/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=0.1 --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/Problem01_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:06:40,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:06:40,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:06:41,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:06:41,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:06:41,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:06:41,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:41,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:41,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:41,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:41,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:41,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:41,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:41,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:41,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:41,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:41,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:41,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:41,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:41,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:41,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:41,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:41,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:41,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:41,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:41,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:41,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:41,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:41,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:41,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:41,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:41,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:41,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:41,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:41,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:41,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:41,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:41,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:41,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:41,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:41,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:41,114 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 10:06:41,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:41,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:41,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:41,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:41,155 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:41,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:41,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:41,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:41,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:41,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:41,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:41,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:41,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:41,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:41,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:41,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:41,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:41,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:41,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:41,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:41,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:41,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:41,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:41,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:41,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:41,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:41,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:41,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:41,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:41,161 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:06:41,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:41,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:41,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:41,627 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:41,627 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:41,628 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 10:06:41,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95bae4331/4609102f83354209ae91f9731e9d779f/FLAG35d6f3556 [2020-09-25 10:06:42,305 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:42,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 10:06:42,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95bae4331/4609102f83354209ae91f9731e9d779f/FLAG35d6f3556 [2020-09-25 10:06:42,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95bae4331/4609102f83354209ae91f9731e9d779f [2020-09-25 10:06:42,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:42,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:42,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:42,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:42,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:42,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:42" (1/1) ... [2020-09-25 10:06:42,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:42, skipping insertion in model container [2020-09-25 10:06:42,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:42" (1/1) ... [2020-09-25 10:06:42,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:42,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:43,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:43,088 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:43,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:43,336 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:43,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:43 WrapperNode [2020-09-25 10:06:43,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:43,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:43,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:43,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:43,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:43" (1/1) ... [2020-09-25 10:06:43,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:43" (1/1) ... [2020-09-25 10:06:43,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:43" (1/1) ... [2020-09-25 10:06:43,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:43" (1/1) ... [2020-09-25 10:06:43,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:43" (1/1) ... [2020-09-25 10:06:43,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:43" (1/1) ... [2020-09-25 10:06:43,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:43" (1/1) ... [2020-09-25 10:06:43,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:43,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:43,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:43,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:43,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:43" (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 10:06:43,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:43,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:43,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:43,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:44,785 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:44,785 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:44,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:44 BoogieIcfgContainer [2020-09-25 10:06:44,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:44,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:44,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:44,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:44,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:42" (1/3) ... [2020-09-25 10:06:44,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e69ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:44, skipping insertion in model container [2020-09-25 10:06:44,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:43" (2/3) ... [2020-09-25 10:06:44,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e69ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:44, skipping insertion in model container [2020-09-25 10:06:44,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:44" (3/3) ... [2020-09-25 10:06:44,804 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2020-09-25 10:06:44,816 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:44,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:44,849 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:44,883 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:44,883 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:44,883 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:44,883 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:44,883 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:44,884 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:44,884 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:44,884 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 10:06:44,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:44,937 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] [2020-09-25 10:06:44,938 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash 319545741, now seen corresponding path program 1 times [2020-09-25 10:06:44,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:44,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485969589] [2020-09-25 10:06:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:45,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:46,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:46,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:50,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:50,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 10:06:50,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:06:50,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:06:50,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:50,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:06:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 10:06:50,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:06:50,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:50,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:50,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:50,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:50,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:50,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:06:50,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:50,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:50,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:50,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:06:50,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:06:50,660 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 10:06:50,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485969589] [2020-09-25 10:06:50,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:50,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:06:50,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674078756] [2020-09-25 10:06:50,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:06:50,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:50,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:06:50,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:06:50,693 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:06:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:52,680 INFO L93 Difference]: Finished difference Result 1338 states and 1736 transitions. [2020-09-25 10:06:52,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:52,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 10:06:52,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:52,713 INFO L225 Difference]: With dead ends: 1338 [2020-09-25 10:06:52,713 INFO L226 Difference]: Without dead ends: 739 [2020-09-25 10:06:52,724 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 10:06:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-09-25 10:06:52,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 664. [2020-09-25 10:06:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 10:06:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 10:06:52,826 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 133 [2020-09-25 10:06:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:52,827 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 10:06:52,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:06:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 10:06:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 10:06:52,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:52,836 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:06:52,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:52,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:52,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:52,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1171145692, now seen corresponding path program 1 times [2020-09-25 10:06:52,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:52,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595859653] [2020-09-25 10:06:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:57,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:57,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:57,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:57,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 10:06:57,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:06:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:06:57,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:57,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:06:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:06:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 10:06:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:58,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:58,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:58,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:58,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:06:58,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:58,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:58,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:58,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:06:58,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:58,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:58,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:58,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:58,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:58,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 10:06:58,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:58,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:58,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:58,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:06:58,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595859653] [2020-09-25 10:06:58,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:58,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:06:58,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356065053] [2020-09-25 10:06:58,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:06:58,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:06:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:06:58,229 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 6 states. [2020-09-25 10:07:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:00,263 INFO L93 Difference]: Finished difference Result 1748 states and 2137 transitions. [2020-09-25 10:07:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:07:00,264 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2020-09-25 10:07:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:00,272 INFO L225 Difference]: With dead ends: 1748 [2020-09-25 10:07:00,272 INFO L226 Difference]: Without dead ends: 1108 [2020-09-25 10:07:00,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:07:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2020-09-25 10:07:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1020. [2020-09-25 10:07:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-09-25 10:07:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1228 transitions. [2020-09-25 10:07:00,343 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1228 transitions. Word has length 154 [2020-09-25 10:07:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:00,344 INFO L479 AbstractCegarLoop]: Abstraction has 1020 states and 1228 transitions. [2020-09-25 10:07:00,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:07:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1228 transitions. [2020-09-25 10:07:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 10:07:00,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:00,350 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:07:00,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:07:00,350 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:00,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:00,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1950869366, now seen corresponding path program 1 times [2020-09-25 10:07:00,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:00,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252897230] [2020-09-25 10:07:00,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:00,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:01,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:01,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:05,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:05,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 10:07:05,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:07:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 10:07:05,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:05,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:07:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 10:07:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:07:05,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:06,188 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-09-25 10:07:06,451 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2020-09-25 10:07:06,774 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 50 [2020-09-25 10:07:06,990 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 46 [2020-09-25 10:07:07,223 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2020-09-25 10:07:07,426 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 38 [2020-09-25 10:07:07,609 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 34 [2020-09-25 10:07:07,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:07,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:07,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:07,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:07:07,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:07,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:07,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:07,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:07,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:07,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:07,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:07:07,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:07,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:07,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:07,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:07,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:07,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:07,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 10:07:07,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:07,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:07:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:07:07,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:07:08,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252897230] [2020-09-25 10:07:08,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:08,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:07:08,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689339002] [2020-09-25 10:07:08,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:07:08,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:08,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:07:08,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:07:08,203 INFO L87 Difference]: Start difference. First operand 1020 states and 1228 transitions. Second operand 14 states. [2020-09-25 10:07:08,773 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 10:07:08,954 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-09-25 10:07:09,415 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 114 [2020-09-25 10:07:09,919 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 111 [2020-09-25 10:07:10,327 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 108 [2020-09-25 10:07:10,565 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-09-25 10:07:11,400 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 105 [2020-09-25 10:07:11,644 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-09-25 10:07:12,640 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2020-09-25 10:07:13,239 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2020-09-25 10:07:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:13,488 INFO L93 Difference]: Finished difference Result 2199 states and 2760 transitions. [2020-09-25 10:07:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:07:13,489 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 175 [2020-09-25 10:07:13,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:13,498 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 10:07:13,498 INFO L226 Difference]: Without dead ends: 1203 [2020-09-25 10:07:13,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:07:13,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-09-25 10:07:13,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1101. [2020-09-25 10:07:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2020-09-25 10:07:13,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1320 transitions. [2020-09-25 10:07:13,545 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1320 transitions. Word has length 175 [2020-09-25 10:07:13,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:13,547 INFO L479 AbstractCegarLoop]: Abstraction has 1101 states and 1320 transitions. [2020-09-25 10:07:13,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:07:13,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1320 transitions. [2020-09-25 10:07:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 10:07:13,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:13,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:13,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:13,554 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:13,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:13,554 INFO L82 PathProgramCache]: Analyzing trace with hash -42825726, now seen corresponding path program 1 times [2020-09-25 10:07:13,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:13,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486361438] [2020-09-25 10:07:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:13,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:13,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:14,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:14,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:14,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:16,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:18,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 10:07:18,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:07:18,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 10:07:18,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:18,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:18,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:18,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 10:07:18,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 10:07:18,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:18,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:18,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:18,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:18,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:07:18,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:18,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:18,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:18,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:18,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 10:07:18,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:18,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 10:07:18,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:18,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:07:18,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:18,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486361438] [2020-09-25 10:07:18,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:18,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:07:18,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333054421] [2020-09-25 10:07:18,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:07:18,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:18,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:07:18,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:07:18,939 INFO L87 Difference]: Start difference. First operand 1101 states and 1320 transitions. Second operand 5 states. [2020-09-25 10:07:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:20,858 INFO L93 Difference]: Finished difference Result 2623 states and 3242 transitions. [2020-09-25 10:07:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:07:20,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 10:07:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:20,866 INFO L225 Difference]: With dead ends: 2623 [2020-09-25 10:07:20,866 INFO L226 Difference]: Without dead ends: 1043 [2020-09-25 10:07:20,871 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 10:07:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-09-25 10:07:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1029. [2020-09-25 10:07:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-09-25 10:07:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1222 transitions. [2020-09-25 10:07:20,900 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1222 transitions. Word has length 180 [2020-09-25 10:07:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:20,901 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1222 transitions. [2020-09-25 10:07:20,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:07:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1222 transitions. [2020-09-25 10:07:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 10:07:20,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:20,906 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:07:20,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:07:20,906 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:20,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:20,907 INFO L82 PathProgramCache]: Analyzing trace with hash 933949299, now seen corresponding path program 1 times [2020-09-25 10:07:20,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:20,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704621243] [2020-09-25 10:07:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:20,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:21,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:21,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:25,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:25,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 10:07:25,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:07:25,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:25,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:07:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 10:07:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:07:25,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:26,430 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-09-25 10:07:26,591 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-09-25 10:07:26,744 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-09-25 10:07:26,880 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 37 [2020-09-25 10:07:27,009 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2020-09-25 10:07:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:27,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:27,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:27,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:27,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:07:27,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:27,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:27,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:27,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:27,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:27,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:27,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:27,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:27,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:07:27,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:27,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:27,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:27,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:27,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:07:27,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 10:07:27,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:27,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:07:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:07:27,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704621243] [2020-09-25 10:07:27,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:27,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:07:27,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439173125] [2020-09-25 10:07:27,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:07:27,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:27,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:07:27,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:07:27,634 INFO L87 Difference]: Start difference. First operand 1029 states and 1222 transitions. Second operand 16 states. [2020-09-25 10:07:28,668 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 10:07:28,874 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-09-25 10:07:29,700 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 112