand 13 states. [2020-09-24 21:41:01,526 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-09-24 21:41:02,121 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-09-24 21:41:02,315 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-09-24 21:41:02,529 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-09-24 21:41:04,114 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-09-24 21:41:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:41:07,278 INFO L93 Difference]: Finished difference Result 3254 states and 3950 transitions. [2020-09-24 21:41:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 21:41:07,279 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-09-24 21:41:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:41:07,291 INFO L225 Difference]: With dead ends: 3254 [2020-09-24 21:41:07,292 INFO L226 Difference]: Without dead ends: 1573 [2020-09-24 21:41:07,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=377, Invalid=883, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 21:41:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2020-09-24 21:41:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1347. [2020-09-24 21:41:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2020-09-24 21:41:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1551 transitions. [2020-09-24 21:41:07,337 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1551 transitions. Word has length 163 [2020-09-24 21:41:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:41:07,337 INFO L479 AbstractCegarLoop]: Abstraction has 1347 states and 1551 transitions. [2020-09-24 21:41:07,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:41:07,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1551 transitions. [2020-09-24 21:41:07,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 21:41:07,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:07,342 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:41:07,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:41:07,343 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:07,343 INFO L82 PathProgramCache]: Analyzing trace with hash 914952008, now seen corresponding path program 1 times [2020-09-24 21:41:07,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:07,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561840939] [2020-09-24 21:41:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:07,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:09,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking...