/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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:40:10,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:40:10,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:40:10,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:40:10,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:40:10,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:40:10,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:40:10,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:40:10,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:40:10,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:40:10,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:40:10,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:40:10,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:40:10,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:40:10,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:40:10,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:40:10,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:40:10,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:40:10,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:40:10,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:40:10,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:40:10,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:40:10,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:40:10,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:40:10,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:40:10,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:40:10,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:40:10,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:40:10,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:40:10,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:40:10,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:40:10,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:40:10,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:40:10,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:40:10,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:40:10,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:40:10,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:40:10,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:40:10,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:40:10,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:40:10,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:40:10,287 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 21:40:10,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:40:10,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:40:10,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:40:10,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:40:10,339 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:40:10,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:40:10,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:40:10,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:40:10,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:40:10,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:40:10,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:40:10,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:40:10,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:40:10,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:40:10,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:40:10,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:40:10,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:40:10,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:40:10,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:40:10,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:40:10,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:40:10,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:40:10,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:40:10,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:40:10,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:40:10,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:40:10,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:40:10,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:40:10,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:40:10,345 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 21:40:10,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:40:10,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:40:10,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:40:10,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:40:10,810 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:40:10,811 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-24 21:40:10,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85e696f97/0eb068f338da4d42aa0cbd8b4568ad04/FLAG2eb7172c5 [2020-09-24 21:40:11,583 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:40:11,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-24 21:40:11,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85e696f97/0eb068f338da4d42aa0cbd8b4568ad04/FLAG2eb7172c5 [2020-09-24 21:40:11,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85e696f97/0eb068f338da4d42aa0cbd8b4568ad04 [2020-09-24 21:40:11,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:40:11,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:40:11,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:40:11,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:40:11,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:40:11,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:40:11" (1/1) ... [2020-09-24 21:40:11,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674884e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:11, skipping insertion in model container [2020-09-24 21:40:11,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:40:11" (1/1) ... [2020-09-24 21:40:11,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:40:11,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:40:12,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:40:12,456 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:40:12,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:40:12,702 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:40:12,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12 WrapperNode [2020-09-24 21:40:12,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:40:12,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:40:12,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:40:12,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:40:12,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12" (1/1) ... [2020-09-24 21:40:12,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12" (1/1) ... [2020-09-24 21:40:12,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12" (1/1) ... [2020-09-24 21:40:12,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12" (1/1) ... [2020-09-24 21:40:12,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12" (1/1) ... [2020-09-24 21:40:12,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12" (1/1) ... [2020-09-24 21:40:12,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12" (1/1) ... [2020-09-24 21:40:12,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:40:12,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:40:12,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:40:12,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:40:12,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12" (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 21:40:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:40:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:40:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:40:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:40:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:40:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:40:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:40:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:40:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:40:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:40:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:40:14,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:40:14,225 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:40:14,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:40:14 BoogieIcfgContainer [2020-09-24 21:40:14,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:40:14,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:40:14,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:40:14,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:40:14,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:40:11" (1/3) ... [2020-09-24 21:40:14,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:40:14, skipping insertion in model container [2020-09-24 21:40:14,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12" (2/3) ... [2020-09-24 21:40:14,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:40:14, skipping insertion in model container [2020-09-24 21:40:14,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:40:14" (3/3) ... [2020-09-24 21:40:14,246 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-24 21:40:14,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:40:14,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:40:14,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:40:14,344 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:40:14,345 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:40:14,345 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:40:14,345 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:40:14,345 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:40:14,345 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:40:14,345 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:40:14,346 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:40:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:40:14,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 21:40:14,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:14,406 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] [2020-09-24 21:40:14,407 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:14,414 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-24 21:40:14,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:14,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597125458] [2020-09-24 21:40:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:14,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:15,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:16,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:17,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:19,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:19,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 21:40:19,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:40:19,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:40:19,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:40:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:40:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:40:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:40:20,465 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2020-09-24 21:40:20,612 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-09-24 21:40:20,802 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-09-24 21:40:21,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:21,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:21,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:21,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 21:40:21,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:40:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:21,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:21,565 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 21:40:21,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597125458] [2020-09-24 21:40:21,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:40:21,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:40:21,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273506561] [2020-09-24 21:40:21,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:40:21,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:21,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:40:21,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:40:21,600 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:40:22,288 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-09-24 21:40:22,570 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2020-09-24 21:40:22,832 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-09-24 21:40:23,252 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-09-24 21:40:24,096 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-09-24 21:40:24,547 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-09-24 21:40:28,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:28,669 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:40:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:40:28,672 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-09-24 21:40:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:28,721 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:40:28,721 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:40:28,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:40:28,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:40:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:40:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:40:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1147 transitions. [2020-09-24 21:40:28,852 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1147 transitions. Word has length 112 [2020-09-24 21:40:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:28,853 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1147 transitions. [2020-09-24 21:40:28,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:40:28,855 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1147 transitions. [2020-09-24 21:40:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 21:40:28,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:28,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:28,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:40:28,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:28,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:28,874 INFO L82 PathProgramCache]: Analyzing trace with hash 405072826, now seen corresponding path program 1 times [2020-09-24 21:40:28,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:28,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167184848] [2020-09-24 21:40:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:28,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:29,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:29,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:30,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:31,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:32,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:33,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:33,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:33,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 21:40:33,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:40:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:40:33,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:40:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:40:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:40:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:34,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:34,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:34,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:34,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:34,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 21:40:34,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:34,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:34,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:34,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:34,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:34,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:35,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:35,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:40:35,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:35,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:40:35,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:40:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:40:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:35,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 21:40:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:35,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:35,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:35,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 21:40:35,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:35,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:35,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:40:35,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167184848] [2020-09-24 21:40:35,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:35,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:40:35,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055206627] [2020-09-24 21:40:35,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:40:35,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:35,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:40:35,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:40:35,759 INFO L87 Difference]: Start difference. First operand 985 states and 1147 transitions. Second operand 23 states. [2020-09-24 21:40:36,561 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-09-24 21:40:40,092 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-09-24 21:40:40,427 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-09-24 21:40:41,240 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-09-24 21:40:41,618 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-09-24 21:40:41,872 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-09-24 21:40:42,428 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-09-24 21:40:42,649 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-09-24 21:40:43,052 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 21:40:43,909 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2020-09-24 21:40:44,957 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-09-24 21:40:45,335 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2020-09-24 21:40:45,582 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-09-24 21:40:46,348 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2020-09-24 21:40:46,508 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-09-24 21:40:46,796 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-09-24 21:40:47,120 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2020-09-24 21:40:48,233 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-24 21:40:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:50,083 INFO L93 Difference]: Finished difference Result 3508 states and 4490 transitions. [2020-09-24 21:40:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-24 21:40:50,084 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 150 [2020-09-24 21:40:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:50,111 INFO L225 Difference]: With dead ends: 3508 [2020-09-24 21:40:50,112 INFO L226 Difference]: Without dead ends: 2611 [2020-09-24 21:40:50,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=849, Invalid=2691, Unknown=0, NotChecked=0, Total=3540 [2020-09-24 21:40:50,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-09-24 21:40:50,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2185. [2020-09-24 21:40:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2185 states. [2020-09-24 21:40:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 2647 transitions. [2020-09-24 21:40:50,237 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 2647 transitions. Word has length 150 [2020-09-24 21:40:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:50,239 INFO L479 AbstractCegarLoop]: Abstraction has 2185 states and 2647 transitions. [2020-09-24 21:40:50,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:40:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 2647 transitions. [2020-09-24 21:40:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 21:40:50,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:50,251 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:50,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:40:50,252 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:50,253 INFO L82 PathProgramCache]: Analyzing trace with hash -276939960, now seen corresponding path program 1 times [2020-09-24 21:40:50,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:50,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075972860] [2020-09-24 21:40:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:50,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:50,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:50,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:52,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:55,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:55,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 21:40:55,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:40:55,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:40:55,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:55,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:40:55,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:40:55,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:40:55,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:55,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:55,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:55,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:55,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:40:55,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:40:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:55,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:55,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:55,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:55,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:55,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:55,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 21:40:55,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:40:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:55,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 21:40:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:55,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:55,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:55,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 21:40:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:40:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:40:55,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075972860] [2020-09-24 21:40:55,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:55,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:40:55,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232817769] [2020-09-24 21:40:55,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:40:55,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:55,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:40:55,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:40:55,696 INFO L87 Difference]: Start difference. First operand 2185 states and 2647 transitions. Second operand 8 states. [2020-09-24 21:40:58,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:58,247 INFO L93 Difference]: Finished difference Result 5525 states and 7061 transitions. [2020-09-24 21:40:58,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:40:58,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-09-24 21:40:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:58,268 INFO L225 Difference]: With dead ends: 5525 [2020-09-24 21:40:58,268 INFO L226 Difference]: Without dead ends: 3428 [2020-09-24 21:40:58,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:40:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2020-09-24 21:40:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 3312. [2020-09-24 21:40:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2020-09-24 21:40:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4080 transitions. [2020-09-24 21:40:58,383 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4080 transitions. Word has length 154 [2020-09-24 21:40:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:58,383 INFO L479 AbstractCegarLoop]: Abstraction has 3312 states and 4080 transitions. [2020-09-24 21:40:58,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:40:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4080 transitions. [2020-09-24 21:40:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 21:40:58,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:58,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:58,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:40:58,396 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:58,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2004739372, now seen corresponding path program 1 times [2020-09-24 21:40:58,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:58,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766201341] [2020-09-24 21:40:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:59,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:59,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking...