/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:45,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:45,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:45,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:45,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:45,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:45,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:45,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:45,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:45,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:45,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:45,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:45,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:45,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:45,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:45,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:45,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:45,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:45,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:45,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:45,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:45,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:45,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:45,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:45,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:45,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:45,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:45,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:45,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:45,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:45,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:45,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:45,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:45,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:45,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:45,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:45,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:45,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:45,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:45,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:45,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:45,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:42:45,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:45,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:45,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:45,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:45,288 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:45,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:45,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:45,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:45,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:45,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:45,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:45,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:45,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:45,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:45,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:45,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:45,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:45,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:45,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:45,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:45,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:45,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:45,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:45,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:45,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:45,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:45,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:45,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:45,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:45,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:42:45,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:45,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:45,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:45,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:45,840 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:45,841 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 14:42:45,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de71acf16/accb9a7b23b648fc99634f1553208b39/FLAGeeeb16722 [2020-09-25 14:42:46,580 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:46,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 14:42:46,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de71acf16/accb9a7b23b648fc99634f1553208b39/FLAGeeeb16722 [2020-09-25 14:42:46,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de71acf16/accb9a7b23b648fc99634f1553208b39 [2020-09-25 14:42:46,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:46,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:46,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:46,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:46,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:46,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:46" (1/1) ... [2020-09-25 14:42:46,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:46, skipping insertion in model container [2020-09-25 14:42:46,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:46" (1/1) ... [2020-09-25 14:42:46,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:46,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:47,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:47,494 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:47,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:47,744 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:47,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:47 WrapperNode [2020-09-25 14:42:47,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:47,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:47,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:47,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:47,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:47" (1/1) ... [2020-09-25 14:42:47,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:47" (1/1) ... [2020-09-25 14:42:47,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:47" (1/1) ... [2020-09-25 14:42:47,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:47" (1/1) ... [2020-09-25 14:42:47,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:47" (1/1) ... [2020-09-25 14:42:47,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:47" (1/1) ... [2020-09-25 14:42:47,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:47" (1/1) ... [2020-09-25 14:42:47,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:47,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:47,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:47,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:47,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:47,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:47,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:47,961 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:47,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:49,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:49,505 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:49,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:49 BoogieIcfgContainer [2020-09-25 14:42:49,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:49,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:49,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:49,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:49,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:46" (1/3) ... [2020-09-25 14:42:49,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:49, skipping insertion in model container [2020-09-25 14:42:49,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:47" (2/3) ... [2020-09-25 14:42:49,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:49, skipping insertion in model container [2020-09-25 14:42:49,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:49" (3/3) ... [2020-09-25 14:42:49,525 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-25 14:42:49,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:49,552 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:49,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:49,611 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:49,612 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:49,612 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:49,612 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:49,612 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:49,612 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:49,613 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:49,613 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 14:42:49,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:49,659 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] [2020-09-25 14:42:49,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:49,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:49,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-25 14:42:49,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:49,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 14:42:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:50,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:50,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-09-25 14:42:50,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:50,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:50,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:50,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:50,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 14:42:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:42:50,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:50,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:50,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:50,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:42:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:50,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:50,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 14:42:50,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:50,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:42:51,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733410808] [2020-09-25 14:42:51,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:42:51,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:51,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:42:51,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:42:51,031 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:52,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:52,969 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 14:42:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:52,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-25 14:42:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:52,995 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 14:42:52,995 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 14:42:53,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 14:42:53,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 14:42:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 14:42:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 14:42:53,133 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-25 14:42:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:53,134 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 14:42:53,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:53,135 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 14:42:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 14:42:53,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:53,144 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:53,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:53,144 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:53,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:53,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-25 14:42:53,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:53,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501612625] [2020-09-25 14:42:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:53,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:53,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:53,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 14:42:55,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2445 [2020-09-25 14:42:55,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:42:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:55,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:55,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:55,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:42:55,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:55,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:55,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:55,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:55,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:55,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 14:42:55,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:55,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:56,092 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:56,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501612625] [2020-09-25 14:42:56,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:56,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:56,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354319719] [2020-09-25 14:42:56,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:56,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:56,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:56,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:56,098 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 14:42:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:58,722 INFO L93 Difference]: Finished difference Result 1503 states and 1930 transitions. [2020-09-25 14:42:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:42:58,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 14:42:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:58,730 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 14:42:58,731 INFO L226 Difference]: Without dead ends: 975 [2020-09-25 14:42:58,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-25 14:42:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 892. [2020-09-25 14:42:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-09-25 14:42:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1129 transitions. [2020-09-25 14:42:58,803 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1129 transitions. Word has length 156 [2020-09-25 14:42:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:58,804 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1129 transitions. [2020-09-25 14:42:58,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:58,804 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1129 transitions. [2020-09-25 14:42:58,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 14:42:58,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:58,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:58,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:58,817 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:58,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:58,818 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-25 14:42:58,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:58,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004397136] [2020-09-25 14:42:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:58,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:03,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:03,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 14:43:03,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:43:03,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:03,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 14:43:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:04,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:04,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:04,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:04,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:04,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:43:04,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:04,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:04,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:04,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:04,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:04,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:04,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:04,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:04,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 14:43:04,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:04,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:04,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004397136] [2020-09-25 14:43:04,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:04,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:04,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829047774] [2020-09-25 14:43:04,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:04,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:04,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:04,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:04,396 INFO L87 Difference]: Start difference. First operand 892 states and 1129 transitions. Second operand 8 states. [2020-09-25 14:43:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:08,113 INFO L93 Difference]: Finished difference Result 2723 states and 3664 transitions. [2020-09-25 14:43:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:43:08,114 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 14:43:08,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:08,137 INFO L225 Difference]: With dead ends: 2723 [2020-09-25 14:43:08,137 INFO L226 Difference]: Without dead ends: 1846 [2020-09-25 14:43:08,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:43:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-09-25 14:43:08,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1720. [2020-09-25 14:43:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1720 states. [2020-09-25 14:43:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2259 transitions. [2020-09-25 14:43:08,270 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2259 transitions. Word has length 165 [2020-09-25 14:43:08,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:08,279 INFO L479 AbstractCegarLoop]: Abstraction has 1720 states and 2259 transitions. [2020-09-25 14:43:08,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2259 transitions. [2020-09-25 14:43:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 14:43:08,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:08,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:08,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:08,288 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:08,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:08,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1256012571, now seen corresponding path program 1 times [2020-09-25 14:43:08,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:08,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018444700] [2020-09-25 14:43:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:11,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:11,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 14:43:11,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3433 [2020-09-25 14:43:11,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:11,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:43:11,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:11,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:11,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:11,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:11,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:11,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:43:11,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:11,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:11,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:11,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:12,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 14:43:12,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:12,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 14:43:12,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:12,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:43:12,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:12,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018444700] [2020-09-25 14:43:12,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:12,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:12,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52670756] [2020-09-25 14:43:12,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:12,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:12,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:12,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:12,279 INFO L87 Difference]: Start difference. First operand 1720 states and 2259 transitions. Second operand 7 states. [2020-09-25 14:43:14,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:14,599 INFO L93 Difference]: Finished difference Result 4315 states and 6020 transitions. [2020-09-25 14:43:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:14,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-25 14:43:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:14,620 INFO L225 Difference]: With dead ends: 4315 [2020-09-25 14:43:14,621 INFO L226 Difference]: Without dead ends: 2760 [2020-09-25 14:43:14,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2020-09-25 14:43:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2672. [2020-09-25 14:43:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2672 states. [2020-09-25 14:43:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3384 transitions. [2020-09-25 14:43:14,737 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3384 transitions. Word has length 167 [2020-09-25 14:43:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:14,738 INFO L479 AbstractCegarLoop]: Abstraction has 2672 states and 3384 transitions. [2020-09-25 14:43:14,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:14,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3384 transitions. [2020-09-25 14:43:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 14:43:14,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:14,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:14,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:14,746 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:14,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1504222835, now seen corresponding path program 1 times [2020-09-25 14:43:14,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:14,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182201974] [2020-09-25 14:43:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:14,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:19,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:19,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 14:43:19,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:43:19,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:19,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 14:43:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:19,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:19,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:19,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:19,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:43:19,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:19,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:19,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:20,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:20,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:20,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 14:43:20,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:20,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:20,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:20,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:20,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:20,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:20,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 14:43:20,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:20,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:20,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:20,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:20,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 123 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:43:20,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182201974] [2020-09-25 14:43:20,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:20,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:43:20,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284089152] [2020-09-25 14:43:20,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:43:20,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:20,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:43:20,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:43:20,577 INFO L87 Difference]: Start difference. First operand 2672 states and 3384 transitions. Second operand 9 states. [2020-09-25 14:43:24,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:24,059 INFO L93 Difference]: Finished difference Result 5902 states and 7702 transitions. [2020-09-25 14:43:24,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:43:24,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 244 [2020-09-25 14:43:24,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:24,083 INFO L225 Difference]: With dead ends: 5902 [2020-09-25 14:43:24,083 INFO L226 Difference]: Without dead ends: 3395 [2020-09-25 14:43:24,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:43:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2020-09-25 14:43:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3333. [2020-09-25 14:43:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3333 states. [2020-09-25 14:43:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 4204 transitions. [2020-09-25 14:43:24,239 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 4204 transitions. Word has length 244 [2020-09-25 14:43:24,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:24,240 INFO L479 AbstractCegarLoop]: Abstraction has 3333 states and 4204 transitions. [2020-09-25 14:43:24,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:43:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 4204 transitions. [2020-09-25 14:43:24,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 14:43:24,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:24,250 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:24,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:24,250 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:24,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1938914842, now seen corresponding path program 1 times [2020-09-25 14:43:24,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:24,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997114164] [2020-09-25 14:43:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:24,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:24,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 14:43:29,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:43:29,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:43:29,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:43:29,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:43:29,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 14:43:29,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:29,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:29,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:29,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:43:29,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:29,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:29,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:29,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:29,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:29,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 14:43:29,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:43:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:43:29,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-25 14:43:29,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 14:43:29,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 14:43:30,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997114164] [2020-09-25 14:43:30,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:30,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:30,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308721388] [2020-09-25 14:43:30,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:30,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:30,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:30,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:30,096 INFO L87 Difference]: Start difference. First operand 3333 states and 4204 transitions. Second operand 8 states. [2020-09-25 14:43:33,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:33,478 INFO L93 Difference]: Finished difference Result 7772 states and 10164 transitions. [2020-09-25 14:43:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:33,478 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 248 [2020-09-25 14:43:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:33,507 INFO L225 Difference]: With dead ends: 7772 [2020-09-25 14:43:33,507 INFO L226 Difference]: Without dead ends: 4590 [2020-09-25 14:43:33,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4590 states. [2020-09-25 14:43:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4590 to 4391. [2020-09-25 14:43:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2020-09-25 14:43:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 5523 transitions. [2020-09-25 14:43:33,640 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 5523 transitions. Word has length 248 [2020-09-25 14:43:33,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:33,640 INFO L479 AbstractCegarLoop]: Abstraction has 4391 states and 5523 transitions. [2020-09-25 14:43:33,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:33,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 5523 transitions. [2020-09-25 14:43:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 14:43:33,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:33,648 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:33,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:43:33,648 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:33,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:33,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1668169033, now seen corresponding path program 1 times [2020-09-25 14:43:33,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:33,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990867205] [2020-09-25 14:43:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking...