/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:58:41,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:58:41,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:58:41,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:58:41,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:58:41,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:58:41,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:58:41,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:58:41,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:58:41,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:58:41,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:58:41,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:58:41,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:58:41,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:58:41,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:58:41,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:58:41,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:58:41,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:58:41,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:58:41,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:58:41,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:58:41,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:58:41,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:58:41,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:58:41,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:58:41,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:58:41,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:58:41,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:58:41,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:58:41,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:58:41,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:58:41,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:58:41,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:58:41,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:58:41,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:58:41,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:58:41,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:58:41,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:58:41,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:58:41,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:58:41,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:58:41,747 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 [2020-09-24 23:58:41,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:58:41,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:58:41,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:58:41,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:58:41,796 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:58:41,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:58:41,796 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:58:41,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:58:41,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:58:41,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:58:41,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:58:41,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:58:41,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:58:41,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:58:41,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:58:41,799 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:58:41,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:58:41,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:58:41,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:58:41,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:58:41,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:58:41,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:58:41,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:58:41,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:58:41,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:58:41,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:58:41,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:58:41,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:58:41,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:58:41,802 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:58:42,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:58:42,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:58:42,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:58:42,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:58:42,280 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:58:42,281 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-24 23:58:42,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03a9b96cc/38f3039a788d42b38aa8588ee76fb816/FLAG8fc5dfeba [2020-09-24 23:58:43,014 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:58:43,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-24 23:58:43,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03a9b96cc/38f3039a788d42b38aa8588ee76fb816/FLAG8fc5dfeba [2020-09-24 23:58:43,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03a9b96cc/38f3039a788d42b38aa8588ee76fb816 [2020-09-24 23:58:43,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:58:43,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:58:43,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:58:43,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:58:43,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:58:43,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:58:43" (1/1) ... [2020-09-24 23:58:43,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:43, skipping insertion in model container [2020-09-24 23:58:43,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:58:43" (1/1) ... [2020-09-24 23:58:43,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:58:43,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:58:43,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:58:43,811 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:58:44,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:58:44,064 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:58:44,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:44 WrapperNode [2020-09-24 23:58:44,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:58:44,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:58:44,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:58:44,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:58:44,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:44" (1/1) ... [2020-09-24 23:58:44,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:44" (1/1) ... [2020-09-24 23:58:44,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:44" (1/1) ... [2020-09-24 23:58:44,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:44" (1/1) ... [2020-09-24 23:58:44,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:44" (1/1) ... [2020-09-24 23:58:44,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:44" (1/1) ... [2020-09-24 23:58:44,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:44" (1/1) ... [2020-09-24 23:58:44,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:58:44,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:58:44,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:58:44,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:58:44,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:44" (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 [2020-09-24 23:58:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:58:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:58:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 23:58:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:58:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 23:58:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:58:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:58:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 23:58:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:58:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:58:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:58:45,749 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:58:45,750 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 23:58:45,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:58:45 BoogieIcfgContainer [2020-09-24 23:58:45,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:58:45,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:58:45,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:58:45,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:58:45,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:58:43" (1/3) ... [2020-09-24 23:58:45,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:58:45, skipping insertion in model container [2020-09-24 23:58:45,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:58:44" (2/3) ... [2020-09-24 23:58:45,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:58:45, skipping insertion in model container [2020-09-24 23:58:45,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:58:45" (3/3) ... [2020-09-24 23:58:45,770 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label15.c [2020-09-24 23:58:45,784 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:58:45,796 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:58:45,821 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:58:45,858 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:58:45,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:58:45,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:58:45,859 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:58:45,859 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:58:45,859 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:58:45,859 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:58:45,860 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:58:45,893 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 23:58:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 23:58:45,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:58:45,904 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] [2020-09-24 23:58:45,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:58:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:58:45,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1814812065, now seen corresponding path program 1 times [2020-09-24 23:58:45,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:58:45,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-24 23:58:45,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:58:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:58:46,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:58:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 23:58:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:58:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-09-24 23:58:46,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:58:46,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:58:46,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:58:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:58:46,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:58:46,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:58:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:58:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:46,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:58:46,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:58:46,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:58:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 23:58:46,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:58:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:58:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:58:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:58:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:58:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:58:46,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-24 23:58:46,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:58:46,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:58:46,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749334648] [2020-09-24 23:58:46,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:58:46,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:58:46,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:58:46,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:58:46,904 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 23:58:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:58:48,907 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-24 23:58:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:58:48,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-24 23:58:48,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:58:48,955 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 23:58:48,955 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 23:58:48,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:58:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 23:58:49,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-24 23:58:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-24 23:58:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-24 23:58:49,069 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 29 [2020-09-24 23:58:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:58:49,070 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-24 23:58:49,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:58:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-24 23:58:49,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-24 23:58:49,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:58:49,089 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 23:58:49,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:58:49,090 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:58:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:58:49,094 INFO L82 PathProgramCache]: Analyzing trace with hash -908534672, now seen corresponding path program 1 times [2020-09-24 23:58:49,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:58:49,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870065883] [2020-09-24 23:58:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:58:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:58:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:49,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:51,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:58:51,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 23:58:51,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:58:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2417 [2020-09-24 23:58:51,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:58:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:58:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:58:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 23:58:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:58:51,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:58:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:58:51,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:51,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:58:51,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:58:51,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:58:51,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 23:58:51,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:58:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:58:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:58:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:58:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:58:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 23:58:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:58:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:51,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:58:52,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:58:52,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 23:58:52,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:58:52,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-24 23:58:52,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:58:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:58:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:58:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:58:52,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 23:58:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:58:52,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870065883] [2020-09-24 23:58:52,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:58:52,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:58:52,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713383781] [2020-09-24 23:58:52,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:58:52,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:58:52,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:58:52,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:58:52,325 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-24 23:59:00,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:59:00,066 INFO L93 Difference]: Finished difference Result 1286 states and 1594 transitions. [2020-09-24 23:59:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:59:00,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-09-24 23:59:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:59:00,074 INFO L225 Difference]: With dead ends: 1286 [2020-09-24 23:59:00,074 INFO L226 Difference]: Without dead ends: 757 [2020-09-24 23:59:00,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-09-24 23:59:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-09-24 23:59:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 695. [2020-09-24 23:59:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 23:59:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 859 transitions. [2020-09-24 23:59:00,138 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 859 transitions. Word has length 108 [2020-09-24 23:59:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:59:00,141 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 859 transitions. [2020-09-24 23:59:00,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:59:00,142 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 859 transitions. [2020-09-24 23:59:00,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 23:59:00,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:59:00,162 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-24 23:59:00,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:59:00,163 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:59:00,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:59:00,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1682680010, now seen corresponding path program 1 times [2020-09-24 23:59:00,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:59:00,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527234443] [2020-09-24 23:59:00,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:59:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:00,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:02,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:02,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 23:59:02,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:59:02,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1908 [2020-09-24 23:59:02,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:59:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 23:59:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 23:59:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:02,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:59:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:02,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:02,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:59:02,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:59:02,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:59:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:59:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:59:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:02,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 23:59:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:02,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:02,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 23:59:02,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 23:59:02,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:59:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:59:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 23:59:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 23:59:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:02,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:02,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 23:59:02,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-24 23:59:02,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:59:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:59:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 23:59:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:59:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 23:59:02,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527234443] [2020-09-24 23:59:02,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:59:02,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:59:02,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275772859] [2020-09-24 23:59:02,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:59:02,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:59:02,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:59:02,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:59:02,931 INFO L87 Difference]: Start difference. First operand 695 states and 859 transitions. Second operand 7 states. [2020-09-24 23:59:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:59:05,414 INFO L93 Difference]: Finished difference Result 1565 states and 2075 transitions. [2020-09-24 23:59:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:59:05,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-09-24 23:59:05,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:59:05,428 INFO L225 Difference]: With dead ends: 1565 [2020-09-24 23:59:05,428 INFO L226 Difference]: Without dead ends: 1035 [2020-09-24 23:59:05,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:59:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-09-24 23:59:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1005. [2020-09-24 23:59:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-09-24 23:59:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1295 transitions. [2020-09-24 23:59:05,472 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1295 transitions. Word has length 237 [2020-09-24 23:59:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:59:05,473 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1295 transitions. [2020-09-24 23:59:05,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:59:05,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1295 transitions. [2020-09-24 23:59:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-24 23:59:05,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:59:05,477 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-24 23:59:05,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:59:05,478 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:59:05,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:59:05,478 INFO L82 PathProgramCache]: Analyzing trace with hash -750651840, now seen corresponding path program 1 times [2020-09-24 23:59:05,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:59:05,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739843649] [2020-09-24 23:59:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:59:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:05,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:05,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:08,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:08,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 23:59:08,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:59:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3418 [2020-09-24 23:59:08,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:59:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:59:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-09-24 23:59:08,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:09,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:59:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:09,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:09,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:59:09,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:09,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:59:09,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:59:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:59:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:59:09,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:09,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 23:59:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:09,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:09,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 23:59:09,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:09,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 23:59:09,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:09,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 23:59:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:09,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:09,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 23:59:09,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:09,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 23:59:09,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:09,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:59:09,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:59:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 23:59:09,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 92 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 23:59:09,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739843649] [2020-09-24 23:59:09,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:59:09,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 23:59:09,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752292040] [2020-09-24 23:59:09,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:59:09,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:59:09,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:59:09,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:59:09,721 INFO L87 Difference]: Start difference. First operand 1005 states and 1295 transitions. Second operand 10 states. [2020-09-24 23:59:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:59:13,881 INFO L93 Difference]: Finished difference Result 2557 states and 3683 transitions. [2020-09-24 23:59:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 23:59:13,883 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 243 [2020-09-24 23:59:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:59:13,900 INFO L225 Difference]: With dead ends: 2557 [2020-09-24 23:59:13,900 INFO L226 Difference]: Without dead ends: 1717 [2020-09-24 23:59:13,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-09-24 23:59:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2020-09-24 23:59:13,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1507. [2020-09-24 23:59:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-09-24 23:59:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1918 transitions. [2020-09-24 23:59:13,989 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1918 transitions. Word has length 243 [2020-09-24 23:59:13,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:59:13,989 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 1918 transitions. [2020-09-24 23:59:13,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:59:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1918 transitions. [2020-09-24 23:59:13,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-24 23:59:13,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:59:13,995 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-24 23:59:13,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:59:13,996 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:59:13,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:59:13,996 INFO L82 PathProgramCache]: Analyzing trace with hash 511855838, now seen corresponding path program 1 times [2020-09-24 23:59:13,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:59:13,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666429720] [2020-09-24 23:59:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:59:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:14,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:16,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:17,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:17,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:19,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:19,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-24 23:59:19,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 23:59:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 23:59:19,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:59:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:59:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-24 23:59:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:19,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:59:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:19,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:19,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:59:19,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:19,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:59:19,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:59:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:59:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:59:19,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:59:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 23:59:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:19,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:19,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:59:19,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 23:59:19,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:59:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:59:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 23:59:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:59:19,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 23:59:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:19,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:19,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:19,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 23:59:19,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-24 23:59:19,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:59:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:59:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 23:59:19,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:59:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 36 proven. 74 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 23:59:20,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666429720] [2020-09-24 23:59:20,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:59:20,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 23:59:20,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278708298] [2020-09-24 23:59:20,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:59:20,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:59:20,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:59:20,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:59:20,095 INFO L87 Difference]: Start difference. First operand 1507 states and 1918 transitions. Second operand 10 states. [2020-09-24 23:59:25,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:59:25,250 INFO L93 Difference]: Finished difference Result 3677 states and 5051 transitions. [2020-09-24 23:59:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 23:59:25,251 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2020-09-24 23:59:25,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:59:25,267 INFO L225 Difference]: With dead ends: 3677 [2020-09-24 23:59:25,267 INFO L226 Difference]: Without dead ends: 2344 [2020-09-24 23:59:25,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-09-24 23:59:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2020-09-24 23:59:25,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2059. [2020-09-24 23:59:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2020-09-24 23:59:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2720 transitions. [2020-09-24 23:59:25,355 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2720 transitions. Word has length 253 [2020-09-24 23:59:25,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:59:25,356 INFO L479 AbstractCegarLoop]: Abstraction has 2059 states and 2720 transitions. [2020-09-24 23:59:25,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:59:25,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2720 transitions. [2020-09-24 23:59:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-24 23:59:25,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:59:25,363 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 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] [2020-09-24 23:59:25,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:59:25,363 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:59:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:59:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash -648798357, now seen corresponding path program 1 times [2020-09-24 23:59:25,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:59:25,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997196571] [2020-09-24 23:59:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:59:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:25,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:27,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:27,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-24 23:59:27,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:59:27,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2436 [2020-09-24 23:59:27,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:59:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:59:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 239 [2020-09-24 23:59:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:59:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:27,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:27,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:59:27,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:27,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:59:27,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:59:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:59:27,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:59:27,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:27,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 23:59:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:27,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:28,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:28,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 23:59:28,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:59:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 23:59:28,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:28,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:59:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:59:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 23:59:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:59:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 23:59:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:28,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:28,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 23:59:28,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-24 23:59:28,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:59:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:59:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 23:59:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-09-24 23:59:28,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997196571] [2020-09-24 23:59:28,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:59:28,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 23:59:28,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951140067] [2020-09-24 23:59:28,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:59:28,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:59:28,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:59:28,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:59:28,643 INFO L87 Difference]: Start difference. First operand 2059 states and 2720 transitions. Second operand 7 states. [2020-09-24 23:59:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:59:31,028 INFO L93 Difference]: Finished difference Result 5132 states and 7313 transitions. [2020-09-24 23:59:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:59:31,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-09-24 23:59:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:59:31,048 INFO L225 Difference]: With dead ends: 5132 [2020-09-24 23:59:31,049 INFO L226 Difference]: Without dead ends: 3241 [2020-09-24 23:59:31,058 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 [2020-09-24 23:59:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3241 states. [2020-09-24 23:59:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3241 to 3155. [2020-09-24 23:59:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3155 states. [2020-09-24 23:59:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 4214 transitions. [2020-09-24 23:59:31,154 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 4214 transitions. Word has length 263 [2020-09-24 23:59:31,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:59:31,155 INFO L479 AbstractCegarLoop]: Abstraction has 3155 states and 4214 transitions. [2020-09-24 23:59:31,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:59:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 4214 transitions. [2020-09-24 23:59:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-09-24 23:59:31,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:59:31,165 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 23:59:31,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:59:31,166 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:59:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:59:31,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1726897106, now seen corresponding path program 1 times [2020-09-24 23:59:31,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:59:31,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066436898] [2020-09-24 23:59:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:59:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:31,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking...