/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/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:49:04,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:49:04,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:49:04,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:49:04,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:49:04,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:49:04,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:49:04,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:49:04,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:49:04,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:49:04,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:49:04,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:49:04,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:49:04,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:49:04,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:49:04,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:49:04,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:49:04,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:49:04,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:49:04,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:49:04,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:49:04,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:49:04,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:49:04,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:49:04,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:49:04,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:49:04,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:49:04,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:49:04,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:49:04,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:49:04,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:49:04,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:49:04,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:49:04,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:49:04,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:49:04,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:49:04,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:49:04,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:49:04,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:49:04,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:49:04,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:49:04,249 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 06:49:04,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:49:04,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:49:04,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:49:04,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:49:04,309 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:49:04,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:49:04,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:49:04,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:49:04,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:49:04,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:49:04,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:49:04,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:49:04,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:49:04,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:49:04,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:49:04,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:49:04,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:49:04,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:49:04,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:49:04,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:49:04,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:49:04,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:49:04,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:49:04,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:49:04,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:49:04,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:49:04,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:49:04,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:49:04,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:49:04,316 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 06:49:04,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:49:04,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:49:04,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:49:04,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:49:04,842 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:49:04,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 06:49:04,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8efb55edc/7a5f19600fa440c3b44e0ade5919fa29/FLAG4d00e17f2 [2020-09-25 06:49:05,575 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:49:05,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 06:49:05,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8efb55edc/7a5f19600fa440c3b44e0ade5919fa29/FLAG4d00e17f2 [2020-09-25 06:49:05,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8efb55edc/7a5f19600fa440c3b44e0ade5919fa29 [2020-09-25 06:49:05,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:49:05,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:49:05,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:49:05,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:49:05,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:49:05,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:49:05" (1/1) ... [2020-09-25 06:49:05,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9ac829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:05, skipping insertion in model container [2020-09-25 06:49:05,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:49:05" (1/1) ... [2020-09-25 06:49:05,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:49:05,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:49:06,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:49:06,537 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:49:06,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:49:06,697 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:49:06,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:06 WrapperNode [2020-09-25 06:49:06,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:49:06,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:49:06,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:49:06,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:49:06,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:06" (1/1) ... [2020-09-25 06:49:06,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:06" (1/1) ... [2020-09-25 06:49:06,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:06" (1/1) ... [2020-09-25 06:49:06,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:06" (1/1) ... [2020-09-25 06:49:06,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:06" (1/1) ... [2020-09-25 06:49:06,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:06" (1/1) ... [2020-09-25 06:49:06,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:06" (1/1) ... [2020-09-25 06:49:06,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:49:06,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:49:06,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:49:06,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:49:06,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:06" (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 06:49:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:49:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:49:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:49:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:49:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:49:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:49:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:49:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:49:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:49:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:49:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:49:08,728 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:49:08,728 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:49:08,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:49:08 BoogieIcfgContainer [2020-09-25 06:49:08,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:49:08,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:49:08,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:49:08,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:49:08,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:49:05" (1/3) ... [2020-09-25 06:49:08,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728cd5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:49:08, skipping insertion in model container [2020-09-25 06:49:08,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:06" (2/3) ... [2020-09-25 06:49:08,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728cd5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:49:08, skipping insertion in model container [2020-09-25 06:49:08,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:49:08" (3/3) ... [2020-09-25 06:49:08,750 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-25 06:49:08,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:49:08,775 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:49:08,800 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:49:08,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:49:08,836 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:49:08,836 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:49:08,836 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:49:08,836 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:49:08,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:49:08,837 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:49:08,837 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:49:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 06:49:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 06:49:08,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:08,886 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 06:49:08,887 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:08,895 INFO L82 PathProgramCache]: Analyzing trace with hash -496136462, now seen corresponding path program 1 times [2020-09-25 06:49:08,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:08,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321236662] [2020-09-25 06:49:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:10,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:10,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:49:10,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:49:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1148 [2020-09-25 06:49:10,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:10,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:49:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:49:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:49:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:10,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:10,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:10,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:10,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:49:10,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:10,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:49:10,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:10,461 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 06:49:10,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321236662] [2020-09-25 06:49:10,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:10,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:49:10,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561108794] [2020-09-25 06:49:10,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:49:10,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:10,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:49:10,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:49:10,494 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 06:49:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:14,573 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 06:49:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:49:14,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 06:49:14,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:14,613 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 06:49:14,613 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 06:49:14,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 06:49:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 06:49:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 06:49:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 06:49:14,781 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 69 [2020-09-25 06:49:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:14,782 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 06:49:14,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:49:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 06:49:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 06:49:14,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:14,826 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] [2020-09-25 06:49:14,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:49:14,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:14,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:14,827 INFO L82 PathProgramCache]: Analyzing trace with hash -112077510, now seen corresponding path program 1 times [2020-09-25 06:49:14,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:14,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24508612] [2020-09-25 06:49:14,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:14,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:15,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:15,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:19,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 06:49:19,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:49:19,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4475 [2020-09-25 06:49:19,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:19,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:49:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 06:49:19,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:19,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:19,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:19,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:19,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:49:19,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:19,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:49:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:19,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:19,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:19,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 06:49:19,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:19,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 06:49:19,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:19,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 06:49:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:19,740 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 06:49:19,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24508612] [2020-09-25 06:49:19,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:19,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:19,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895588007] [2020-09-25 06:49:19,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:19,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:19,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:19,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:19,745 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 7 states. [2020-09-25 06:49:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:22,794 INFO L93 Difference]: Finished difference Result 2622 states and 3398 transitions. [2020-09-25 06:49:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:49:22,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 06:49:22,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:22,814 INFO L225 Difference]: With dead ends: 2622 [2020-09-25 06:49:22,814 INFO L226 Difference]: Without dead ends: 1640 [2020-09-25 06:49:22,820 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 06:49:22,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-09-25 06:49:22,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1580. [2020-09-25 06:49:22,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-09-25 06:49:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 1958 transitions. [2020-09-25 06:49:22,895 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 1958 transitions. Word has length 156 [2020-09-25 06:49:22,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:22,897 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 1958 transitions. [2020-09-25 06:49:22,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:22,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 1958 transitions. [2020-09-25 06:49:22,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 06:49:22,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:22,915 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] [2020-09-25 06:49:22,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:49:22,916 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:22,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:22,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1495357989, now seen corresponding path program 1 times [2020-09-25 06:49:22,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:22,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333662508] [2020-09-25 06:49:22,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:22,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:23,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:26,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:26,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:27,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 06:49:27,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:49:27,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:49:27,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:27,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:49:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 06:49:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 06:49:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:28,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:28,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:28,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:28,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:49:28,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:28,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:28,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:28,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:28,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:28,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:49:28,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:28,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 06:49:28,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:28,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:49:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 06:49:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:28,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 06:49:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:28,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:28,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 06:49:28,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 06:49:28,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:28,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 06:49:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:28,521 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 06:49:28,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333662508] [2020-09-25 06:49:28,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:28,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:49:28,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015602194] [2020-09-25 06:49:28,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:49:28,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:28,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:49:28,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:49:28,531 INFO L87 Difference]: Start difference. First operand 1580 states and 1958 transitions. Second operand 8 states. [2020-09-25 06:49:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:33,055 INFO L93 Difference]: Finished difference Result 4660 states and 6175 transitions. [2020-09-25 06:49:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:49:33,057 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 238 [2020-09-25 06:49:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:33,085 INFO L225 Difference]: With dead ends: 4660 [2020-09-25 06:49:33,085 INFO L226 Difference]: Without dead ends: 3095 [2020-09-25 06:49:33,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:49:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2020-09-25 06:49:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3010. [2020-09-25 06:49:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3010 states. [2020-09-25 06:49:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 3851 transitions. [2020-09-25 06:49:33,219 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 3851 transitions. Word has length 238 [2020-09-25 06:49:33,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:33,221 INFO L479 AbstractCegarLoop]: Abstraction has 3010 states and 3851 transitions. [2020-09-25 06:49:33,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:49:33,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 3851 transitions. [2020-09-25 06:49:33,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-25 06:49:33,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:33,230 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] [2020-09-25 06:49:33,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:49:33,231 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:33,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1357265018, now seen corresponding path program 1 times [2020-09-25 06:49:33,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:33,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731313531] [2020-09-25 06:49:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:33,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:36,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:38,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:38,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-09-25 06:49:38,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:49:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:49:38,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:38,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:49:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 06:49:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 06:49:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:38,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:38,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:38,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:38,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:38,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:49:38,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:38,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:38,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:38,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:38,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:38,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:49:38,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:38,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:38,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:49:38,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:38,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 06:49:38,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:38,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:38,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:49:38,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:38,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 06:49:38,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 06:49:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:38,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:38,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:38,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 06:49:38,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 06:49:38,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:38,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:38,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 06:49:38,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:39,105 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 06:49:39,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731313531] [2020-09-25 06:49:39,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:39,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:49:39,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356724402] [2020-09-25 06:49:39,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:49:39,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:39,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:49:39,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:49:39,110 INFO L87 Difference]: Start difference. First operand 3010 states and 3851 transitions. Second operand 8 states. [2020-09-25 06:49:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:44,001 INFO L93 Difference]: Finished difference Result 5919 states and 7647 transitions. [2020-09-25 06:49:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:49:44,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 274 [2020-09-25 06:49:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:44,021 INFO L225 Difference]: With dead ends: 5919 [2020-09-25 06:49:44,022 INFO L226 Difference]: Without dead ends: 2924 [2020-09-25 06:49:44,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:49:44,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-09-25 06:49:44,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2772. [2020-09-25 06:49:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2772 states. [2020-09-25 06:49:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 3532 transitions. [2020-09-25 06:49:44,106 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 3532 transitions. Word has length 274 [2020-09-25 06:49:44,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:44,107 INFO L479 AbstractCegarLoop]: Abstraction has 2772 states and 3532 transitions. [2020-09-25 06:49:44,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:49:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 3532 transitions. [2020-09-25 06:49:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-09-25 06:49:44,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:44,117 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, 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] [2020-09-25 06:49:44,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:49:44,117 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:44,118 INFO L82 PathProgramCache]: Analyzing trace with hash -167989134, now seen corresponding path program 1 times [2020-09-25 06:49:44,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:44,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541625397] [2020-09-25 06:49:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:44,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:44,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:46,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:46,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:46,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:49,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:49,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:49,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-09-25 06:49:49,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:49:49,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:49:49,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:49,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:49,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:49,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 06:49:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 06:49:49,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:49,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:49,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:49,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:49,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:49:49,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:49,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:49,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:49,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:49,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:49:49,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:49,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 06:49:49,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:49,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 06:49:49,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:49,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 06:49:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:49,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:49,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:49,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 06:49:49,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:49,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 06:49:49,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:49,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 06:49:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:49,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541625397] [2020-09-25 06:49:49,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:49,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:49:49,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746222358] [2020-09-25 06:49:49,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:49,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:49,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:49,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:49,843 INFO L87 Difference]: Start difference. First operand 2772 states and 3532 transitions. Second operand 7 states. [2020-09-25 06:49:52,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:52,834 INFO L93 Difference]: Finished difference Result 6573 states and 8525 transitions. [2020-09-25 06:49:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:52,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-09-25 06:49:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:52,855 INFO L225 Difference]: With dead ends: 6573 [2020-09-25 06:49:52,855 INFO L226 Difference]: Without dead ends: 3816 [2020-09-25 06:49:52,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:52,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2020-09-25 06:49:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3775. [2020-09-25 06:49:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3775 states. [2020-09-25 06:49:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 4664 transitions. [2020-09-25 06:49:52,954 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 4664 transitions. Word has length 306 [2020-09-25 06:49:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:52,955 INFO L479 AbstractCegarLoop]: Abstraction has 3775 states and 4664 transitions. [2020-09-25 06:49:52,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 4664 transitions. [2020-09-25 06:49:52,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-09-25 06:49:52,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:52,968 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:52,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:49:52,968 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:52,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:52,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1771496692, now seen corresponding path program 1 times [2020-09-25 06:49:52,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:52,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309934969] [2020-09-25 06:49:52,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:53,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:53,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:54,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking...