/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem10_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:23,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:23,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:23,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:23,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:23,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:23,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:23,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:23,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:23,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:23,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:23,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:23,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:23,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:23,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:23,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:23,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:23,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:23,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:23,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:23,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:23,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:23,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:23,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:23,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:23,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:23,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:23,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:23,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:23,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:23,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:23,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:23,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:23,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:23,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:23,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:23,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:23,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:23,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:23,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:23,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:23,259 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 06:48:23,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:23,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:23,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:23,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:23,313 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:23,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:23,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:23,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:23,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:23,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:23,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:23,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:23,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:23,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:23,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:23,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:23,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:23,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:23,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:23,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:23,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:23,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:23,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:23,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:23,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:23,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:23,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:23,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:23,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:23,320 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:48:23,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:23,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:23,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:23,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:23,822 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:23,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 06:48:23,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9af9091ac/8f494bbab4d5478fb048ce0b1bf5836b/FLAG4767a2f82 [2020-09-25 06:48:24,543 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:48:24,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 06:48:24,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9af9091ac/8f494bbab4d5478fb048ce0b1bf5836b/FLAG4767a2f82 [2020-09-25 06:48:24,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9af9091ac/8f494bbab4d5478fb048ce0b1bf5836b [2020-09-25 06:48:24,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:48:24,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:48:24,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:24,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:48:24,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:48:24,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:24" (1/1) ... [2020-09-25 06:48:24,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:24, skipping insertion in model container [2020-09-25 06:48:24,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:24" (1/1) ... [2020-09-25 06:48:24,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:48:24,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:48:25,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:25,467 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:48:25,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:25,610 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:48:25,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:25 WrapperNode [2020-09-25 06:48:25,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:25,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:48:25,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:48:25,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:48:25,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:25" (1/1) ... [2020-09-25 06:48:25,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:25" (1/1) ... [2020-09-25 06:48:25,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:25" (1/1) ... [2020-09-25 06:48:25,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:25" (1/1) ... [2020-09-25 06:48:25,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:25" (1/1) ... [2020-09-25 06:48:25,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:25" (1/1) ... [2020-09-25 06:48:25,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:25" (1/1) ... [2020-09-25 06:48:25,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:48:25,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:48:25,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:48:25,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:48:25,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:25" (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 06:48:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:48:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:48:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:48:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:48:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:48:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:48:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:48:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:48:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:48:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:48:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:48:27,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:48:27,301 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:48:27,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:27 BoogieIcfgContainer [2020-09-25 06:48:27,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:48:27,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:48:27,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:48:27,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:48:27,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:48:24" (1/3) ... [2020-09-25 06:48:27,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e8525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:27, skipping insertion in model container [2020-09-25 06:48:27,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:25" (2/3) ... [2020-09-25 06:48:27,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e8525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:27, skipping insertion in model container [2020-09-25 06:48:27,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:27" (3/3) ... [2020-09-25 06:48:27,322 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-09-25 06:48:27,335 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:48:27,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:48:27,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:48:27,422 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:48:27,422 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:48:27,422 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:48:27,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:48:27,422 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:48:27,423 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:48:27,423 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:48:27,423 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:48:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:48:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 06:48:27,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:27,468 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] [2020-09-25 06:48:27,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:27,477 INFO L82 PathProgramCache]: Analyzing trace with hash 963589103, now seen corresponding path program 1 times [2020-09-25 06:48:27,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:27,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165952990] [2020-09-25 06:48:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:27,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:28,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:28,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 06:48:28,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:48:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-09-25 06:48:28,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:28,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:48:28,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:48:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:28,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:28,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:28,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:48:28,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:28,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:28,698 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 06:48:28,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165952990] [2020-09-25 06:48:28,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:28,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:48:28,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068715162] [2020-09-25 06:48:28,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:48:28,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:28,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:48:28,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:48:28,732 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:48:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:30,666 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 06:48:30,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:48:30,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 06:48:30,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:30,691 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 06:48:30,691 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 06:48:30,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:30,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 06:48:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 06:48:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 06:48:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 06:48:30,809 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 60 [2020-09-25 06:48:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:30,810 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 06:48:30,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:48:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 06:48:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 06:48:30,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:30,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:30,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:48:30,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:30,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:30,820 INFO L82 PathProgramCache]: Analyzing trace with hash 495482008, now seen corresponding path program 1 times [2020-09-25 06:48:30,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:30,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515432696] [2020-09-25 06:48:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:31,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:32,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 06:48:32,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:48:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1917 [2020-09-25 06:48:32,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:32,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:48:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:32,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:32,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:32,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:32,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:48:32,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:32,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:48:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:48:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:33,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:33,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:33,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:48:33,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:33,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 06:48:33,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:33,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:33,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:33,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:48:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:48:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:33,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515432696] [2020-09-25 06:48:33,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:33,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:33,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529323863] [2020-09-25 06:48:33,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:33,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:33,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:33,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:33,356 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 06:48:35,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:35,920 INFO L93 Difference]: Finished difference Result 1503 states and 1930 transitions. [2020-09-25 06:48:35,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:35,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 06:48:35,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:35,929 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 06:48:35,929 INFO L226 Difference]: Without dead ends: 975 [2020-09-25 06:48:35,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:48:35,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-25 06:48:35,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 892. [2020-09-25 06:48:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-09-25 06:48:36,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1129 transitions. [2020-09-25 06:48:36,002 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1129 transitions. Word has length 140 [2020-09-25 06:48:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:36,003 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1129 transitions. [2020-09-25 06:48:36,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1129 transitions. [2020-09-25 06:48:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 06:48:36,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:36,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:36,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:48:36,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:36,010 INFO L82 PathProgramCache]: Analyzing trace with hash -273743075, now seen corresponding path program 1 times [2020-09-25 06:48:36,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:36,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305094818] [2020-09-25 06:48:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:38,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:38,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:40,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:40,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 06:48:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:48:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4090 [2020-09-25 06:48:40,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:40,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:48:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:48:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:40,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:40,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:40,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:40,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:40,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:48:40,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:40,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:40,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:40,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:40,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:40,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 06:48:40,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:40,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:48:40,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:40,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305094818] [2020-09-25 06:48:40,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:40,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:48:40,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545091256] [2020-09-25 06:48:40,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:48:40,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:40,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:48:40,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:48:40,594 INFO L87 Difference]: Start difference. First operand 892 states and 1129 transitions. Second operand 6 states. [2020-09-25 06:48:43,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:43,382 INFO L93 Difference]: Finished difference Result 2776 states and 3717 transitions. [2020-09-25 06:48:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:48:43,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-09-25 06:48:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:43,396 INFO L225 Difference]: With dead ends: 2776 [2020-09-25 06:48:43,396 INFO L226 Difference]: Without dead ends: 1899 [2020-09-25 06:48:43,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 06:48:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-09-25 06:48:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1828. [2020-09-25 06:48:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-09-25 06:48:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2437 transitions. [2020-09-25 06:48:43,471 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2437 transitions. Word has length 149 [2020-09-25 06:48:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:43,472 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 2437 transitions. [2020-09-25 06:48:43,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:48:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2437 transitions. [2020-09-25 06:48:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 06:48:43,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:43,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:43,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:48:43,476 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:43,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1025965989, now seen corresponding path program 1 times [2020-09-25 06:48:43,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:43,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136282775] [2020-09-25 06:48:43,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:43,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:43,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:44,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:45,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:45,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 06:48:45,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:48:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2471 [2020-09-25 06:48:45,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:45,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:48:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:48:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:46,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:48:46,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:46,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:48:46,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:46,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:46,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:46,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:48:46,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:46,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 06:48:46,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:46,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:46,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:46,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:46,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:46,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:46,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136282775] [2020-09-25 06:48:46,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:46,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:46,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670605250] [2020-09-25 06:48:46,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:46,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:46,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:46,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:46,394 INFO L87 Difference]: Start difference. First operand 1828 states and 2437 transitions. Second operand 7 states. [2020-09-25 06:48:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:48,614 INFO L93 Difference]: Finished difference Result 4923 states and 6869 transitions. [2020-09-25 06:48:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:48,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 06:48:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:48,650 INFO L225 Difference]: With dead ends: 4923 [2020-09-25 06:48:48,650 INFO L226 Difference]: Without dead ends: 3110 [2020-09-25 06:48:48,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:48:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2020-09-25 06:48:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 2626. [2020-09-25 06:48:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2626 states. [2020-09-25 06:48:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 3445 transitions. [2020-09-25 06:48:48,773 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 3445 transitions. Word has length 151 [2020-09-25 06:48:48,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:48,774 INFO L479 AbstractCegarLoop]: Abstraction has 2626 states and 3445 transitions. [2020-09-25 06:48:48,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:48,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 3445 transitions. [2020-09-25 06:48:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 06:48:48,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:48,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:48,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:48:48,781 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:48,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1270686682, now seen corresponding path program 1 times [2020-09-25 06:48:48,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:48,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677588301] [2020-09-25 06:48:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:49,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:53,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 06:48:53,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:48:53,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-25 06:48:53,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:53,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:53,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:53,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:48:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:53,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:53,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:54,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:48:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:54,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:54,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:54,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:54,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:54,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 06:48:54,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:54,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:48:54,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:54,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:54,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:54,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 06:48:54,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:54,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:48:54,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:54,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677588301] [2020-09-25 06:48:54,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:54,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:48:54,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396492670] [2020-09-25 06:48:54,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:48:54,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:54,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:48:54,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:48:54,593 INFO L87 Difference]: Start difference. First operand 2626 states and 3445 transitions. Second operand 9 states. [2020-09-25 06:48:59,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:59,366 INFO L93 Difference]: Finished difference Result 5748 states and 7500 transitions. [2020-09-25 06:48:59,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 06:48:59,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2020-09-25 06:48:59,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:59,388 INFO L225 Difference]: With dead ends: 5748 [2020-09-25 06:48:59,388 INFO L226 Difference]: Without dead ends: 3287 [2020-09-25 06:48:59,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-09-25 06:48:59,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2020-09-25 06:48:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2778. [2020-09-25 06:48:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2020-09-25 06:48:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3615 transitions. [2020-09-25 06:48:59,495 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3615 transitions. Word has length 232 [2020-09-25 06:48:59,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:59,497 INFO L479 AbstractCegarLoop]: Abstraction has 2778 states and 3615 transitions. [2020-09-25 06:48:59,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:48:59,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3615 transitions. [2020-09-25 06:48:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 06:48:59,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:59,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:59,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:48:59,505 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:59,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:59,505 INFO L82 PathProgramCache]: Analyzing trace with hash -396992247, now seen corresponding path program 1 times [2020-09-25 06:48:59,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:59,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605653823] [2020-09-25 06:48:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:59,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:59,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:00,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 06:49:04,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:49:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:49:04,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 06:49:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:49:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:04,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:04,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:04,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:04,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:49:04,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:04,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:04,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:49:04,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:04,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 06:49:04,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:04,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:04,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:49:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:04,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:49:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:05,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:05,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:49:05,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:05,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 06:49:05,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:05,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:49:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:05,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605653823] [2020-09-25 06:49:05,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:05,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:49:05,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199007146] [2020-09-25 06:49:05,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:05,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:05,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:05,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:05,115 INFO L87 Difference]: Start difference. First operand 2778 states and 3615 transitions. Second operand 7 states. [2020-09-25 06:49:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:07,704 INFO L93 Difference]: Finished difference Result 6809 states and 9278 transitions. [2020-09-25 06:49:07,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:07,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-09-25 06:49:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:07,728 INFO L225 Difference]: With dead ends: 6809 [2020-09-25 06:49:07,728 INFO L226 Difference]: Without dead ends: 4196 [2020-09-25 06:49:07,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:07,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2020-09-25 06:49:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 3708. [2020-09-25 06:49:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3708 states. [2020-09-25 06:49:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 4741 transitions. [2020-09-25 06:49:07,899 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 4741 transitions. Word has length 241 [2020-09-25 06:49:07,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:07,900 INFO L479 AbstractCegarLoop]: Abstraction has 3708 states and 4741 transitions. [2020-09-25 06:49:07,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:07,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 4741 transitions. [2020-09-25 06:49:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 06:49:07,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:07,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:49:07,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:49:07,909 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:07,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:07,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1330315263, now seen corresponding path program 1 times [2020-09-25 06:49:07,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:07,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127527539] [2020-09-25 06:49:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:07,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking...