/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:05:15,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:05:15,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:05:15,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:05:15,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:05:15,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:05:15,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:05:15,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:05:15,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:05:15,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:05:15,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:05:15,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:05:15,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:05:15,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:05:15,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:05:15,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:05:15,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:05:15,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:05:15,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:05:15,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:05:15,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:05:15,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:05:15,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:05:15,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:05:15,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:05:15,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:05:15,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:05:15,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:05:15,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:05:15,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:05:15,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:05:15,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:05:15,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:05:15,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:05:15,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:05:15,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:05:15,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:05:15,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:05:15,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:05:15,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:05:15,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:05:15,414 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 [2020-10-14 03:05:15,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:05:15,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:05:15,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:05:15,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:05:15,438 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:05:15,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:05:15,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:05:15,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:05:15,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:05:15,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:05:15,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:05:15,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:05:15,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:05:15,440 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:05:15,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:05:15,440 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:05:15,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:05:15,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:05:15,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:05:15,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:05:15,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:05:15,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:05:15,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:05:15,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:05:15,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:05:15,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:05:15,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:05:15,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:05:15,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:05:15,443 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:05:15,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:05:15,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:05:15,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:05:15,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:05:15,804 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:05:15,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label31.c [2020-10-14 03:05:15,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2947f9fc7/89803c2562be46e4949c1227f6ccff06/FLAG755f42344 [2020-10-14 03:05:16,646 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:05:16,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label31.c [2020-10-14 03:05:16,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2947f9fc7/89803c2562be46e4949c1227f6ccff06/FLAG755f42344 [2020-10-14 03:05:16,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2947f9fc7/89803c2562be46e4949c1227f6ccff06 [2020-10-14 03:05:16,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:05:16,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:05:16,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:05:16,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:05:16,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:05:16,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:05:16" (1/1) ... [2020-10-14 03:05:16,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5d0024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:16, skipping insertion in model container [2020-10-14 03:05:16,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:05:16" (1/1) ... [2020-10-14 03:05:16,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:05:16,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:05:18,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:05:18,735 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:05:19,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:05:19,759 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:05:19,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:19 WrapperNode [2020-10-14 03:05:19,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:05:19,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:05:19,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:05:19,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:05:19,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:19" (1/1) ... [2020-10-14 03:05:19,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:19" (1/1) ... [2020-10-14 03:05:19,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:19" (1/1) ... [2020-10-14 03:05:19,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:19" (1/1) ... [2020-10-14 03:05:19,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:19" (1/1) ... [2020-10-14 03:05:20,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:19" (1/1) ... [2020-10-14 03:05:20,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:19" (1/1) ... [2020-10-14 03:05:20,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:05:20,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:05:20,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:05:20,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:05:20,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:19" (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 [2020-10-14 03:05:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:05:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:05:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:05:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:05:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:05:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:05:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:05:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:05:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:05:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:05:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:05:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:05:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:05:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:05:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:05:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:05:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:05:32,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:05:32,422 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:05:32,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:05:32 BoogieIcfgContainer [2020-10-14 03:05:32,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:05:32,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:05:32,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:05:32,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:05:32,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:05:16" (1/3) ... [2020-10-14 03:05:32,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d568d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:05:32, skipping insertion in model container [2020-10-14 03:05:32,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:05:19" (2/3) ... [2020-10-14 03:05:32,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d568d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:05:32, skipping insertion in model container [2020-10-14 03:05:32,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:05:32" (3/3) ... [2020-10-14 03:05:32,447 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label31.c [2020-10-14 03:05:32,460 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:05:32,472 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:05:32,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:05:32,531 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:05:32,531 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:05:32,531 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:05:32,531 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:05:32,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:05:32,532 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:05:32,532 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:05:32,532 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:05:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:05:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 03:05:32,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:32,590 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] [2020-10-14 03:05:32,591 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:32,599 INFO L82 PathProgramCache]: Analyzing trace with hash -444424377, now seen corresponding path program 1 times [2020-10-14 03:05:32,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:32,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82477653] [2020-10-14 03:05:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:32,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:33,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:33,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 03:05:33,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:33,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-14 03:05:33,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:33,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:05:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:05:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 03:05:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:05:33,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:33,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:33,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:33,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:33,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:33,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 03:05:33,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:33,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:05:33,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:05:33,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82477653] [2020-10-14 03:05:33,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:05:33,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:05:33,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550924391] [2020-10-14 03:05:33,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:05:33,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:33,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:05:33,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:05:33,723 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:05:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:05:49,395 INFO L93 Difference]: Finished difference Result 3243 states and 5948 transitions. [2020-10-14 03:05:49,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:05:49,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 03:05:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:05:49,440 INFO L225 Difference]: With dead ends: 3243 [2020-10-14 03:05:49,441 INFO L226 Difference]: Without dead ends: 2045 [2020-10-14 03:05:49,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:05:49,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-14 03:05:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1988. [2020-10-14 03:05:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-14 03:05:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3533 transitions. [2020-10-14 03:05:49,656 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3533 transitions. Word has length 46 [2020-10-14 03:05:49,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:05:49,657 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 3533 transitions. [2020-10-14 03:05:49,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:05:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3533 transitions. [2020-10-14 03:05:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 03:05:49,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:49,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:05:49,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:05:49,664 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:49,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1609543249, now seen corresponding path program 1 times [2020-10-14 03:05:49,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:49,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536693698] [2020-10-14 03:05:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:49,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:51,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:51,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 03:05:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:05:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-10-14 03:05:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:51,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:05:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 03:05:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:05:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:51,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:51,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:51,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:51,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:05:51,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:51,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:05:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:05:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:51,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:05:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:51,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:51,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:05:51,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:05:51,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:51,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:51,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:51,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:51,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:05:51,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:05:51,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536693698] [2020-10-14 03:05:51,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:05:51,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:05:51,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753044231] [2020-10-14 03:05:51,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:05:51,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:51,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:05:51,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:05:51,602 INFO L87 Difference]: Start difference. First operand 1988 states and 3533 transitions. Second operand 6 states. [2020-10-14 03:06:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:16,604 INFO L93 Difference]: Finished difference Result 7291 states and 13348 transitions. [2020-10-14 03:06:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:06:16,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-14 03:06:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:16,651 INFO L225 Difference]: With dead ends: 7291 [2020-10-14 03:06:16,651 INFO L226 Difference]: Without dead ends: 5309 [2020-10-14 03:06:16,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:06:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5309 states. [2020-10-14 03:06:16,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5309 to 5285. [2020-10-14 03:06:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5285 states. [2020-10-14 03:06:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 9035 transitions. [2020-10-14 03:06:16,852 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 9035 transitions. Word has length 115 [2020-10-14 03:06:16,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:16,855 INFO L479 AbstractCegarLoop]: Abstraction has 5285 states and 9035 transitions. [2020-10-14 03:06:16,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:06:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 9035 transitions. [2020-10-14 03:06:16,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 03:06:16,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:16,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:06:16,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:06:16,871 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:16,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:16,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1397112867, now seen corresponding path program 1 times [2020-10-14 03:06:16,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:16,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726054473] [2020-10-14 03:06:16,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:18,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:18,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 03:06:18,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:06:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-14 03:06:18,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:18,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-14 03:06:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:06:18,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:19,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:19,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:19,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:19,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:06:19,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:19,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:06:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:06:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:19,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:19,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:19,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:19,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 03:06:19,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 03:06:19,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:19,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:06:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:06:19,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726054473] [2020-10-14 03:06:19,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:06:19,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:06:19,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343624051] [2020-10-14 03:06:19,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:06:19,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:19,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:06:19,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:06:19,466 INFO L87 Difference]: Start difference. First operand 5285 states and 9035 transitions. Second operand 5 states. [2020-10-14 03:06:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:42,809 INFO L93 Difference]: Finished difference Result 15498 states and 27061 transitions. [2020-10-14 03:06:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:06:42,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-14 03:06:42,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:42,863 INFO L225 Difference]: With dead ends: 15498 [2020-10-14 03:06:42,863 INFO L226 Difference]: Without dead ends: 10219 [2020-10-14 03:06:42,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:06:42,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10219 states. [2020-10-14 03:06:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10219 to 10206. [2020-10-14 03:06:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10206 states. [2020-10-14 03:06:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10206 states to 10206 states and 16943 transitions. [2020-10-14 03:06:43,188 INFO L78 Accepts]: Start accepts. Automaton has 10206 states and 16943 transitions. Word has length 181 [2020-10-14 03:06:43,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:43,193 INFO L479 AbstractCegarLoop]: Abstraction has 10206 states and 16943 transitions. [2020-10-14 03:06:43,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:06:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 10206 states and 16943 transitions. [2020-10-14 03:06:43,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 03:06:43,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:43,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:06:43,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:06:43,201 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:43,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:43,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1548665748, now seen corresponding path program 1 times [2020-10-14 03:06:43,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:43,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825467471] [2020-10-14 03:06:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:44,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 03:06:44,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:06:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-10-14 03:06:44,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:44,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:06:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 03:06:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:06:44,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:44,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:44,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:44,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:44,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:06:44,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:44,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:44,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:44,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:44,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:06:44,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:44,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:44,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:44,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:44,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 03:06:44,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:06:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 03:06:44,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:44,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 03:06:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 03:06:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:06:44,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825467471] [2020-10-14 03:06:44,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:06:44,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:06:44,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466507427] [2020-10-14 03:06:44,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:06:44,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:44,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:06:44,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:06:44,823 INFO L87 Difference]: Start difference. First operand 10206 states and 16943 transitions. Second operand 6 states. [2020-10-14 03:07:00,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:07:00,388 INFO L93 Difference]: Finished difference Result 20404 states and 34041 transitions. [2020-10-14 03:07:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:07:00,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2020-10-14 03:07:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:07:00,435 INFO L225 Difference]: With dead ends: 20404 [2020-10-14 03:07:00,435 INFO L226 Difference]: Without dead ends: 10204 [2020-10-14 03:07:00,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:07:00,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10204 states. [2020-10-14 03:07:00,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10204 to 10191. [2020-10-14 03:07:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10191 states. [2020-10-14 03:07:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10191 states to 10191 states and 16910 transitions. [2020-10-14 03:07:00,707 INFO L78 Accepts]: Start accepts. Automaton has 10191 states and 16910 transitions. Word has length 210 [2020-10-14 03:07:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:07:00,708 INFO L479 AbstractCegarLoop]: Abstraction has 10191 states and 16910 transitions. [2020-10-14 03:07:00,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:07:00,708 INFO L276 IsEmpty]: Start isEmpty. Operand 10191 states and 16910 transitions. [2020-10-14 03:07:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 03:07:00,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:07:00,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:07:00,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:07:00,715 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:07:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:07:00,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1605064171, now seen corresponding path program 1 times [2020-10-14 03:07:00,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:07:00,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496375637] [2020-10-14 03:07:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:07:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:00,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:04,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:04,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:04,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 03:07:04,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:07:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3913 [2020-10-14 03:07:04,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:04,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:07:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:07:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 03:07:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:04,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:07:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:04,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:04,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:07:04,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:07:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:07:04,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:04,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:07:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:07:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:07:04,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:04,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:07:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:04,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:04,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:07:04,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:07:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 03:07:04,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:04,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:07:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:07:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:07:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 03:07:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:05,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:05,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 03:07:05,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:07:05,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 03:07:05,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:05,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:07:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:07:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 03:07:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:07:05,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496375637] [2020-10-14 03:07:05,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:07:05,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:07:05,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99324524] [2020-10-14 03:07:05,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:07:05,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:07:05,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:07:05,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:07:05,298 INFO L87 Difference]: Start difference. First operand 10191 states and 16910 transitions. Second operand 7 states. [2020-10-14 03:07:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:07:35,063 INFO L93 Difference]: Finished difference Result 40195 states and 72057 transitions. [2020-10-14 03:07:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:07:35,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-14 03:07:35,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:07:35,214 INFO L225 Difference]: With dead ends: 40195 [2020-10-14 03:07:35,215 INFO L226 Difference]: Without dead ends: 30010 [2020-10-14 03:07:35,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:07:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30010 states. [2020-10-14 03:07:36,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30010 to 29856. [2020-10-14 03:07:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29856 states. [2020-10-14 03:07:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29856 states to 29856 states and 46235 transitions. [2020-10-14 03:07:36,135 INFO L78 Accepts]: Start accepts. Automaton has 29856 states and 46235 transitions. Word has length 220 [2020-10-14 03:07:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:07:36,135 INFO L479 AbstractCegarLoop]: Abstraction has 29856 states and 46235 transitions. [2020-10-14 03:07:36,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:07:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 29856 states and 46235 transitions. [2020-10-14 03:07:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 03:07:36,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:07:36,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:07:36,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:07:36,147 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:07:36,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:07:36,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1749938457, now seen corresponding path program 1 times [2020-10-14 03:07:36,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:07:36,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909201139] [2020-10-14 03:07:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:07:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:39,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:41,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:41,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 03:07:41,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:07:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 03:07:41,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:41,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:07:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:07:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 03:07:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:07:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:41,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:41,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:07:41,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:07:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:07:41,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:41,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:07:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:07:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:07:41,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:07:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:07:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:41,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:41,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 03:07:41,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:07:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:07:41,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:41,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:07:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:07:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:07:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:41,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 03:07:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:41,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:41,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:41,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 03:07:41,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:07:41,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 03:07:41,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:41,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:07:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:07:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:07:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:07:41,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909201139] [2020-10-14 03:07:41,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:07:41,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:07:41,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808791158] [2020-10-14 03:07:41,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:07:41,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:07:41,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:07:41,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:07:41,908 INFO L87 Difference]: Start difference. First operand 29856 states and 46235 transitions. Second operand 7 states. [2020-10-14 03:08:06,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:08:06,861 INFO L93 Difference]: Finished difference Result 75246 states and 126264 transitions. [2020-10-14 03:08:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:08:06,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-14 03:08:06,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:08:07,031 INFO L225 Difference]: With dead ends: 75246 [2020-10-14 03:08:07,031 INFO L226 Difference]: Without dead ends: 45400 [2020-10-14 03:08:07,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:08:07,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45400 states. [2020-10-14 03:08:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45400 to 45269. [2020-10-14 03:08:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45269 states. [2020-10-14 03:08:08,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45269 states to 45269 states and 72322 transitions. [2020-10-14 03:08:08,083 INFO L78 Accepts]: Start accepts. Automaton has 45269 states and 72322 transitions. Word has length 229 [2020-10-14 03:08:08,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:08:08,084 INFO L479 AbstractCegarLoop]: Abstraction has 45269 states and 72322 transitions. [2020-10-14 03:08:08,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:08:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand 45269 states and 72322 transitions. [2020-10-14 03:08:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-14 03:08:08,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:08:08,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:08:08,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:08:08,101 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:08:08,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:08:08,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1090781159, now seen corresponding path program 1 times [2020-10-14 03:08:08,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:08:08,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593964735] [2020-10-14 03:08:08,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:08:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:08,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:09,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:09,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:12,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:12,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 03:08:12,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:08:12,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4661 [2020-10-14 03:08:12,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:12,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:08:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-14 03:08:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 03:08:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:08:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:12,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:13,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:13,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:08:13,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:13,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:08:13,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:13,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:13,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:08:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:08:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:08:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:13,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:13,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:13,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 03:08:13,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:13,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 03:08:13,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:13,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:08:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:08:13,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:08:13,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 03:08:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:13,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:13,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:13,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 03:08:13,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:13,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 03:08:13,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:13,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:08:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:08:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 03:08:13,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:08:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:08:13,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593964735] [2020-10-14 03:08:13,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:08:13,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:08:13,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015568584] [2020-10-14 03:08:13,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:08:13,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:08:13,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:08:13,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:08:13,659 INFO L87 Difference]: Start difference. First operand 45269 states and 72322 transitions. Second operand 8 states. [2020-10-14 03:08:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:08:55,454 INFO L93 Difference]: Finished difference Result 172576 states and 316776 transitions. [2020-10-14 03:08:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:08:55,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-10-14 03:08:55,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:08:56,339 INFO L225 Difference]: With dead ends: 172576 [2020-10-14 03:08:56,340 INFO L226 Difference]: Without dead ends: 127317 [2020-10-14 03:08:56,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:08:56,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127317 states. [2020-10-14 03:09:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127317 to 123865. [2020-10-14 03:09:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123865 states. [2020-10-14 03:09:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123865 states to 123865 states and 202372 transitions. [2020-10-14 03:09:02,156 INFO L78 Accepts]: Start accepts. Automaton has 123865 states and 202372 transitions. Word has length 279 [2020-10-14 03:09:02,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:09:02,157 INFO L479 AbstractCegarLoop]: Abstraction has 123865 states and 202372 transitions. [2020-10-14 03:09:02,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:09:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 123865 states and 202372 transitions. [2020-10-14 03:09:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 03:09:02,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:02,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:09:02,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:09:02,186 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:02,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:02,187 INFO L82 PathProgramCache]: Analyzing trace with hash 598659364, now seen corresponding path program 1 times [2020-10-14 03:09:02,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:02,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252605172] [2020-10-14 03:09:02,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking...