/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:55,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:55,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:56,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:56,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:56,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:56,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:56,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:56,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:56,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:56,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:56,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:56,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:56,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:56,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:56,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:56,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:56,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:56,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:56,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:56,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:56,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:56,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:56,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:56,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:56,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:56,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:56,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:56,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:56,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:56,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:56,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:56,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:56,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:56,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:56,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:56,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:56,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:56,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:56,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:56,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:56,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:40:56,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:56,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:56,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:56,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:56,101 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:56,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:56,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:56,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:56,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:56,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:56,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:56,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:56,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:56,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:56,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:56,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:56,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:56,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:56,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:56,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:56,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:56,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:56,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:56,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:56,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:56,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:56,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:56,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:56,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:56,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:40:56,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:56,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:56,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:56,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:56,599 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:56,600 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 14:40:56,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0809f004b/a194b9b89dd4463cb7bb82515b170c8f/FLAGa2185357e [2020-09-25 14:40:57,315 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:57,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 14:40:57,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0809f004b/a194b9b89dd4463cb7bb82515b170c8f/FLAGa2185357e [2020-09-25 14:40:57,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0809f004b/a194b9b89dd4463cb7bb82515b170c8f [2020-09-25 14:40:57,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:57,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:57,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:57,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:57,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:57,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:57" (1/1) ... [2020-09-25 14:40:57,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f159ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:57, skipping insertion in model container [2020-09-25 14:40:57,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:57" (1/1) ... [2020-09-25 14:40:57,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:57,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:58,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:58,276 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:58,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:58,449 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:58,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:58 WrapperNode [2020-09-25 14:40:58,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:58,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:58,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:58,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:58,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:58" (1/1) ... [2020-09-25 14:40:58,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:58" (1/1) ... [2020-09-25 14:40:58,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:58" (1/1) ... [2020-09-25 14:40:58,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:58" (1/1) ... [2020-09-25 14:40:58,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:58" (1/1) ... [2020-09-25 14:40:58,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:58" (1/1) ... [2020-09-25 14:40:58,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:58" (1/1) ... [2020-09-25 14:40:58,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:58,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:58,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:58,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:58,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:00,127 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:00,127 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:00,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:00 BoogieIcfgContainer [2020-09-25 14:41:00,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:00,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:00,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:00,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:00,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:57" (1/3) ... [2020-09-25 14:41:00,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6d371c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:00, skipping insertion in model container [2020-09-25 14:41:00,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:58" (2/3) ... [2020-09-25 14:41:00,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6d371c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:00, skipping insertion in model container [2020-09-25 14:41:00,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:00" (3/3) ... [2020-09-25 14:41:00,147 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2020-09-25 14:41:00,159 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:00,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:00,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:00,228 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:00,228 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:00,228 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:00,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:00,229 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:00,229 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:00,229 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:00,229 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:41:00,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 14:41:00,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:00,285 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] [2020-09-25 14:41:00,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:00,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:00,294 INFO L82 PathProgramCache]: Analyzing trace with hash -934155158, now seen corresponding path program 1 times [2020-09-25 14:41:00,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:00,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487252251] [2020-09-25 14:41:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:03,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:05,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:05,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 14:41:05,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 14:41:05,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:05,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:41:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 14:41:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:41:05,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:05,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:05,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:05,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:41:05,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:05,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:41:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:06,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487252251] [2020-09-25 14:41:06,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:06,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:06,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054843435] [2020-09-25 14:41:06,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:06,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:06,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:06,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:06,050 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:41:08,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:08,286 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 14:41:08,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:08,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-25 14:41:08,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:08,320 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 14:41:08,320 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 14:41:08,330 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 14:41:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 14:41:08,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 14:41:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 14:41:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 14:41:08,429 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 149 [2020-09-25 14:41:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:08,430 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 14:41:08,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 14:41:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 14:41:08,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:08,443 INFO L422 BasicCegarLoop]: trace histogram [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 14:41:08,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:08,444 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:08,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:08,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1111409233, now seen corresponding path program 1 times [2020-09-25 14:41:08,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:08,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74769054] [2020-09-25 14:41:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:08,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:13,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 14:41:13,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:13,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:41:13,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:13,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 14:41:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 14:41:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:13,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:13,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:13,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:13,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:13,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:13,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 14:41:13,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:13,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:13,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:41:13,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:13,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:41:13,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:13,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:13,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 14:41:13,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:13,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74769054] [2020-09-25 14:41:13,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:13,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:13,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035505767] [2020-09-25 14:41:13,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:13,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:13,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:13,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:13,829 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 14:41:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:15,981 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-25 14:41:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:15,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 14:41:15,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:15,992 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 14:41:15,993 INFO L226 Difference]: Without dead ends: 932 [2020-09-25 14:41:15,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-25 14:41:16,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-25 14:41:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-25 14:41:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-25 14:41:16,039 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 166 [2020-09-25 14:41:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:16,040 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-25 14:41:16,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-25 14:41:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 14:41:16,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:16,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 14:41:16,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:16,046 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:16,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:16,047 INFO L82 PathProgramCache]: Analyzing trace with hash -375129923, now seen corresponding path program 1 times [2020-09-25 14:41:16,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:16,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115435229] [2020-09-25 14:41:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:16,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:17,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:18,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:20,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:20,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:21,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 14:41:21,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:41:21,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 14:41:21,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:21,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 14:41:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:41:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:21,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:21,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:21,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:21,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:21,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:21,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:21,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:21,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:21,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:41:21,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:41:21,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:21,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:41:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:21,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:21,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:21,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 14:41:21,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:21,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:21,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:21,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:41:21,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:41:21,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115435229] [2020-09-25 14:41:21,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:21,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:41:21,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035113951] [2020-09-25 14:41:21,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:21,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:21,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:21,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:21,628 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 8 states. [2020-09-25 14:41:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:25,769 INFO L93 Difference]: Finished difference Result 2695 states and 3495 transitions. [2020-09-25 14:41:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:25,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-09-25 14:41:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:25,784 INFO L225 Difference]: With dead ends: 2695 [2020-09-25 14:41:25,784 INFO L226 Difference]: Without dead ends: 1540 [2020-09-25 14:41:25,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-09-25 14:41:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1522. [2020-09-25 14:41:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-25 14:41:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1816 transitions. [2020-09-25 14:41:25,861 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1816 transitions. Word has length 184 [2020-09-25 14:41:25,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:25,861 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 1816 transitions. [2020-09-25 14:41:25,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:25,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1816 transitions. [2020-09-25 14:41:25,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 14:41:25,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:25,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:25,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:25,870 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:25,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:25,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1713485497, now seen corresponding path program 1 times [2020-09-25 14:41:25,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:25,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563531239] [2020-09-25 14:41:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:25,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:26,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:30,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:30,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 14:41:30,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:30,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:41:30,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:30,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:30,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 14:41:30,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 14:41:30,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:31,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:31,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:31,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:31,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:41:31,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:31,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:31,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:31,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:31,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:31,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:31,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:41:31,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:31,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 14:41:31,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:31,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:41:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:31,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563531239] [2020-09-25 14:41:31,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:31,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:31,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015131379] [2020-09-25 14:41:31,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:31,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:31,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:31,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:31,314 INFO L87 Difference]: Start difference. First operand 1522 states and 1816 transitions. Second operand 5 states. [2020-09-25 14:41:33,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:33,624 INFO L93 Difference]: Finished difference Result 4036 states and 4950 transitions. [2020-09-25 14:41:33,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:33,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 14:41:33,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:33,642 INFO L225 Difference]: With dead ends: 4036 [2020-09-25 14:41:33,643 INFO L226 Difference]: Without dead ends: 2381 [2020-09-25 14:41:33,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:33,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-09-25 14:41:33,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2288. [2020-09-25 14:41:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2020-09-25 14:41:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 2744 transitions. [2020-09-25 14:41:33,745 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 2744 transitions. Word has length 191 [2020-09-25 14:41:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:33,746 INFO L479 AbstractCegarLoop]: Abstraction has 2288 states and 2744 transitions. [2020-09-25 14:41:33,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 2744 transitions. [2020-09-25 14:41:33,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 14:41:33,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:33,757 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:33,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:33,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:33,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:33,758 INFO L82 PathProgramCache]: Analyzing trace with hash -755789642, now seen corresponding path program 1 times [2020-09-25 14:41:33,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:33,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079421884] [2020-09-25 14:41:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:33,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:33,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:38,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:38,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 14:41:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 14:41:38,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:38,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:41:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 14:41:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 14:41:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:38,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:38,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:38,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:38,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:38,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:38,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:39,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:39,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:39,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:41:39,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:41:39,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:39,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:39,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:39,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:39,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:41:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:39,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:39,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:41:39,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 14:41:39,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:39,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:41:39,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 14:41:39,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079421884] [2020-09-25 14:41:39,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:39,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:41:39,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389602184] [2020-09-25 14:41:39,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:41:39,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:39,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:41:39,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:41:39,359 INFO L87 Difference]: Start difference. First operand 2288 states and 2744 transitions. Second operand 10 states. [2020-09-25 14:41:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:43,079 INFO L93 Difference]: Finished difference Result 5723 states and 7216 transitions. [2020-09-25 14:41:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:41:43,080 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-09-25 14:41:43,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:43,092 INFO L225 Difference]: With dead ends: 5723 [2020-09-25 14:41:43,092 INFO L226 Difference]: Without dead ends: 2223 [2020-09-25 14:41:43,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:41:43,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-09-25 14:41:43,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2213. [2020-09-25 14:41:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2020-09-25 14:41:43,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 2600 transitions. [2020-09-25 14:41:43,169 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 2600 transitions. Word has length 200 [2020-09-25 14:41:43,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:43,170 INFO L479 AbstractCegarLoop]: Abstraction has 2213 states and 2600 transitions. [2020-09-25 14:41:43,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:41:43,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 2600 transitions. [2020-09-25 14:41:43,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 14:41:43,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:43,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:41:43,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:41:43,181 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:43,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:43,181 INFO L82 PathProgramCache]: Analyzing trace with hash 37270687, now seen corresponding path program 1 times [2020-09-25 14:41:43,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:43,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129222189] [2020-09-25 14:41:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking...