/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=0.3 --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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:24:44,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:24:44,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:24:44,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:24:44,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:24:44,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:24:44,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:24:44,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:24:44,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:24:44,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:24:44,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:24:44,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:24:44,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:24:44,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:24:44,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:24:44,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:24:44,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:24:44,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:24:44,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:24:44,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:24:44,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:24:44,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:24:44,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:24:44,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:24:44,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:24:44,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:24:44,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:24:44,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:24:44,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:24:44,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:24:44,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:24:44,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:24:44,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:24:44,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:24:44,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:24:44,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:24:44,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:24:44,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:24:44,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:24:44,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:24:44,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:24:44,109 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 12:24:44,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:24:44,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:24:44,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:24:44,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:24:44,156 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:24:44,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:24:44,157 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:24:44,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:24:44,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:24:44,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:24:44,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:24:44,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:24:44,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:24:44,159 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:24:44,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:24:44,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:24:44,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:24:44,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:24:44,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:24:44,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:24:44,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:24:44,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:24:44,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:24:44,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:24:44,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:24:44,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:24:44,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:24:44,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:24:44,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:24:44,163 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:24:44,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:24:44,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:24:44,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:24:44,677 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:24:44,678 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:24:44,679 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 12:24:44,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdc33e34f/3195f605968d466b8057f42782b41a7e/FLAGaf297e904 [2020-09-25 12:24:45,453 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:24:45,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 12:24:45,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdc33e34f/3195f605968d466b8057f42782b41a7e/FLAGaf297e904 [2020-09-25 12:24:45,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdc33e34f/3195f605968d466b8057f42782b41a7e [2020-09-25 12:24:45,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:24:45,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:24:45,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:45,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:24:45,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:24:45,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:45" (1/1) ... [2020-09-25 12:24:45,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a03fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:45, skipping insertion in model container [2020-09-25 12:24:45,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:45" (1/1) ... [2020-09-25 12:24:45,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:24:45,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:24:46,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:46,255 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:24:46,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:46,529 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:24:46,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:46 WrapperNode [2020-09-25 12:24:46,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:46,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:24:46,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:24:46,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:24:46,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:46" (1/1) ... [2020-09-25 12:24:46,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:46" (1/1) ... [2020-09-25 12:24:46,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:46" (1/1) ... [2020-09-25 12:24:46,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:46" (1/1) ... [2020-09-25 12:24:46,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:46" (1/1) ... [2020-09-25 12:24:46,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:46" (1/1) ... [2020-09-25 12:24:46,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:46" (1/1) ... [2020-09-25 12:24:46,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:24:46,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:24:46,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:24:46,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:24:46,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:46" (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 12:24:46,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:24:46,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:24:46,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:24:46,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:24:46,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:24:46,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:24:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:24:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:24:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:24:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:24:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:24:48,165 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:24:48,165 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:24:48,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:48 BoogieIcfgContainer [2020-09-25 12:24:48,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:24:48,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:24:48,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:24:48,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:24:48,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:24:45" (1/3) ... [2020-09-25 12:24:48,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5510976b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:48, skipping insertion in model container [2020-09-25 12:24:48,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:46" (2/3) ... [2020-09-25 12:24:48,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5510976b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:48, skipping insertion in model container [2020-09-25 12:24:48,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:48" (3/3) ... [2020-09-25 12:24:48,185 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-09-25 12:24:48,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:24:48,209 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:24:48,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:24:48,271 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:24:48,271 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:24:48,271 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:24:48,271 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:24:48,271 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:24:48,272 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:24:48,272 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:24:48,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:24:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:24:48,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 12:24:48,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:48,326 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] [2020-09-25 12:24:48,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:48,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1858793511, now seen corresponding path program 1 times [2020-09-25 12:24:48,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:48,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136863733] [2020-09-25 12:24:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:48,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:51,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:53,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:53,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:53,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 12:24:53,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:53,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 12:24:53,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:53,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:24:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:24:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 12:24:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:24:53,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:53,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:53,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:53,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:24:53,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:53,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:53,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:24:53,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:53,931 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 12:24:53,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136863733] [2020-09-25 12:24:53,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:24:53,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:24:53,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581108287] [2020-09-25 12:24:53,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:24:53,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:53,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:24:53,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:24:53,975 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:24:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:56,383 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 12:24:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:24:56,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 12:24:56,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:56,417 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 12:24:56,417 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 12:24:56,429 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 12:24:56,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 12:24:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 12:24:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 12:24:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 12:24:56,536 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 116 [2020-09-25 12:24:56,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:56,537 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 12:24:56,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:24:56,537 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 12:24:56,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 12:24:56,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:56,546 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:56,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:24:56,546 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:56,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash 525477933, now seen corresponding path program 1 times [2020-09-25 12:24:56,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:56,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352669316] [2020-09-25 12:24:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:58,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:00,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:00,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:01,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 12:25:01,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:25:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:25:01,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:01,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:25:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 12:25:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:01,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:01,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:01,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:01,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:01,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:01,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:25:01,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:01,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:01,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:01,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:01,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:01,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:25:01,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:01,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:25:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:01,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352669316] [2020-09-25 12:25:01,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:01,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:01,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627586027] [2020-09-25 12:25:01,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:01,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:01,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:01,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:01,799 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 12:25:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:03,741 INFO L93 Difference]: Finished difference Result 1662 states and 2128 transitions. [2020-09-25 12:25:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:03,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 12:25:03,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:03,750 INFO L225 Difference]: With dead ends: 1662 [2020-09-25 12:25:03,750 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 12:25:03,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:25:03,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 12:25:03,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 971. [2020-09-25 12:25:03,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-25 12:25:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1181 transitions. [2020-09-25 12:25:03,814 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1181 transitions. Word has length 134 [2020-09-25 12:25:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:03,815 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1181 transitions. [2020-09-25 12:25:03,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1181 transitions. [2020-09-25 12:25:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 12:25:03,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:03,829 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] [2020-09-25 12:25:03,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:03,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:03,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:03,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1960543630, now seen corresponding path program 1 times [2020-09-25 12:25:03,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:03,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477358975] [2020-09-25 12:25:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:03,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:08,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:08,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:08,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 12:25:08,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:25:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:25:08,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:08,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:25:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:25:08,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:08,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:08,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:08,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:08,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:08,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:08,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:25:08,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:08,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:08,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:09,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:09,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:09,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:25:09,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:25:09,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:09,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:09,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:25:09,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:09,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477358975] [2020-09-25 12:25:09,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:09,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:09,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660844024] [2020-09-25 12:25:09,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:09,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:09,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:09,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:09,057 INFO L87 Difference]: Start difference. First operand 971 states and 1181 transitions. Second operand 5 states. [2020-09-25 12:25:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:11,056 INFO L93 Difference]: Finished difference Result 2277 states and 2879 transitions. [2020-09-25 12:25:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:11,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 12:25:11,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:11,073 INFO L225 Difference]: With dead ends: 2277 [2020-09-25 12:25:11,073 INFO L226 Difference]: Without dead ends: 1328 [2020-09-25 12:25:11,077 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 12:25:11,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2020-09-25 12:25:11,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1276. [2020-09-25 12:25:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-09-25 12:25:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1534 transitions. [2020-09-25 12:25:11,119 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1534 transitions. Word has length 135 [2020-09-25 12:25:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:11,120 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1534 transitions. [2020-09-25 12:25:11,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:11,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1534 transitions. [2020-09-25 12:25:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 12:25:11,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:11,125 INFO L422 BasicCegarLoop]: trace histogram [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 12:25:11,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:25:11,125 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:11,126 INFO L82 PathProgramCache]: Analyzing trace with hash 336019643, now seen corresponding path program 1 times [2020-09-25 12:25:11,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:11,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133060205] [2020-09-25 12:25:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:11,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:12,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:12,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:12,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:13,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:14,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:15,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:15,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 12:25:15,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:25:15,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4799 [2020-09-25 12:25:15,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:15,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:25:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:25:15,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:16,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:16,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:16,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:16,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:16,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:25:16,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:16,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:16,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:16,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:25:16,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:16,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:25:16,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:16,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:25:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:16,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133060205] [2020-09-25 12:25:16,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:16,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:25:16,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74550989] [2020-09-25 12:25:16,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:25:16,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:16,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:25:16,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:25:16,261 INFO L87 Difference]: Start difference. First operand 1276 states and 1534 transitions. Second operand 6 states. [2020-09-25 12:25:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:19,176 INFO L93 Difference]: Finished difference Result 3233 states and 4117 transitions. [2020-09-25 12:25:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:25:19,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 12:25:19,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:19,189 INFO L225 Difference]: With dead ends: 3233 [2020-09-25 12:25:19,189 INFO L226 Difference]: Without dead ends: 1979 [2020-09-25 12:25:19,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:25:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2020-09-25 12:25:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1888. [2020-09-25 12:25:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-09-25 12:25:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2347 transitions. [2020-09-25 12:25:19,258 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2347 transitions. Word has length 138 [2020-09-25 12:25:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:19,259 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2347 transitions. [2020-09-25 12:25:19,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:25:19,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2347 transitions. [2020-09-25 12:25:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 12:25:19,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:19,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:25:19,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:25:19,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash 771470164, now seen corresponding path program 1 times [2020-09-25 12:25:19,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:19,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060602609] [2020-09-25 12:25:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:19,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:21,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:24,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:24,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 12:25:24,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:25:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5402 [2020-09-25 12:25:24,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:24,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:25:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:25:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 12:25:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:25,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:25,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:25,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:25:25,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:25,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:25:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:25:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:25,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 12:25:25,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:25:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 12:25:25,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:25,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:25:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:26,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060602609] [2020-09-25 12:25:26,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:26,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 12:25:26,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379638370] [2020-09-25 12:25:26,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 12:25:26,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:26,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 12:25:26,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:25:26,066 INFO L87 Difference]: Start difference. First operand 1888 states and 2347 transitions. Second operand 17 states. [2020-09-25 12:25:29,500 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 12:25:31,226 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-09-25 12:25:31,495 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-25 12:25:32,255 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-09-25 12:25:32,546 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-09-25 12:25:34,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:34,142 INFO L93 Difference]: Finished difference Result 8007 states and 10671 transitions. [2020-09-25 12:25:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 12:25:34,142 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 164 [2020-09-25 12:25:34,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:34,172 INFO L225 Difference]: With dead ends: 8007 [2020-09-25 12:25:34,173 INFO L226 Difference]: Without dead ends: 5986 [2020-09-25 12:25:34,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=332, Invalid=660, Unknown=0, NotChecked=0, Total=992 [2020-09-25 12:25:34,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2020-09-25 12:25:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 5484. [2020-09-25 12:25:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5484 states. [2020-09-25 12:25:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 6662 transitions. [2020-09-25 12:25:34,368 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 6662 transitions. Word has length 164 [2020-09-25 12:25:34,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:34,369 INFO L479 AbstractCegarLoop]: Abstraction has 5484 states and 6662 transitions. [2020-09-25 12:25:34,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 12:25:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 6662 transitions. [2020-09-25 12:25:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 12:25:34,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:34,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:25:34,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:25:34,387 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:34,387 INFO L82 PathProgramCache]: Analyzing trace with hash -737345163, now seen corresponding path program 1 times [2020-09-25 12:25:34,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:34,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473617106] [2020-09-25 12:25:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:34,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking...