/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/Problem02_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:47,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:47,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:48,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:48,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:48,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:48,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:48,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:48,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:48,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:48,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:48,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:48,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:48,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:48,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:48,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:48,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:48,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:48,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:48,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:48,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:48,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:48,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:48,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:48,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:48,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:48,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:48,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:48,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:48,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:48,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:48,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:48,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:48,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:48,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:48,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:48,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:48,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:48,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:48,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:48,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:48,120 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 10:10:48,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:48,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:48,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:48,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:48,167 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:48,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:48,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:48,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:48,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:48,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:48,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:48,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:48,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:48,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:48,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:48,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:48,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:48,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:48,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:48,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:48,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:48,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:48,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:48,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:48,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:48,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:48,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:48,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:48,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:48,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:10:48,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:48,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:48,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:48,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:48,706 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:48,708 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 10:10:48,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f9a598ce/b15687a2f64945ce8c6dafa49366e3ac/FLAGedabf7818 [2020-09-25 10:10:49,498 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:49,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 10:10:49,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f9a598ce/b15687a2f64945ce8c6dafa49366e3ac/FLAGedabf7818 [2020-09-25 10:10:49,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f9a598ce/b15687a2f64945ce8c6dafa49366e3ac [2020-09-25 10:10:49,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:49,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:49,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:49,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:49,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:49,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:49" (1/1) ... [2020-09-25 10:10:49,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49, skipping insertion in model container [2020-09-25 10:10:49,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:49" (1/1) ... [2020-09-25 10:10:49,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:49,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:50,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:50,321 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:50,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:50,637 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:50,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:50 WrapperNode [2020-09-25 10:10:50,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:50,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:50,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:50,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:50,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:50" (1/1) ... [2020-09-25 10:10:50,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:50" (1/1) ... [2020-09-25 10:10:50,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:50" (1/1) ... [2020-09-25 10:10:50,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:50" (1/1) ... [2020-09-25 10:10:50,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:50" (1/1) ... [2020-09-25 10:10:50,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:50" (1/1) ... [2020-09-25 10:10:50,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:50" (1/1) ... [2020-09-25 10:10:50,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:50,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:50,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:50,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:50,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:50" (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 10:10:50,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:50,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:50,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:50,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:50,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:50,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:50,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:52,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:52,343 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:52,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:52 BoogieIcfgContainer [2020-09-25 10:10:52,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:52,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:52,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:52,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:52,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:49" (1/3) ... [2020-09-25 10:10:52,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:52, skipping insertion in model container [2020-09-25 10:10:52,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:50" (2/3) ... [2020-09-25 10:10:52,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:52, skipping insertion in model container [2020-09-25 10:10:52,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:52" (3/3) ... [2020-09-25 10:10:52,362 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2020-09-25 10:10:52,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:52,385 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:52,408 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:52,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:52,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:52,444 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:52,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:52,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:52,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:52,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:52,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 10:10:52,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:52,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:52,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:52,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:52,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1064851622, now seen corresponding path program 1 times [2020-09-25 10:10:52,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:52,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-25 10:10:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:57,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 10:10:57,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:57,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:10:57,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:57,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 10:10:57,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:10:58,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:58,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:58,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:58,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 10:10:58,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:58,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:58,137 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 10:10:58,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-25 10:10:58,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:58,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:58,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21748542] [2020-09-25 10:10:58,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:58,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:58,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:58,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:58,172 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:11:00,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:00,436 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 10:11:00,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:00,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-09-25 10:11:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:00,474 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 10:11:00,474 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 10:11:00,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:11:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 10:11:00,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 10:11:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 10:11:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 10:11:00,610 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 129 [2020-09-25 10:11:00,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:00,611 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 10:11:00,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:00,612 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 10:11:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 10:11:00,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:00,629 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:00,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:00,630 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:00,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:00,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1321748602, now seen corresponding path program 1 times [2020-09-25 10:11:00,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:00,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696354924] [2020-09-25 10:11:00,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:04,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:05,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 10:11:05,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:11:05,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:11:05,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:05,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:11:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 10:11:05,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:05,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:05,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:05,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:11:05,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:05,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:11:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:06,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:06,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:11:06,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:06,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:11:06,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:06,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:06,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:06,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:06,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:11:06,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:06,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696354924] [2020-09-25 10:11:06,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:06,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:11:06,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606701831] [2020-09-25 10:11:06,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:11:06,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:06,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:11:06,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:06,093 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 10:11:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:08,271 INFO L93 Difference]: Finished difference Result 1785 states and 2268 transitions. [2020-09-25 10:11:08,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:11:08,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-09-25 10:11:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:08,290 INFO L225 Difference]: With dead ends: 1785 [2020-09-25 10:11:08,290 INFO L226 Difference]: Without dead ends: 1074 [2020-09-25 10:11:08,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-09-25 10:11:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1042. [2020-09-25 10:11:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-09-25 10:11:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1291 transitions. [2020-09-25 10:11:08,344 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1291 transitions. Word has length 147 [2020-09-25 10:11:08,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:08,344 INFO L479 AbstractCegarLoop]: Abstraction has 1042 states and 1291 transitions. [2020-09-25 10:11:08,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:11:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1291 transitions. [2020-09-25 10:11:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 10:11:08,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:08,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:08,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:08,351 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:08,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:08,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1793356799, now seen corresponding path program 1 times [2020-09-25 10:11:08,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:08,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308307075] [2020-09-25 10:11:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 10:11:13,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:13,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:11:13,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:11:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:11:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:13,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:13,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:11:13,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:11:13,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:11:13,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 10:11:13,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:11:13,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:14,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308307075] [2020-09-25 10:11:14,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:14,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:11:14,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651128431] [2020-09-25 10:11:14,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:11:14,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:14,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:11:14,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:11:14,141 INFO L87 Difference]: Start difference. First operand 1042 states and 1291 transitions. Second operand 11 states. [2020-09-25 10:11:17,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:17,772 INFO L93 Difference]: Finished difference Result 3237 states and 4296 transitions. [2020-09-25 10:11:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:17,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 163 [2020-09-25 10:11:17,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:17,786 INFO L225 Difference]: With dead ends: 3237 [2020-09-25 10:11:17,786 INFO L226 Difference]: Without dead ends: 981 [2020-09-25 10:11:17,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:11:17,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-09-25 10:11:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 969. [2020-09-25 10:11:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-09-25 10:11:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1185 transitions. [2020-09-25 10:11:17,835 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1185 transitions. Word has length 163 [2020-09-25 10:11:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:17,835 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1185 transitions. [2020-09-25 10:11:17,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:11:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1185 transitions. [2020-09-25 10:11:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 10:11:17,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:17,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:17,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:17,841 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:17,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:17,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1758187067, now seen corresponding path program 1 times [2020-09-25 10:11:17,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:17,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132780610] [2020-09-25 10:11:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:20,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 10:11:22,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:22,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 10:11:22,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:11:22,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:11:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:11:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:11:23,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:23,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:23,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:23,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:23,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 10:11:23,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:23,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:11:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:23,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:23,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:23,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:11:23,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 10:11:23,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:23,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:11:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:23,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132780610] [2020-09-25 10:11:23,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:23,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:11:23,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767644500] [2020-09-25 10:11:23,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:11:23,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:23,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:11:23,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:23,532 INFO L87 Difference]: Start difference. First operand 969 states and 1185 transitions. Second operand 12 states. [2020-09-25 10:11:24,572 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-09-25 10:11:28,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:28,534 INFO L93 Difference]: Finished difference Result 3829 states and 5084 transitions. [2020-09-25 10:11:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 10:11:28,535 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 167 [2020-09-25 10:11:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:28,551 INFO L225 Difference]: With dead ends: 3829 [2020-09-25 10:11:28,551 INFO L226 Difference]: Without dead ends: 2778 [2020-09-25 10:11:28,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:11:28,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2020-09-25 10:11:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2694. [2020-09-25 10:11:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2694 states. [2020-09-25 10:11:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3303 transitions. [2020-09-25 10:11:28,667 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3303 transitions. Word has length 167 [2020-09-25 10:11:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:28,667 INFO L479 AbstractCegarLoop]: Abstraction has 2694 states and 3303 transitions. [2020-09-25 10:11:28,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:11:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3303 transitions. [2020-09-25 10:11:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 10:11:28,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:28,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:28,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:28,679 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:28,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash -249930393, now seen corresponding path program 1 times [2020-09-25 10:11:28,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:28,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990842553] [2020-09-25 10:11:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:28,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:29,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:33,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 10:11:33,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:11:33,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:33,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 10:11:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:11:33,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:33,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:33,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:33,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:33,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:11:33,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:33,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:33,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:33,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:33,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:33,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:11:33,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:33,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:11:33,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:33,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:11:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:34,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:34,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:11:34,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 10:11:34,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:34,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:11:34,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:11:34,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990842553] [2020-09-25 10:11:34,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:34,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:11:34,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628271249] [2020-09-25 10:11:34,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:11:34,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:34,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:11:34,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:11:34,257 INFO L87 Difference]: Start difference. First operand 2694 states and 3303 transitions. Second operand 9 states. [2020-09-25 10:11:37,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:37,445 INFO L93 Difference]: Finished difference Result 7905 states and 10142 transitions. [2020-09-25 10:11:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:11:37,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 185 [2020-09-25 10:11:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:37,476 INFO L225 Difference]: With dead ends: 7905 [2020-09-25 10:11:37,476 INFO L226 Difference]: Without dead ends: 5480 [2020-09-25 10:11:37,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:37,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2020-09-25 10:11:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 4614. [2020-09-25 10:11:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4614 states. [2020-09-25 10:11:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 5612 transitions. [2020-09-25 10:11:37,631 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 5612 transitions. Word has length 185 [2020-09-25 10:11:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:37,632 INFO L479 AbstractCegarLoop]: Abstraction has 4614 states and 5612 transitions. [2020-09-25 10:11:37,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:11:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 5612 transitions. [2020-09-25 10:11:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 10:11:37,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:37,648 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:37,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:11:37,649 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:37,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:37,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1831307549, now seen corresponding path program 1 times [2020-09-25 10:11:37,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:37,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997114164] [2020-09-25 10:11:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:38,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:38,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:39,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking...