/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:30,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:30,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:30,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:30,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:30,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:30,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:30,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:30,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:30,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:30,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:30,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:30,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:30,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:30,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:30,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:30,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:30,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:30,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:30,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:30,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:30,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:30,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:30,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:30,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:30,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:30,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:30,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:30,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:30,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:30,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:30,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:30,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:30,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:30,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:30,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:30,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:30,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:30,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:30,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:30,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:30,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:23:30,451 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:30,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:30,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:30,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:30,454 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:30,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:30,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:30,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:30,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:30,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:30,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:30,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:30,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:30,457 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:30,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:30,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:30,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:30,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:30,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:30,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:30,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:30,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:30,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:30,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:30,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:30,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:30,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:30,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:30,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:30,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:23:30,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:30,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:30,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:30,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:30,948 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:30,949 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-24 18:23:31,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43cfd53d8/81f78d9023d34dd88d8620778373731c/FLAG59c2bcbd2 [2020-09-24 18:23:31,683 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:31,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-24 18:23:31,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43cfd53d8/81f78d9023d34dd88d8620778373731c/FLAG59c2bcbd2 [2020-09-24 18:23:31,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43cfd53d8/81f78d9023d34dd88d8620778373731c [2020-09-24 18:23:31,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:31,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:31,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:31,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:31,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:31,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:31" (1/1) ... [2020-09-24 18:23:31,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:31, skipping insertion in model container [2020-09-24 18:23:31,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:31" (1/1) ... [2020-09-24 18:23:31,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:32,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:32,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:32,534 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:32,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:32,782 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:32,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32 WrapperNode [2020-09-24 18:23:32,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:32,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:32,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:32,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:32,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32" (1/1) ... [2020-09-24 18:23:32,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32" (1/1) ... [2020-09-24 18:23:32,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32" (1/1) ... [2020-09-24 18:23:32,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32" (1/1) ... [2020-09-24 18:23:32,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32" (1/1) ... [2020-09-24 18:23:32,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32" (1/1) ... [2020-09-24 18:23:32,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32" (1/1) ... [2020-09-24 18:23:32,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:32,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:32,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:32,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:32,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:32,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:32,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:32,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:32,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:34,482 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:34,482 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:34,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:34 BoogieIcfgContainer [2020-09-24 18:23:34,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:34,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:34,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:34,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:34,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:31" (1/3) ... [2020-09-24 18:23:34,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:34, skipping insertion in model container [2020-09-24 18:23:34,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32" (2/3) ... [2020-09-24 18:23:34,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:34, skipping insertion in model container [2020-09-24 18:23:34,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:34" (3/3) ... [2020-09-24 18:23:34,503 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-24 18:23:34,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:34,528 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:34,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:34,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:34,594 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:34,594 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:34,594 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:34,594 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:34,594 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:34,595 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:34,595 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 18:23:34,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:34,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:34,661 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:34,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:34,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-24 18:23:34,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:34,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967537662] [2020-09-24 18:23:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:40,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 18:23:40,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:40,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 18:23:40,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:23:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-24 18:23:40,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:40,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:40,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:40,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:40,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:23:40,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:40,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967537662] [2020-09-24 18:23:40,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:40,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:40,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035162216] [2020-09-24 18:23:40,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:40,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:40,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:40,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:40,477 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:42,865 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-24 18:23:42,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:42,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-24 18:23:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:42,897 INFO L225 Difference]: With dead ends: 1386 [2020-09-24 18:23:42,897 INFO L226 Difference]: Without dead ends: 787 [2020-09-24 18:23:42,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:42,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-24 18:23:43,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-24 18:23:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-24 18:23:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-24 18:23:43,019 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 164 [2020-09-24 18:23:43,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:43,020 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-24 18:23:43,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-24 18:23:43,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 18:23:43,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:43,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:43,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:43,031 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:43,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:43,032 INFO L82 PathProgramCache]: Analyzing trace with hash 591184877, now seen corresponding path program 1 times [2020-09-24 18:23:43,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:43,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759115849] [2020-09-24 18:23:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-24 18:23:48,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:23:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 18:23:48,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 18:23:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-24 18:23:48,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:48,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:48,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:48,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:48,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:48,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:48,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:48,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:48,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:48,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:23:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:48,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759115849] [2020-09-24 18:23:48,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:48,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:48,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120244688] [2020-09-24 18:23:48,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:48,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:48,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:48,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:48,369 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-24 18:23:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:50,277 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-24 18:23:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:50,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-24 18:23:50,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:50,294 INFO L225 Difference]: With dead ends: 1757 [2020-09-24 18:23:50,294 INFO L226 Difference]: Without dead ends: 1046 [2020-09-24 18:23:50,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:50,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-24 18:23:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-24 18:23:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-24 18:23:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-24 18:23:50,371 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 182 [2020-09-24 18:23:50,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:50,372 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-24 18:23:50,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-24 18:23:50,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 18:23:50,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:50,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:50,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:50,380 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:50,381 INFO L82 PathProgramCache]: Analyzing trace with hash 156773588, now seen corresponding path program 1 times [2020-09-24 18:23:50,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:50,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959533241] [2020-09-24 18:23:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:55,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 18:23:55,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 18:23:55,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 18:23:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-24 18:23:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:55,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:55,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:55,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:55,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:55,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:55,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:55,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:55,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:55,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:55,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:23:55,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:23:55,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:55,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959533241] [2020-09-24 18:23:55,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:55,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:55,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449797122] [2020-09-24 18:23:55,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:55,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:55,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:55,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:55,670 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-24 18:23:57,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:57,920 INFO L93 Difference]: Finished difference Result 2668 states and 3421 transitions. [2020-09-24 18:23:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:57,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-24 18:23:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:57,934 INFO L225 Difference]: With dead ends: 2668 [2020-09-24 18:23:57,934 INFO L226 Difference]: Without dead ends: 973 [2020-09-24 18:23:57,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-09-24 18:23:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 963. [2020-09-24 18:23:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-09-24 18:23:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1177 transitions. [2020-09-24 18:23:57,988 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1177 transitions. Word has length 198 [2020-09-24 18:23:57,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:57,990 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1177 transitions. [2020-09-24 18:23:57,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1177 transitions. [2020-09-24 18:23:57,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-24 18:23:57,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:57,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:57,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:57,999 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:58,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:58,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1119078680, now seen corresponding path program 1 times [2020-09-24 18:23:58,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:58,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169197792] [2020-09-24 18:23:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:59,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:03,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-24 18:24:03,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-24 18:24:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:24:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:24:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:03,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:03,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:03,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:03,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:03,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:24:03,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:03,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:03,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:24:03,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:03,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:03,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:03,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:24:03,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:03,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 18:24:03,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:24:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:03,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169197792] [2020-09-24 18:24:03,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:03,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:24:03,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117639054] [2020-09-24 18:24:03,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:03,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:03,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:03,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:03,369 INFO L87 Difference]: Start difference. First operand 963 states and 1177 transitions. Second operand 7 states. [2020-09-24 18:24:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:05,377 INFO L93 Difference]: Finished difference Result 2575 states and 3265 transitions. [2020-09-24 18:24:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:05,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-09-24 18:24:05,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:05,388 INFO L225 Difference]: With dead ends: 2575 [2020-09-24 18:24:05,389 INFO L226 Difference]: Without dead ends: 1634 [2020-09-24 18:24:05,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2020-09-24 18:24:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1589. [2020-09-24 18:24:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-09-24 18:24:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 1873 transitions. [2020-09-24 18:24:05,451 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 1873 transitions. Word has length 202 [2020-09-24 18:24:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:05,452 INFO L479 AbstractCegarLoop]: Abstraction has 1589 states and 1873 transitions. [2020-09-24 18:24:05,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 1873 transitions. [2020-09-24 18:24:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-24 18:24:05,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:05,461 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:05,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:05,461 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:05,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:05,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1709933679, now seen corresponding path program 1 times [2020-09-24 18:24:05,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:05,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921017094] [2020-09-24 18:24:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:05,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:05,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:06,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:08,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-24 18:24:08,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:08,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3490 [2020-09-24 18:24:08,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:24:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:24:08,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:09,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:09,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:09,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:09,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:24:09,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:09,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:09,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:09,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:24:09,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:09,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:24:09,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:24:09,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:24:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:09,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:24:09,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:09,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:24:09,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:09,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:09,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:24:09,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 18:24:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:09,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 18:24:09,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:24:09,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 18:24:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 74 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 18:24:09,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921017094] [2020-09-24 18:24:09,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:09,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:09,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191557071] [2020-09-24 18:24:09,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:09,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:09,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:09,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:09,302 INFO L87 Difference]: Start difference. First operand 1589 states and 1873 transitions. Second operand 7 states. [2020-09-24 18:24:11,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:11,662 INFO L93 Difference]: Finished difference Result 3834 states and 4761 transitions. [2020-09-24 18:24:11,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:11,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-09-24 18:24:11,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:11,675 INFO L225 Difference]: With dead ends: 3834 [2020-09-24 18:24:11,675 INFO L226 Difference]: Without dead ends: 2267 [2020-09-24 18:24:11,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:11,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2020-09-24 18:24:11,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2215. [2020-09-24 18:24:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-09-24 18:24:11,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2614 transitions. [2020-09-24 18:24:11,756 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2614 transitions. Word has length 243 [2020-09-24 18:24:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:11,757 INFO L479 AbstractCegarLoop]: Abstraction has 2215 states and 2614 transitions. [2020-09-24 18:24:11,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2614 transitions. [2020-09-24 18:24:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-24 18:24:11,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:11,771 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:11,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:11,771 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:11,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:11,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1284448146, now seen corresponding path program 1 times [2020-09-24 18:24:11,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:11,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777082875] [2020-09-24 18:24:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:16,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-24 18:24:16,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:24:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 18:24:16,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 18:24:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:24:16,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:16,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:16,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:16,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:16,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:24:16,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:16,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:16,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:16,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:16,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:16,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:16,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:24:16,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:24:16,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:16,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:16,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:24:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:16,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:16,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:24:16,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:16,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:24:16,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:24:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:17,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:24:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:17,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:17,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:17,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 18:24:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:24:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:24:17,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777082875] [2020-09-24 18:24:17,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:17,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:17,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279089208] [2020-09-24 18:24:17,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:17,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:17,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:17,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:17,172 INFO L87 Difference]: Start difference. First operand 2215 states and 2614 transitions. Second operand 7 states. [2020-09-24 18:24:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:19,951 INFO L93 Difference]: Finished difference Result 5044 states and 6023 transitions. [2020-09-24 18:24:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:19,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-09-24 18:24:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:19,966 INFO L225 Difference]: With dead ends: 5044 [2020-09-24 18:24:19,967 INFO L226 Difference]: Without dead ends: 2683 [2020-09-24 18:24:19,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:19,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2020-09-24 18:24:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2527. [2020-09-24 18:24:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2527 states. [2020-09-24 18:24:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 2898 transitions. [2020-09-24 18:24:20,057 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 2898 transitions. Word has length 248 [2020-09-24 18:24:20,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:20,058 INFO L479 AbstractCegarLoop]: Abstraction has 2527 states and 2898 transitions. [2020-09-24 18:24:20,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 2898 transitions. [2020-09-24 18:24:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 18:24:20,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:20,070 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:20,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:24:20,071 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:20,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:20,072 INFO L82 PathProgramCache]: Analyzing trace with hash -302194300, now seen corresponding path program 1 times [2020-09-24 18:24:20,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:20,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377377565] [2020-09-24 18:24:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:20,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking...