/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:31:42,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:31:42,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:31:42,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:31:42,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:31:42,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:31:42,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:31:42,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:31:42,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:31:42,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:31:42,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:31:42,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:31:42,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:31:42,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:31:42,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:31:42,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:31:42,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:31:42,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:31:42,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:31:42,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:31:42,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:31:42,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:31:42,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:31:42,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:31:42,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:31:42,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:31:42,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:31:42,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:31:42,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:31:42,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:31:42,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:31:42,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:31:42,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:31:42,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:31:42,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:31:42,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:31:42,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:31:42,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:31:42,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:31:42,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:31:42,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:31:42,490 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 13:31:42,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:31:42,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:31:42,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:31:42,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:31:42,520 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:31:42,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:31:42,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:31:42,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:31:42,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:31:42,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:31:42,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:31:42,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:31:42,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:31:42,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:31:42,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:31:42,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:31:42,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:31:42,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:31:42,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:31:42,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:31:42,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:31:42,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:31:42,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:31:42,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:31:42,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:31:42,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:31:42,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:31:42,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:31:42,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:31:42,525 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 13:31:43,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:31:43,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:31:43,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:31:43,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:31:43,063 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:31:43,064 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label26.c [2020-09-25 13:31:43,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0c60832/71fad4b0939e4511813e3eb1c568aff7/FLAG49c2489d8 [2020-09-25 13:31:43,783 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:31:43,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label26.c [2020-09-25 13:31:43,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0c60832/71fad4b0939e4511813e3eb1c568aff7/FLAG49c2489d8 [2020-09-25 13:31:44,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0c60832/71fad4b0939e4511813e3eb1c568aff7 [2020-09-25 13:31:44,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:31:44,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:31:44,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:31:44,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:31:44,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:31:44,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:31:44" (1/1) ... [2020-09-25 13:31:44,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fff5522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44, skipping insertion in model container [2020-09-25 13:31:44,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:31:44" (1/1) ... [2020-09-25 13:31:44,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:31:44,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:31:44,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:31:44,717 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:31:44,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:31:44,892 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:31:44,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44 WrapperNode [2020-09-25 13:31:44,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:31:44,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:31:44,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:31:44,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:31:44,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44" (1/1) ... [2020-09-25 13:31:44,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44" (1/1) ... [2020-09-25 13:31:44,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44" (1/1) ... [2020-09-25 13:31:44,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44" (1/1) ... [2020-09-25 13:31:44,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44" (1/1) ... [2020-09-25 13:31:45,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44" (1/1) ... [2020-09-25 13:31:45,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44" (1/1) ... [2020-09-25 13:31:45,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:31:45,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:31:45,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:31:45,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:31:45,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44" (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 13:31:45,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:31:45,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:31:45,104 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:31:45,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:31:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:31:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:31:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:31:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:31:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:31:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:31:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:31:46,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:31:46,517 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:31:46,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:31:46 BoogieIcfgContainer [2020-09-25 13:31:46,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:31:46,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:31:46,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:31:46,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:31:46,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:31:44" (1/3) ... [2020-09-25 13:31:46,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fe285c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:31:46, skipping insertion in model container [2020-09-25 13:31:46,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:44" (2/3) ... [2020-09-25 13:31:46,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fe285c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:31:46, skipping insertion in model container [2020-09-25 13:31:46,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:31:46" (3/3) ... [2020-09-25 13:31:46,539 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label26.c [2020-09-25 13:31:46,552 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:31:46,565 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:31:46,590 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:31:46,635 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:31:46,635 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:31:46,635 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:31:46,635 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:31:46,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:31:46,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:31:46,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:31:46,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:31:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:31:46,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 13:31:46,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:46,694 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] [2020-09-25 13:31:46,695 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:46,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1114585457, now seen corresponding path program 1 times [2020-09-25 13:31:46,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:46,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898545636] [2020-09-25 13:31:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:47,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:50,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:51,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:52,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:52,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 13:31:52,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:52,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 13:31:52,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:52,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:31:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 13:31:52,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 13:31:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:52,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:52,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:52,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 13:31:52,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:52,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:31:52,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:52,520 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 13:31:52,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898545636] [2020-09-25 13:31:52,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:31:52,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:31:52,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57284079] [2020-09-25 13:31:52,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:31:52,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:52,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:31:52,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:31:52,551 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:31:54,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:54,958 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 13:31:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:31:54,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-09-25 13:31:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:54,989 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 13:31:54,989 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 13:31:55,001 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 13:31:55,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 13:31:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 13:31:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 13:31:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 13:31:55,110 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 162 [2020-09-25 13:31:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:55,112 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 13:31:55,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:31:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 13:31:55,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 13:31:55,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:55,120 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] [2020-09-25 13:31:55,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:31:55,121 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:55,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:55,122 INFO L82 PathProgramCache]: Analyzing trace with hash 156587372, now seen corresponding path program 1 times [2020-09-25 13:31:55,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:55,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317018486] [2020-09-25 13:31:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:55,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:56,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:59,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:59,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:59,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:59,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:00,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:00,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 13:32:00,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:32:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 13:32:00,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:00,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 13:32:00,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 13:32:00,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:00,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:00,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:00,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:00,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:00,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:32:00,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:00,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 13:32:00,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:00,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:00,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:00,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:32:00,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:00,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 13:32:00,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:00,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:32:00,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:00,576 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 13:32:00,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317018486] [2020-09-25 13:32:00,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:00,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:32:00,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24198443] [2020-09-25 13:32:00,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:32:00,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:00,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:32:00,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:00,582 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 6 states. [2020-09-25 13:32:03,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:03,607 INFO L93 Difference]: Finished difference Result 1906 states and 2524 transitions. [2020-09-25 13:32:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:32:03,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2020-09-25 13:32:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:03,625 INFO L225 Difference]: With dead ends: 1906 [2020-09-25 13:32:03,626 INFO L226 Difference]: Without dead ends: 1315 [2020-09-25 13:32:03,630 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 13:32:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-09-25 13:32:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1102. [2020-09-25 13:32:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-09-25 13:32:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1339 transitions. [2020-09-25 13:32:03,722 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1339 transitions. Word has length 196 [2020-09-25 13:32:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:03,723 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1339 transitions. [2020-09-25 13:32:03,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:32:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1339 transitions. [2020-09-25 13:32:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 13:32:03,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:03,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:03,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:03,735 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:03,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:03,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1036654265, now seen corresponding path program 1 times [2020-09-25 13:32:03,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:03,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561279084] [2020-09-25 13:32:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:04,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:07,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:08,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:08,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:08,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 13:32:08,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:32:08,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 13:32:08,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:08,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 13:32:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 13:32:08,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:08,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:08,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:08,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:08,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:08,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:32:08,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:08,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:09,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:32:09,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:09,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 13:32:09,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:09,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:32:09,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:09,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561279084] [2020-09-25 13:32:09,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:09,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:09,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763742787] [2020-09-25 13:32:09,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:09,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:09,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:09,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:09,135 INFO L87 Difference]: Start difference. First operand 1102 states and 1339 transitions. Second operand 5 states. [2020-09-25 13:32:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:11,203 INFO L93 Difference]: Finished difference Result 2806 states and 3519 transitions. [2020-09-25 13:32:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:11,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-09-25 13:32:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:11,211 INFO L225 Difference]: With dead ends: 2806 [2020-09-25 13:32:11,212 INFO L226 Difference]: Without dead ends: 1024 [2020-09-25 13:32:11,219 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 [2020-09-25 13:32:11,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-25 13:32:11,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1002. [2020-09-25 13:32:11,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-09-25 13:32:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1178 transitions. [2020-09-25 13:32:11,262 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1178 transitions. Word has length 200 [2020-09-25 13:32:11,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:11,263 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1178 transitions. [2020-09-25 13:32:11,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1178 transitions. [2020-09-25 13:32:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 13:32:11,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:11,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:11,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:32:11,273 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:11,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash 375157522, now seen corresponding path program 1 times [2020-09-25 13:32:11,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:11,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246307162] [2020-09-25 13:32:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:11,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:14,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:16,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:16,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 13:32:16,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:32:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:32:16,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:16,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:32:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-25 13:32:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 13:32:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:16,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:16,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:16,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:16,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:16,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:32:16,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:16,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:16,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:16,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:16,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:16,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:32:16,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:16,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:32:16,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:16,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:16,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:16,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:16,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:16,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:16,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:32:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:16,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:16,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:32:16,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:16,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 13:32:16,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:16,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:16,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:16,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:16,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:32:16,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 13:32:16,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246307162] [2020-09-25 13:32:16,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:16,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:32:16,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605950435] [2020-09-25 13:32:16,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:32:16,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:16,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:32:16,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:32:16,828 INFO L87 Difference]: Start difference. First operand 1002 states and 1178 transitions. Second operand 9 states. [2020-09-25 13:32:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:20,827 INFO L93 Difference]: Finished difference Result 2730 states and 3335 transitions. [2020-09-25 13:32:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:32:20,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2020-09-25 13:32:20,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:20,836 INFO L225 Difference]: With dead ends: 2730 [2020-09-25 13:32:20,837 INFO L226 Difference]: Without dead ends: 1487 [2020-09-25 13:32:20,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:32:20,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-09-25 13:32:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1295. [2020-09-25 13:32:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1295 states. [2020-09-25 13:32:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1493 transitions. [2020-09-25 13:32:20,893 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1493 transitions. Word has length 226 [2020-09-25 13:32:20,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:20,893 INFO L479 AbstractCegarLoop]: Abstraction has 1295 states and 1493 transitions. [2020-09-25 13:32:20,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:32:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1493 transitions. [2020-09-25 13:32:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 13:32:20,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:20,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:32:20,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:32:20,901 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:20,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:20,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1180104890, now seen corresponding path program 1 times [2020-09-25 13:32:20,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:20,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810273981] [2020-09-25 13:32:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:20,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:21,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:25,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:25,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:25,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-25 13:32:25,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:32:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-09-25 13:32:25,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:25,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:32:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:32:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-09-25 13:32:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:32:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:26,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:26,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:32:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:26,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:32:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:26,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:26,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:32:26,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:32:26,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 13:32:26,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:26,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:26,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:32:26,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:26,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:32:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:26,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:26,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:32:26,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:32:26,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 13:32:26,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:26,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:32:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:32:26,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:32:27,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810273981] [2020-09-25 13:32:27,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:27,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:32:27,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676883167] [2020-09-25 13:32:27,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:32:27,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:27,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:32:27,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:32:27,143 INFO L87 Difference]: Start difference. First operand 1295 states and 1493 transitions. Second operand 12 states. [2020-09-25 13:32:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:30,520 INFO L93 Difference]: Finished difference Result 3702 states and 4380 transitions. [2020-09-25 13:32:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:32:30,521 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 251 [2020-09-25 13:32:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:30,532 INFO L225 Difference]: With dead ends: 3702 [2020-09-25 13:32:30,533 INFO L226 Difference]: Without dead ends: 2429 [2020-09-25 13:32:30,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:32:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2020-09-25 13:32:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2085. [2020-09-25 13:32:30,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-25 13:32:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 2337 transitions. [2020-09-25 13:32:30,598 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 2337 transitions. Word has length 251 [2020-09-25 13:32:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:30,599 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 2337 transitions. [2020-09-25 13:32:30,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:32:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 2337 transitions. [2020-09-25 13:32:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-09-25 13:32:30,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:30,609 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 13:32:30,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:32:30,610 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:30,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:30,610 INFO L82 PathProgramCache]: Analyzing trace with hash -215313891, now seen corresponding path program 1 times [2020-09-25 13:32:30,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:30,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984582747] [2020-09-25 13:32:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:30,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:30,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:31,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:31,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:31,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking...