/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=WIDEST --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_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:23:12,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:23:12,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:23:12,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:23:12,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:23:12,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:23:12,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:23:12,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:23:12,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:23:12,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:23:12,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:23:12,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:23:12,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:23:12,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:23:12,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:23:12,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:23:12,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:23:12,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:23:12,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:23:12,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:23:12,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:23:12,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:23:12,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:23:12,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:23:12,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:23:12,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:23:12,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:23:12,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:23:12,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:23:12,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:23:12,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:23:12,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:23:12,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:23:12,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:23:12,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:23:12,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:23:12,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:23:12,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:23:12,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:23:12,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:23:12,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:23:12,751 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 03:23:12,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:23:12,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:23:12,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:23:12,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:23:12,802 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:23:12,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:23:12,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:23:12,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:23:12,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:23:12,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:23:12,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:23:12,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:23:12,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:23:12,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:23:12,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:23:12,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:23:12,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:23:12,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:23:12,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:23:12,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:23:12,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:23:12,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:23:12,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:23:12,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:23:12,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:23:12,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:23:12,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:23:12,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:23:12,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:23:12,808 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:23:13,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:23:13,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:23:13,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:23:13,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:23:13,281 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:23:13,282 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 03:23:13,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7b78bcb9/e30e1d39037a44ceaf089bc942f5d250/FLAGfda1a8633 [2020-09-25 03:23:13,996 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:23:13,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 03:23:14,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7b78bcb9/e30e1d39037a44ceaf089bc942f5d250/FLAGfda1a8633 [2020-09-25 03:23:14,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7b78bcb9/e30e1d39037a44ceaf089bc942f5d250 [2020-09-25 03:23:14,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:23:14,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:23:14,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:23:14,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:23:14,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:23:14,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:23:14" (1/1) ... [2020-09-25 03:23:14,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:14, skipping insertion in model container [2020-09-25 03:23:14,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:23:14" (1/1) ... [2020-09-25 03:23:14,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:23:14,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:23:14,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:23:14,875 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:23:15,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:23:15,193 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:23:15,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15 WrapperNode [2020-09-25 03:23:15,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:23:15,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:23:15,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:23:15,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:23:15,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ... [2020-09-25 03:23:15,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ... [2020-09-25 03:23:15,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ... [2020-09-25 03:23:15,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ... [2020-09-25 03:23:15,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ... [2020-09-25 03:23:15,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ... [2020-09-25 03:23:15,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ... [2020-09-25 03:23:15,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:23:15,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:23:15,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:23:15,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:23:15,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (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 03:23:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:23:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:23:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 03:23:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:23:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 03:23:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:23:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:23:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:23:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:23:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:23:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:23:17,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:23:17,036 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:23:17,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:23:17 BoogieIcfgContainer [2020-09-25 03:23:17,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:23:17,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:23:17,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:23:17,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:23:17,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:23:14" (1/3) ... [2020-09-25 03:23:17,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dec0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:23:17, skipping insertion in model container [2020-09-25 03:23:17,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (2/3) ... [2020-09-25 03:23:17,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dec0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:23:17, skipping insertion in model container [2020-09-25 03:23:17,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:23:17" (3/3) ... [2020-09-25 03:23:17,057 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-25 03:23:17,069 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:23:17,081 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:23:17,104 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:23:17,142 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:23:17,142 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:23:17,142 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:23:17,142 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:23:17,143 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:23:17,143 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:23:17,143 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:23:17,143 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:23:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 03:23:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 03:23:17,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:17,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:23:17,193 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:17,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:17,202 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-25 03:23:17,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:17,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836172546] [2020-09-25 03:23:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:17,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:18,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:18,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 03:23:18,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:23:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-09-25 03:23:18,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:23:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:23:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 03:23:18,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:23:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:18,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:18,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:18,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:23:18,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:18,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:23:18,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:23:18,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:18,277 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 03:23:18,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836172546] [2020-09-25 03:23:18,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:18,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:23:18,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517240099] [2020-09-25 03:23:18,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:23:18,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:18,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:23:18,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:23:18,311 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 03:23:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:22,261 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 03:23:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:23:22,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 03:23:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:22,295 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 03:23:22,295 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 03:23:22,342 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 03:23:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 03:23:22,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 03:23:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 03:23:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 03:23:22,483 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 73 [2020-09-25 03:23:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:22,484 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 03:23:22,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:23:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 03:23:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 03:23:22,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:22,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:23:22,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:23:22,495 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:22,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:22,495 INFO L82 PathProgramCache]: Analyzing trace with hash -893839862, now seen corresponding path program 1 times [2020-09-25 03:23:22,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:22,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484879810] [2020-09-25 03:23:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:22,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:25,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:26,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:26,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 03:23:26,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:23:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3479 [2020-09-25 03:23:26,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:23:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:23:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 03:23:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:26,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:26,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:26,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:26,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:23:26,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:26,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 03:23:26,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:23:26,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:23:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:26,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:26,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:26,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 03:23:26,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:23:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 03:23:26,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:23:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:23:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 03:23:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 03:23:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:23:26,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484879810] [2020-09-25 03:23:26,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:23:26,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:23:26,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775891474] [2020-09-25 03:23:26,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:23:26,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:26,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:23:26,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:23:26,903 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 8 states. [2020-09-25 03:23:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:31,447 INFO L93 Difference]: Finished difference Result 1565 states and 2022 transitions. [2020-09-25 03:23:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:23:31,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 160 [2020-09-25 03:23:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:31,459 INFO L225 Difference]: With dead ends: 1565 [2020-09-25 03:23:31,459 INFO L226 Difference]: Without dead ends: 1563 [2020-09-25 03:23:31,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:23:31,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2020-09-25 03:23:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1192. [2020-09-25 03:23:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-09-25 03:23:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1554 transitions. [2020-09-25 03:23:31,510 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1554 transitions. Word has length 160 [2020-09-25 03:23:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:31,512 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1554 transitions. [2020-09-25 03:23:31,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:23:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1554 transitions. [2020-09-25 03:23:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 03:23:31,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:31,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:23:31,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:23:31,517 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:31,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:31,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2120468014, now seen corresponding path program 1 times [2020-09-25 03:23:31,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:31,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133056022] [2020-09-25 03:23:31,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:31,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:31,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:33,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:35,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:35,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 03:23:35,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:23:35,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3875 [2020-09-25 03:23:35,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:23:35,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:23:35,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 03:23:35,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:35,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:35,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:35,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:35,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:23:35,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:35,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:23:35,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:35,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:23:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:23:35,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:23:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:35,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:35,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 03:23:35,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 03:23:35,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:23:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:23:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 03:23:35,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:23:35,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133056022] [2020-09-25 03:23:35,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:35,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:23:35,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033058776] [2020-09-25 03:23:35,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:23:35,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:35,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:23:35,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:23:35,880 INFO L87 Difference]: Start difference. First operand 1192 states and 1554 transitions. Second operand 7 states. [2020-09-25 03:23:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:38,908 INFO L93 Difference]: Finished difference Result 3030 states and 4085 transitions. [2020-09-25 03:23:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:23:38,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 03:23:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:38,921 INFO L225 Difference]: With dead ends: 3030 [2020-09-25 03:23:38,921 INFO L226 Difference]: Without dead ends: 1853 [2020-09-25 03:23:38,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 03:23:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2020-09-25 03:23:38,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1779. [2020-09-25 03:23:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2020-09-25 03:23:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2253 transitions. [2020-09-25 03:23:38,992 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2253 transitions. Word has length 181 [2020-09-25 03:23:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:38,993 INFO L479 AbstractCegarLoop]: Abstraction has 1779 states and 2253 transitions. [2020-09-25 03:23:38,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:23:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2253 transitions. [2020-09-25 03:23:39,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-09-25 03:23:39,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:39,002 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:23:39,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:23:39,002 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:39,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:39,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1634682488, now seen corresponding path program 1 times [2020-09-25 03:23:39,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:39,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307882163] [2020-09-25 03:23:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:39,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:39,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:40,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:44,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:44,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-09-25 03:23:44,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:23:44,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 03:23:44,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:23:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 03:23:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 03:23:44,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:44,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:44,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:44,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:23:44,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:44,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:23:44,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:23:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:44,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:44,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:23:44,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 03:23:44,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:23:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 03:23:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 27 [2020-09-25 03:23:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 03:23:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:44,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:44,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:44,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 03:23:44,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 03:23:44,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:23:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:23:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 03:23:44,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:23:45,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307882163] [2020-09-25 03:23:45,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:23:45,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:23:45,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567522579] [2020-09-25 03:23:45,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:23:45,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:45,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:23:45,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:23:45,625 INFO L87 Difference]: Start difference. First operand 1779 states and 2253 transitions. Second operand 9 states. [2020-09-25 03:23:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:51,774 INFO L93 Difference]: Finished difference Result 4710 states and 6058 transitions. [2020-09-25 03:23:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:23:51,774 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 331 [2020-09-25 03:23:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:51,792 INFO L225 Difference]: With dead ends: 4710 [2020-09-25 03:23:51,793 INFO L226 Difference]: Without dead ends: 2946 [2020-09-25 03:23:51,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:23:51,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-09-25 03:23:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2551. [2020-09-25 03:23:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2551 states. [2020-09-25 03:23:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2551 states to 2551 states and 3301 transitions. [2020-09-25 03:23:51,883 INFO L78 Accepts]: Start accepts. Automaton has 2551 states and 3301 transitions. Word has length 331 [2020-09-25 03:23:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:51,884 INFO L479 AbstractCegarLoop]: Abstraction has 2551 states and 3301 transitions. [2020-09-25 03:23:51,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:23:51,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2551 states and 3301 transitions. [2020-09-25 03:23:51,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-09-25 03:23:51,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:51,893 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 03:23:51,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:23:51,894 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:51,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:51,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1813149944, now seen corresponding path program 1 times [2020-09-25 03:23:51,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:51,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954679086] [2020-09-25 03:23:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:52,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:55,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:56,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:57,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:57,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-09-25 03:23:57,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:23:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-09-25 03:23:57,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:23:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:23:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-09-25 03:23:57,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:57,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:57,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:57,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:23:57,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:57,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 03:23:57,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:23:57,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:57,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:23:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:57,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:57,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:57,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 03:23:57,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:23:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 03:23:57,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:23:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:23:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 03:23:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:57,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 03:23:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:57,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:57,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:57,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 03:23:57,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:57,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-25 03:23:57,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:57,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:23:57,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:23:57,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 03:23:57,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 03:23:58,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954679086] [2020-09-25 03:23:58,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:23:58,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:23:58,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779058684] [2020-09-25 03:23:58,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:23:58,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:58,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:23:58,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:23:58,263 INFO L87 Difference]: Start difference. First operand 2551 states and 3301 transitions. Second operand 8 states. [2020-09-25 03:24:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:24:01,468 INFO L93 Difference]: Finished difference Result 5913 states and 7659 transitions. [2020-09-25 03:24:01,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:24:01,469 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 367 [2020-09-25 03:24:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:24:01,488 INFO L225 Difference]: With dead ends: 5913 [2020-09-25 03:24:01,488 INFO L226 Difference]: Without dead ends: 3377 [2020-09-25 03:24:01,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:24:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2020-09-25 03:24:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 2937. [2020-09-25 03:24:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2937 states. [2020-09-25 03:24:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 3777 transitions. [2020-09-25 03:24:01,569 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 3777 transitions. Word has length 367 [2020-09-25 03:24:01,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:24:01,570 INFO L479 AbstractCegarLoop]: Abstraction has 2937 states and 3777 transitions. [2020-09-25 03:24:01,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:24:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 3777 transitions. [2020-09-25 03:24:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-09-25 03:24:01,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:24:01,583 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 03:24:01,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:24:01,583 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:24:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:24:01,584 INFO L82 PathProgramCache]: Analyzing trace with hash -93474599, now seen corresponding path program 1 times [2020-09-25 03:24:01,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:24:01,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921380733] [2020-09-25 03:24:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:24:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:02,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:02,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking...