/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:36:04,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:36:04,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:36:04,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:36:04,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:36:04,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:36:04,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:36:04,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:36:04,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:36:04,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:36:04,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:36:04,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:36:04,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:36:04,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:36:04,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:36:04,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:36:04,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:36:04,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:36:04,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:36:04,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:36:04,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:36:04,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:36:04,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:36:04,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:36:04,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:36:04,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:36:04,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:36:04,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:36:04,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:36:04,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:36:04,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:36:04,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:36:04,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:36:04,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:36:04,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:36:04,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:36:04,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:36:04,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:36:04,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:36:04,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:36:04,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:36:04,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:36:04,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:36:04,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:36:04,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:36:04,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:36:04,897 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:36:04,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:36:04,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:36:04,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:36:04,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:36:04,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:36:04,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:36:04,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:36:04,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:36:04,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:36:04,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:36:04,901 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:36:04,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:36:04,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:36:04,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:36:04,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:36:04,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:36:04,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:36:04,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:36:04,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:36:04,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:36:04,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:36:04,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:36:04,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:36:04,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:36:04,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:36:05,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:36:05,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:36:05,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:36:05,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:36:05,357 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:36:05,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 13:36:05,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42d2feba4/d60c4c378f744704aacf0a94ccd29274/FLAG851b1c32b [2020-09-25 13:36:06,113 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:36:06,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 13:36:06,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42d2feba4/d60c4c378f744704aacf0a94ccd29274/FLAG851b1c32b [2020-09-25 13:36:06,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42d2feba4/d60c4c378f744704aacf0a94ccd29274 [2020-09-25 13:36:06,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:36:06,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:36:06,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:36:06,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:36:06,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:36:06,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:36:06" (1/1) ... [2020-09-25 13:36:06,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:06, skipping insertion in model container [2020-09-25 13:36:06,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:36:06" (1/1) ... [2020-09-25 13:36:06,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:36:06,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:36:07,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:36:07,111 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:36:07,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:36:07,262 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:36:07,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:07 WrapperNode [2020-09-25 13:36:07,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:36:07,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:36:07,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:36:07,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:36:07,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:07" (1/1) ... [2020-09-25 13:36:07,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:07" (1/1) ... [2020-09-25 13:36:07,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:07" (1/1) ... [2020-09-25 13:36:07,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:07" (1/1) ... [2020-09-25 13:36:07,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:07" (1/1) ... [2020-09-25 13:36:07,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:07" (1/1) ... [2020-09-25 13:36:07,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:07" (1/1) ... [2020-09-25 13:36:07,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:36:07,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:36:07,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:36:07,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:36:07,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:36:07,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:36:07,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:36:07,494 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:36:07,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:36:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:36:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:36:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:36:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:36:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:36:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:36:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:36:09,231 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:36:09,232 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:36:09,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:36:09 BoogieIcfgContainer [2020-09-25 13:36:09,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:36:09,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:36:09,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:36:09,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:36:09,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:36:06" (1/3) ... [2020-09-25 13:36:09,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cc67b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:36:09, skipping insertion in model container [2020-09-25 13:36:09,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:07" (2/3) ... [2020-09-25 13:36:09,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cc67b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:36:09, skipping insertion in model container [2020-09-25 13:36:09,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:36:09" (3/3) ... [2020-09-25 13:36:09,254 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-25 13:36:09,267 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:36:09,278 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:36:09,303 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:36:09,343 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:36:09,343 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:36:09,343 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:36:09,343 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:36:09,343 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:36:09,344 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:36:09,344 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:36:09,344 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:36:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 13:36:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:36:09,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:09,397 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] [2020-09-25 13:36:09,397 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:09,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:09,406 INFO L82 PathProgramCache]: Analyzing trace with hash -496136462, now seen corresponding path program 1 times [2020-09-25 13:36:09,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:09,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803898826] [2020-09-25 13:36:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:09,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:10,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:10,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:36:10,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:36:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-09-25 13:36:10,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:10,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:10,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:36:10,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:36:10,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:36:10,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:10,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:10,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:10,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 13:36:10,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:10,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:36:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:11,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803898826] [2020-09-25 13:36:11,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:11,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:36:11,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156624757] [2020-09-25 13:36:11,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:36:11,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:11,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:36:11,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:36:11,062 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 13:36:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:14,838 INFO L93 Difference]: Finished difference Result 1766 states and 2493 transitions. [2020-09-25 13:36:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:36:14,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 13:36:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:14,872 INFO L225 Difference]: With dead ends: 1766 [2020-09-25 13:36:14,872 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 13:36:14,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 13:36:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2020-09-25 13:36:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 13:36:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1343 transitions. [2020-09-25 13:36:15,009 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1343 transitions. Word has length 69 [2020-09-25 13:36:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:15,010 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1343 transitions. [2020-09-25 13:36:15,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:36:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1343 transitions. [2020-09-25 13:36:15,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 13:36:15,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:15,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:15,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:36:15,023 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:15,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:15,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1110466945, now seen corresponding path program 1 times [2020-09-25 13:36:15,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:15,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861288213] [2020-09-25 13:36:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:15,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:16,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:16,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:20,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 13:36:20,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:36:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:36:20,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:20,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 13:36:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:36:20,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:20,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:20,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:20,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:20,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:36:20,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:20,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:20,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:20,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:20,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:20,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:20,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:36:20,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:20,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 13:36:20,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:20,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:36:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:20,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861288213] [2020-09-25 13:36:20,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:20,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:36:20,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087869766] [2020-09-25 13:36:20,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:36:20,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:20,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:36:20,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:36:20,503 INFO L87 Difference]: Start difference. First operand 995 states and 1343 transitions. Second operand 5 states. [2020-09-25 13:36:22,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:22,847 INFO L93 Difference]: Finished difference Result 2673 states and 3757 transitions. [2020-09-25 13:36:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:36:22,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 13:36:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:22,864 INFO L225 Difference]: With dead ends: 2673 [2020-09-25 13:36:22,864 INFO L226 Difference]: Without dead ends: 1693 [2020-09-25 13:36:22,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:36:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-09-25 13:36:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1276. [2020-09-25 13:36:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-09-25 13:36:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1728 transitions. [2020-09-25 13:36:22,949 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1728 transitions. Word has length 153 [2020-09-25 13:36:22,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:22,952 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1728 transitions. [2020-09-25 13:36:22,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:36:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1728 transitions. [2020-09-25 13:36:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 13:36:22,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:22,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:22,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:36:22,976 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:22,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:22,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1882195166, now seen corresponding path program 1 times [2020-09-25 13:36:22,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:22,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730208395] [2020-09-25 13:36:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:23,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:23,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:24,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:27,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:28,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:28,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 13:36:28,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:36:28,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 13:36:28,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:28,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:36:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 13:36:28,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:28,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:28,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:28,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:28,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:28,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:28,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:36:28,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:28,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:36:28,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:28,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:28,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 13:36:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:28,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 13:36:28,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:28,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 13:36:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:28,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730208395] [2020-09-25 13:36:28,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:28,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:36:28,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567493501] [2020-09-25 13:36:28,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:28,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:28,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:28,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:28,678 INFO L87 Difference]: Start difference. First operand 1276 states and 1728 transitions. Second operand 7 states. [2020-09-25 13:36:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:31,353 INFO L93 Difference]: Finished difference Result 2981 states and 4163 transitions. [2020-09-25 13:36:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:36:31,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-09-25 13:36:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:31,366 INFO L225 Difference]: With dead ends: 2981 [2020-09-25 13:36:31,366 INFO L226 Difference]: Without dead ends: 1720 [2020-09-25 13:36:31,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:36:31,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-09-25 13:36:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1481. [2020-09-25 13:36:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-09-25 13:36:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1947 transitions. [2020-09-25 13:36:31,457 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1947 transitions. Word has length 221 [2020-09-25 13:36:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:31,458 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 1947 transitions. [2020-09-25 13:36:31,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1947 transitions. [2020-09-25 13:36:31,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 13:36:31,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:31,465 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:31,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:36:31,465 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:31,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:31,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1752227672, now seen corresponding path program 1 times [2020-09-25 13:36:31,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:31,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737306036] [2020-09-25 13:36:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:31,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:31,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:32,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:36,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:36,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 13:36:36,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:36:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:36:36,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:36,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:36:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 13:36:36,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:36,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:36,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:36,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:36,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:36:36,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:36,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:36,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:36:36,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:36,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:36,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:36,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:36,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:36:36,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 13:36:36,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:36,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:36:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:36:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:36:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:36:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:36,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:37,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:37,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 13:36:37,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:37,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 13:36:37,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:37,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 13:36:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 171 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:37,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737306036] [2020-09-25 13:36:37,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:37,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:36:37,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694956013] [2020-09-25 13:36:37,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:36:37,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:37,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:36:37,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:36:37,178 INFO L87 Difference]: Start difference. First operand 1481 states and 1947 transitions. Second operand 10 states. [2020-09-25 13:36:44,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:44,930 INFO L93 Difference]: Finished difference Result 4940 states and 7141 transitions. [2020-09-25 13:36:44,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:36:44,931 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 250 [2020-09-25 13:36:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:44,956 INFO L225 Difference]: With dead ends: 4940 [2020-09-25 13:36:44,957 INFO L226 Difference]: Without dead ends: 3474 [2020-09-25 13:36:44,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:36:44,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3474 states. [2020-09-25 13:36:45,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3474 to 3242. [2020-09-25 13:36:45,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3242 states. [2020-09-25 13:36:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4232 transitions. [2020-09-25 13:36:45,104 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4232 transitions. Word has length 250 [2020-09-25 13:36:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:45,104 INFO L479 AbstractCegarLoop]: Abstraction has 3242 states and 4232 transitions. [2020-09-25 13:36:45,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:36:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4232 transitions. [2020-09-25 13:36:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-25 13:36:45,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:45,116 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:45,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:36:45,116 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:45,117 INFO L82 PathProgramCache]: Analyzing trace with hash -32311981, now seen corresponding path program 1 times [2020-09-25 13:36:45,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:45,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113960228] [2020-09-25 13:36:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:45,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:45,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:50,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:50,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-09-25 13:36:50,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:36:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:36:50,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:50,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 13:36:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 13:36:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:50,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:50,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:50,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:50,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:50,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:36:50,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:50,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:50,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:50,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:50,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:50,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:50,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:36:50,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:50,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 13:36:50,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:50,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:50,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:50,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:36:50,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:50,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 13:36:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:50,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:50,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 13:36:50,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 13:36:50,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:50,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 13:36:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:50,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113960228] [2020-09-25 13:36:50,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:50,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:36:50,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028405765] [2020-09-25 13:36:50,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:50,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:50,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:50,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:50,708 INFO L87 Difference]: Start difference. First operand 3242 states and 4232 transitions. Second operand 7 states. [2020-09-25 13:36:54,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:54,455 INFO L93 Difference]: Finished difference Result 7244 states and 9782 transitions. [2020-09-25 13:36:54,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:36:54,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-09-25 13:36:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:54,477 INFO L225 Difference]: With dead ends: 7244 [2020-09-25 13:36:54,477 INFO L226 Difference]: Without dead ends: 4017 [2020-09-25 13:36:54,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:36:54,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2020-09-25 13:36:54,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 2997. [2020-09-25 13:36:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2997 states. [2020-09-25 13:36:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 3884 transitions. [2020-09-25 13:36:54,580 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 3884 transitions. Word has length 303 [2020-09-25 13:36:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:54,581 INFO L479 AbstractCegarLoop]: Abstraction has 2997 states and 3884 transitions. [2020-09-25 13:36:54,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:54,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 3884 transitions. [2020-09-25 13:36:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-09-25 13:36:54,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:54,592 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:54,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:36:54,593 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:54,593 INFO L82 PathProgramCache]: Analyzing trace with hash -244094475, now seen corresponding path program 1 times [2020-09-25 13:36:54,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:54,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606116533] [2020-09-25 13:36:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:54,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:54,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking...