/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=SMALLEST --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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:41,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:41,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:41,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:41,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:41,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:41,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:41,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:41,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:41,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:41,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:41,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:41,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:41,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:41,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:41,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:41,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:41,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:41,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:41,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:41,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:41,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:41,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:41,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:41,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:41,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:41,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:41,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:41,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:41,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:41,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:41,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:41,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:41,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:41,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:41,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:41,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:41,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:41,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:41,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:41,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:41,315 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 18:19:41,346 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:41,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:41,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:41,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:41,348 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:41,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:41,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:41,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:41,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:41,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:41,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:41,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:41,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:41,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:41,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:41,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:41,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:41,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:41,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:41,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:41,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:41,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:41,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:41,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:41,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:41,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:41,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:41,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:41,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:41,353 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:19:41,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:41,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:41,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:41,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:41,854 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:41,855 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-24 18:19:41,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80cc2e19a/8c0fa9e6a5a94156a10d7cfbfe96ea4b/FLAGe4ef2706b [2020-09-24 18:19:42,551 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:42,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-24 18:19:42,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80cc2e19a/8c0fa9e6a5a94156a10d7cfbfe96ea4b/FLAGe4ef2706b [2020-09-24 18:19:42,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80cc2e19a/8c0fa9e6a5a94156a10d7cfbfe96ea4b [2020-09-24 18:19:42,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:42,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:42,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:42,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:42,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:42,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:42" (1/1) ... [2020-09-24 18:19:42,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12391971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42, skipping insertion in model container [2020-09-24 18:19:42,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:42" (1/1) ... [2020-09-24 18:19:42,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:42,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:43,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:43,542 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:43,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:43,830 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:43,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:43 WrapperNode [2020-09-24 18:19:43,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:43,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:43,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:43,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:43,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:43" (1/1) ... [2020-09-24 18:19:43,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:43" (1/1) ... [2020-09-24 18:19:43,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:43" (1/1) ... [2020-09-24 18:19:43,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:43" (1/1) ... [2020-09-24 18:19:43,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:43" (1/1) ... [2020-09-24 18:19:43,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:43" (1/1) ... [2020-09-24 18:19:43,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:43" (1/1) ... [2020-09-24 18:19:43,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:43,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:43,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:43,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:43,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:43" (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 18:19:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:19:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:19:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:45,418 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:45,418 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:19:45,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:45 BoogieIcfgContainer [2020-09-24 18:19:45,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:45,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:45,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:45,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:45,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:42" (1/3) ... [2020-09-24 18:19:45,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2543eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:45, skipping insertion in model container [2020-09-24 18:19:45,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:43" (2/3) ... [2020-09-24 18:19:45,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2543eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:45, skipping insertion in model container [2020-09-24 18:19:45,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:45" (3/3) ... [2020-09-24 18:19:45,441 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-09-24 18:19:45,456 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:45,472 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:45,495 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:45,538 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:45,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:45,540 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:45,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:45,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:45,540 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:45,541 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:45,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:19:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-24 18:19:45,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:45,602 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] [2020-09-24 18:19:45,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:45,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559547, now seen corresponding path program 1 times [2020-09-24 18:19:45,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:45,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457045145] [2020-09-24 18:19:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:46,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:50,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:50,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 18:19:50,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 18:19:50,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:19:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-24 18:19:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:19:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:51,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:51,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:51,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:51,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:51,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:19:51,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:19:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:51,291 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 18:19:51,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457045145] [2020-09-24 18:19:51,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:51,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:19:51,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658852645] [2020-09-24 18:19:51,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:19:51,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:51,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:19:51,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:19:51,328 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:19:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:53,560 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-24 18:19:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:19:53,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-24 18:19:53,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:53,610 INFO L225 Difference]: With dead ends: 1340 [2020-09-24 18:19:53,610 INFO L226 Difference]: Without dead ends: 741 [2020-09-24 18:19:53,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-24 18:19:53,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-24 18:19:53,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-24 18:19:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-24 18:19:53,760 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 131 [2020-09-24 18:19:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:53,763 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-24 18:19:53,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:19:53,763 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-24 18:19:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 18:19:53,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:53,782 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:19:53,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:19:53,786 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:53,787 INFO L82 PathProgramCache]: Analyzing trace with hash 139765844, now seen corresponding path program 1 times [2020-09-24 18:19:53,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:53,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930091183] [2020-09-24 18:19:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:58,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:58,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 18:19:58,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:19:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:19:58,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 18:19:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 18:19:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:59,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:59,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:59,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:19:59,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:59,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:59,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:19:59,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:19:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:59,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:59,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930091183] [2020-09-24 18:19:59,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:59,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:19:59,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036041466] [2020-09-24 18:19:59,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:59,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:59,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:59,218 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-24 18:20:01,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:01,480 INFO L93 Difference]: Finished difference Result 1688 states and 2060 transitions. [2020-09-24 18:20:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:01,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-24 18:20:01,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:01,488 INFO L225 Difference]: With dead ends: 1688 [2020-09-24 18:20:01,488 INFO L226 Difference]: Without dead ends: 1048 [2020-09-24 18:20:01,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:01,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-09-24 18:20:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 950. [2020-09-24 18:20:01,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-24 18:20:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1156 transitions. [2020-09-24 18:20:01,537 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1156 transitions. Word has length 152 [2020-09-24 18:20:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:01,538 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1156 transitions. [2020-09-24 18:20:01,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1156 transitions. [2020-09-24 18:20:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-24 18:20:01,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:01,545 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 18:20:01,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:01,545 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:01,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:01,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1472828818, now seen corresponding path program 1 times [2020-09-24 18:20:01,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:01,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752533978] [2020-09-24 18:20:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:01,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:01,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:06,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 18:20:06,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:20:06,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 18:20:06,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:20:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:20:06,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:20:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:06,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:06,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:06,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:06,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:20:06,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:06,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:06,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:06,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:06,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:20:06,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:20:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:06,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:06,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:06,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:20:06,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:20:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:06,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752533978] [2020-09-24 18:20:06,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:06,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:06,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060649345] [2020-09-24 18:20:06,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:06,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:06,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:06,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:06,898 INFO L87 Difference]: Start difference. First operand 950 states and 1156 transitions. Second operand 7 states. [2020-09-24 18:20:10,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:10,315 INFO L93 Difference]: Finished difference Result 2103 states and 2622 transitions. [2020-09-24 18:20:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:20:10,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-09-24 18:20:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:10,333 INFO L225 Difference]: With dead ends: 2103 [2020-09-24 18:20:10,334 INFO L226 Difference]: Without dead ends: 1177 [2020-09-24 18:20:10,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:20:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2020-09-24 18:20:10,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1096. [2020-09-24 18:20:10,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2020-09-24 18:20:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1281 transitions. [2020-09-24 18:20:10,389 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1281 transitions. Word has length 173 [2020-09-24 18:20:10,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:10,390 INFO L479 AbstractCegarLoop]: Abstraction has 1096 states and 1281 transitions. [2020-09-24 18:20:10,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:10,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1281 transitions. [2020-09-24 18:20:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-24 18:20:10,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:10,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:10,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:20:10,397 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:10,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:10,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2020064762, now seen corresponding path program 1 times [2020-09-24 18:20:10,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:10,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340556153] [2020-09-24 18:20:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:15,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:15,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-24 18:20:15,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:20:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:20:15,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 18:20:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 18:20:15,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:15,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:15,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:15,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:20:15,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:15,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:15,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:15,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:20:15,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:15,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 18:20:15,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:20:15,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:15,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340556153] [2020-09-24 18:20:15,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:15,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:15,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759886056] [2020-09-24 18:20:15,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:15,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:15,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:15,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:15,721 INFO L87 Difference]: Start difference. First operand 1096 states and 1281 transitions. Second operand 5 states. [2020-09-24 18:20:17,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:17,659 INFO L93 Difference]: Finished difference Result 2587 states and 3100 transitions. [2020-09-24 18:20:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:17,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-24 18:20:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:17,672 INFO L225 Difference]: With dead ends: 2587 [2020-09-24 18:20:17,673 INFO L226 Difference]: Without dead ends: 1664 [2020-09-24 18:20:17,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-09-24 18:20:17,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1481. [2020-09-24 18:20:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-09-24 18:20:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1732 transitions. [2020-09-24 18:20:17,755 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1732 transitions. Word has length 178 [2020-09-24 18:20:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:17,756 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 1732 transitions. [2020-09-24 18:20:17,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1732 transitions. [2020-09-24 18:20:17,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-24 18:20:17,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:17,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:17,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:17,765 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:17,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:17,766 INFO L82 PathProgramCache]: Analyzing trace with hash 370272410, now seen corresponding path program 1 times [2020-09-24 18:20:17,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:17,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529801811] [2020-09-24 18:20:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:17,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:17,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:19,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:22,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 18:20:22,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:20:22,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:20:22,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:22,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:22,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:20:22,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:20:22,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:22,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:22,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:22,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:22,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:22,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:22,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:22,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:22,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:22,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:20:22,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:20:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:20:22,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:23,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:23,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:23,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:20:23,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:23,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 18:20:23,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:23,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:20:23,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:23,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529801811] [2020-09-24 18:20:23,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:23,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:23,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21037532] [2020-09-24 18:20:23,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:23,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:23,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:23,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:23,150 INFO L87 Difference]: Start difference. First operand 1481 states and 1732 transitions. Second operand 7 states. [2020-09-24 18:20:26,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:26,371 INFO L93 Difference]: Finished difference Result 3414 states and 4145 transitions. [2020-09-24 18:20:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:20:26,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-09-24 18:20:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:26,387 INFO L225 Difference]: With dead ends: 3414 [2020-09-24 18:20:26,387 INFO L226 Difference]: Without dead ends: 2106 [2020-09-24 18:20:26,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:20:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-09-24 18:20:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1944. [2020-09-24 18:20:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-09-24 18:20:26,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2266 transitions. [2020-09-24 18:20:26,502 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2266 transitions. Word has length 185 [2020-09-24 18:20:26,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:26,503 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2266 transitions. [2020-09-24 18:20:26,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:26,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2266 transitions. [2020-09-24 18:20:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 18:20:26,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:26,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:20:26,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:20:26,517 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:26,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:26,518 INFO L82 PathProgramCache]: Analyzing trace with hash -807439965, now seen corresponding path program 1 times [2020-09-24 18:20:26,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:26,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515393229] [2020-09-24 18:20:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:26,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking...