/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=0.4 --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/Problem02_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:24,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:24,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:24,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:24,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:24,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:24,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:24,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:24,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:24,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:24,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:24,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:24,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:24,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:24,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:24,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:24,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:24,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:24,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:24,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:24,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:24,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:24,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:24,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:24,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:24,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:24,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:24,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:24,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:24,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:24,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:24,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:24,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:24,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:24,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:24,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:24,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:24,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:24,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:24,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:24,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:24,378 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 13:33:24,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:24,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:24,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:24,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:24,408 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:24,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:24,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:24,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:24,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:24,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:24,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:24,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:24,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:24,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:24,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:24,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:24,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:24,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:24,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:24,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:24,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:24,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:24,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:24,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:24,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:24,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:24,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:24,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:24,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:24,413 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:33:24,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:24,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:24,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:24,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:24,888 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:24,889 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 13:33:24,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d534d9caa/4d96bf4b6f6441dca4a4efde510c69d2/FLAG5252ff381 [2020-09-25 13:33:25,681 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:25,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 13:33:25,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d534d9caa/4d96bf4b6f6441dca4a4efde510c69d2/FLAG5252ff381 [2020-09-25 13:33:25,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d534d9caa/4d96bf4b6f6441dca4a4efde510c69d2 [2020-09-25 13:33:25,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:25,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:25,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:25,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:25,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:25,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:25" (1/1) ... [2020-09-25 13:33:25,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:25, skipping insertion in model container [2020-09-25 13:33:25,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:25" (1/1) ... [2020-09-25 13:33:25,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:26,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:26,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:26,454 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:26,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:26,658 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:26,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:26 WrapperNode [2020-09-25 13:33:26,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:26,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:26,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:26,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:26,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:26" (1/1) ... [2020-09-25 13:33:26,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:26" (1/1) ... [2020-09-25 13:33:26,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:26" (1/1) ... [2020-09-25 13:33:26,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:26" (1/1) ... [2020-09-25 13:33:26,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:26" (1/1) ... [2020-09-25 13:33:26,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:26" (1/1) ... [2020-09-25 13:33:26,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:26" (1/1) ... [2020-09-25 13:33:26,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:26,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:26,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:26,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:26,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:26" (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 13:33:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:28,295 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:28,295 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:28,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:28 BoogieIcfgContainer [2020-09-25 13:33:28,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:28,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:28,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:28,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:28,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:25" (1/3) ... [2020-09-25 13:33:28,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:28, skipping insertion in model container [2020-09-25 13:33:28,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:26" (2/3) ... [2020-09-25 13:33:28,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:28, skipping insertion in model container [2020-09-25 13:33:28,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:28" (3/3) ... [2020-09-25 13:33:28,317 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2020-09-25 13:33:28,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:28,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:28,379 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:28,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:28,431 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:28,432 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:28,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:28,432 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:28,432 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:28,432 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:28,432 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:28,478 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:33:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 13:33:28,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:28,516 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] [2020-09-25 13:33:28,517 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:28,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1064851622, now seen corresponding path program 1 times [2020-09-25 13:33:28,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:28,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652298201] [2020-09-25 13:33:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:28,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:29,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:29,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:29,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:31,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:33,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 13:33:33,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:33:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 13:33:33,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:33,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:33:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 13:33:33,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:33:34,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:34,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:34,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:33:34,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:34,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:33:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:34,172 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 13:33:34,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652298201] [2020-09-25 13:33:34,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:34,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:34,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357700755] [2020-09-25 13:33:34,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:34,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:34,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:34,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:34,207 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:33:36,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:36,399 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 13:33:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:36,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-09-25 13:33:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:36,430 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 13:33:36,430 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 13:33:36,442 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 [2020-09-25 13:33:36,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 13:33:36,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 13:33:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 13:33:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 13:33:36,551 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 129 [2020-09-25 13:33:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:36,552 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 13:33:36,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 13:33:36,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 13:33:36,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:36,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:36,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:36,559 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:36,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:36,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1793356799, now seen corresponding path program 1 times [2020-09-25 13:33:36,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:36,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143055439] [2020-09-25 13:33:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:39,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:41,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:41,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 13:33:41,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:41,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:33:41,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:41,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 13:33:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 13:33:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:33:41,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:41,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:41,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:41,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:41,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:41,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:41,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:41,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:41,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:41,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:33:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:33:41,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:41,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:33:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:41,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143055439] [2020-09-25 13:33:41,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:41,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:33:41,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370615376] [2020-09-25 13:33:41,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:33:41,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:41,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:33:41,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:41,923 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 6 states. [2020-09-25 13:33:44,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:44,597 INFO L93 Difference]: Finished difference Result 1678 states and 2148 transitions. [2020-09-25 13:33:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:33:44,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-25 13:33:44,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:44,607 INFO L225 Difference]: With dead ends: 1678 [2020-09-25 13:33:44,607 INFO L226 Difference]: Without dead ends: 712 [2020-09-25 13:33:44,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:44,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-09-25 13:33:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 702. [2020-09-25 13:33:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-09-25 13:33:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 833 transitions. [2020-09-25 13:33:44,672 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 833 transitions. Word has length 163 [2020-09-25 13:33:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:44,673 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 833 transitions. [2020-09-25 13:33:44,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:33:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 833 transitions. [2020-09-25 13:33:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 13:33:44,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:44,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:44,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:44,677 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:44,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:44,678 INFO L82 PathProgramCache]: Analyzing trace with hash -16369025, now seen corresponding path program 1 times [2020-09-25 13:33:44,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:44,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263397441] [2020-09-25 13:33:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:49,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:49,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 13:33:49,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:49,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 13:33:49,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:49,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:49,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:33:49,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:33:49,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:33:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:50,406 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-09-25 13:33:50,552 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-09-25 13:33:50,683 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 32 [2020-09-25 13:33:50,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:50,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:50,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:50,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:50,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:50,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:33:50,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:50,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:33:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:51,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:33:51,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 13:33:51,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:51,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 13:33:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:51,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263397441] [2020-09-25 13:33:51,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:51,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:33:51,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811799745] [2020-09-25 13:33:51,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:33:51,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:51,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:33:51,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:33:51,575 INFO L87 Difference]: Start difference. First operand 702 states and 833 transitions. Second operand 17 states. [2020-09-25 13:33:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:54,199 INFO L93 Difference]: Finished difference Result 1176 states and 1433 transitions. [2020-09-25 13:33:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:33:54,202 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 164 [2020-09-25 13:33:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:54,208 INFO L225 Difference]: With dead ends: 1176 [2020-09-25 13:33:54,208 INFO L226 Difference]: Without dead ends: 496 [2020-09-25 13:33:54,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:33:54,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-09-25 13:33:54,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 486. [2020-09-25 13:33:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-09-25 13:33:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 544 transitions. [2020-09-25 13:33:54,233 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 544 transitions. Word has length 164 [2020-09-25 13:33:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:54,234 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 544 transitions. [2020-09-25 13:33:54,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:33:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 544 transitions. [2020-09-25 13:33:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 13:33:54,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:54,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:54,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:54,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:54,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:54,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1758187067, now seen corresponding path program 1 times [2020-09-25 13:33:54,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:54,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494102547] [2020-09-25 13:33:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 13:33:59,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:33:59,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:33:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 13:33:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:33:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:59,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:59,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:59,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:33:59,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 13:33:59,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:33:59,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:59,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494102547] [2020-09-25 13:33:59,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:59,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:33:59,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114884752] [2020-09-25 13:33:59,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:33:59,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:59,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:33:59,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:33:59,989 INFO L87 Difference]: Start difference. First operand 486 states and 544 transitions. Second operand 9 states. [2020-09-25 13:34:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:04,238 INFO L93 Difference]: Finished difference Result 1573 states and 1831 transitions. [2020-09-25 13:34:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:34:04,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-09-25 13:34:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:04,245 INFO L225 Difference]: With dead ends: 1573 [2020-09-25 13:34:04,245 INFO L226 Difference]: Without dead ends: 1016 [2020-09-25 13:34:04,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2020-09-25 13:34:04,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 975. [2020-09-25 13:34:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-09-25 13:34:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1090 transitions. [2020-09-25 13:34:04,284 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1090 transitions. Word has length 167 [2020-09-25 13:34:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:04,285 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1090 transitions. [2020-09-25 13:34:04,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:34:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1090 transitions. [2020-09-25 13:34:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 13:34:04,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:04,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:04,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:04,289 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:04,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:04,290 INFO L82 PathProgramCache]: Analyzing trace with hash 175574517, now seen corresponding path program 1 times [2020-09-25 13:34:04,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:04,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588557348] [2020-09-25 13:34:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:04,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:04,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:09,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:09,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 13:34:09,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:34:09,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:34:09,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:09,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:34:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 13:34:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:34:09,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:09,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:09,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:09,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:34:09,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:34:09,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:09,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:09,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:34:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:10,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:10,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:34:10,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 13:34:10,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:10,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:34:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:10,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588557348] [2020-09-25 13:34:10,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:10,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:34:10,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718211396] [2020-09-25 13:34:10,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:34:10,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:10,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:34:10,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:34:10,245 INFO L87 Difference]: Start difference. First operand 975 states and 1090 transitions. Second operand 14 states. [2020-09-25 13:34:11,231 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-25 13:34:11,835 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-09-25 13:34:12,336 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 13:34:13,249 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-09-25 13:34:13,613 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76