/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem18_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:54:24,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:54:24,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:54:24,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:54:24,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:54:24,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:54:24,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:54:24,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:54:24,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:54:24,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:54:24,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:54:24,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:54:24,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:54:24,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:54:24,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:54:24,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:54:24,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:54:24,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:54:24,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:54:24,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:54:24,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:54:24,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:54:24,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:54:24,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:54:24,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:54:24,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:54:24,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:54:24,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:54:24,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:54:24,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:54:24,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:54:24,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:54:24,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:54:24,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:54:24,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:54:24,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:54:24,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:54:24,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:54:24,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:54:24,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:54:24,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:54:24,398 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 22:54:24,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:54:24,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:54:24,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:54:24,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:54:24,427 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:54:24,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:54:24,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:54:24,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:54:24,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:54:24,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:54:24,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:54:24,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:54:24,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:54:24,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:54:24,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:54:24,430 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:54:24,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:54:24,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:54:24,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:54:24,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:54:24,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:54:24,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:54:24,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:54:24,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:54:24,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:54:24,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:54:24,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:54:24,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:54:24,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:54:24,433 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:54:24,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:54:24,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:54:24,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:54:24,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:54:24,774 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:54:24,774 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56.c [2020-10-14 22:54:24,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/109ff0d56/cb63232b24a24af4812806c6918d4b7e/FLAG8ed5a1c38 [2020-10-14 22:54:25,541 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:54:25,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label56.c [2020-10-14 22:54:25,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/109ff0d56/cb63232b24a24af4812806c6918d4b7e/FLAG8ed5a1c38 [2020-10-14 22:54:25,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/109ff0d56/cb63232b24a24af4812806c6918d4b7e [2020-10-14 22:54:25,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:54:25,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:54:25,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:54:25,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:54:25,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:54:25,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:54:25" (1/1) ... [2020-10-14 22:54:25,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9c66bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:25, skipping insertion in model container [2020-10-14 22:54:25,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:54:25" (1/1) ... [2020-10-14 22:54:25,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:54:25,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:54:27,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:54:27,190 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:54:27,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:54:27,668 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:54:27,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:27 WrapperNode [2020-10-14 22:54:27,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:54:27,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:54:27,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:54:27,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:54:27,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:27" (1/1) ... [2020-10-14 22:54:27,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:27" (1/1) ... [2020-10-14 22:54:27,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:27" (1/1) ... [2020-10-14 22:54:27,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:27" (1/1) ... [2020-10-14 22:54:27,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:27" (1/1) ... [2020-10-14 22:54:27,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:27" (1/1) ... [2020-10-14 22:54:27,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:27" (1/1) ... [2020-10-14 22:54:27,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:54:27,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:54:27,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:54:27,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:54:27,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:27" (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 22:54:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:54:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:54:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:54:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:54:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 22:54:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:54:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:54:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:54:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 22:54:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:54:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:54:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:54:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:54:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:54:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:54:34,415 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:54:34,415 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:54:34,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:54:34 BoogieIcfgContainer [2020-10-14 22:54:34,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:54:34,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:54:34,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:54:34,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:54:34,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:54:25" (1/3) ... [2020-10-14 22:54:34,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c78a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:54:34, skipping insertion in model container [2020-10-14 22:54:34,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:54:27" (2/3) ... [2020-10-14 22:54:34,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c78a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:54:34, skipping insertion in model container [2020-10-14 22:54:34,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:54:34" (3/3) ... [2020-10-14 22:54:34,452 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label56.c [2020-10-14 22:54:34,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:54:34,476 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:54:34,492 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:54:34,525 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:54:34,525 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:54:34,525 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:54:34,525 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:54:34,526 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:54:34,526 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:54:34,526 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:54:34,526 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:54:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 22:54:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 22:54:34,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:54:34,581 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] [2020-10-14 22:54:34,582 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:54:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:54:34,588 INFO L82 PathProgramCache]: Analyzing trace with hash -447969511, now seen corresponding path program 1 times [2020-10-14 22:54:34,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:54:34,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383085965] [2020-10-14 22:54:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:54:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:54:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:54:35,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:54:35,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 22:54:35,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:54:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-14 22:54:35,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:54:35,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:54:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:54:35,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:54:35,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 22:54:35,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:54:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:54:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:54:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:54:35,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:54:35,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:54:35,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:54:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:54:35,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:54:35,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:54:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:54:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:54:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:54:35,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:54:35,411 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 22:54:35,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383085965] [2020-10-14 22:54:35,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:54:35,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:54:35,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537802350] [2020-10-14 22:54:35,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:54:35,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:54:35,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:54:35,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:54:35,440 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-14 22:54:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:54:47,549 INFO L93 Difference]: Finished difference Result 2984 states and 5769 transitions. [2020-10-14 22:54:47,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:54:47,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-14 22:54:47,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:54:47,595 INFO L225 Difference]: With dead ends: 2984 [2020-10-14 22:54:47,595 INFO L226 Difference]: Without dead ends: 2142 [2020-10-14 22:54:47,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:54:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-14 22:54:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-14 22:54:47,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-14 22:54:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3571 transitions. [2020-10-14 22:54:47,767 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3571 transitions. Word has length 54 [2020-10-14 22:54:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:54:47,768 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 3571 transitions. [2020-10-14 22:54:47,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:54:47,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3571 transitions. [2020-10-14 22:54:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 22:54:47,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:54:47,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:54:47,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:54:47,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:54:47,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:54:47,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1924142128, now seen corresponding path program 1 times [2020-10-14 22:54:47,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:54:47,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965348428] [2020-10-14 22:54:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:54:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:54:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:54:48,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:54:48,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:54:49,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:54:49,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 22:54:49,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:54:49,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-14 22:54:49,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:54:49,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:54:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:54:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:54:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 22:54:49,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:54:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:54:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:54:49,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:54:49,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:54:49,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:54:49,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:54:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:54:49,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:54:49,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:54:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:54:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:54:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:54:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:54:49,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:54:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:54:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:54:49,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:54:49,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 22:54:49,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:54:49,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 22:54:49,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:54:49,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:54:49,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:54:49,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:54:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 22:54:49,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:54:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:54:49,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965348428] [2020-10-14 22:54:49,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:54:49,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:54:49,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079535569] [2020-10-14 22:54:49,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:54:49,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:54:49,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:54:49,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:54:49,892 INFO L87 Difference]: Start difference. First operand 2135 states and 3571 transitions. Second operand 7 states. [2020-10-14 22:54:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:54:59,828 INFO L93 Difference]: Finished difference Result 6509 states and 10970 transitions. [2020-10-14 22:54:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:54:59,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-14 22:54:59,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:54:59,853 INFO L225 Difference]: With dead ends: 6509 [2020-10-14 22:54:59,854 INFO L226 Difference]: Without dead ends: 4380 [2020-10-14 22:54:59,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:54:59,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2020-10-14 22:54:59,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 3597. [2020-10-14 22:54:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3597 states. [2020-10-14 22:54:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5299 transitions. [2020-10-14 22:54:59,988 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5299 transitions. Word has length 142 [2020-10-14 22:54:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:54:59,989 INFO L479 AbstractCegarLoop]: Abstraction has 3597 states and 5299 transitions. [2020-10-14 22:54:59,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:54:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5299 transitions. [2020-10-14 22:54:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 22:54:59,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:54:59,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:54:59,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:54:59,995 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:54:59,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:54:59,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1829986872, now seen corresponding path program 1 times [2020-10-14 22:54:59,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:54:59,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924434576] [2020-10-14 22:54:59,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:55:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:03,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:03,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 22:55:03,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:55:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3882 [2020-10-14 22:55:03,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:03,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:55:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 22:55:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 22:55:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:03,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:55:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:03,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:04,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:04,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:55:04,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:04,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:55:04,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:04,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:55:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:55:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:55:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:04,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:55:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:04,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:04,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:04,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:55:04,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:55:04,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:04,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:55:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:55:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 22:55:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:04,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 22:55:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:04,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:04,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:04,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 22:55:04,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:04,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 22:55:04,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:04,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:55:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:55:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 22:55:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:55:04,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924434576] [2020-10-14 22:55:04,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:55:04,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:55:04,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370252680] [2020-10-14 22:55:04,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:55:04,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:55:04,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:55:04,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:55:04,350 INFO L87 Difference]: Start difference. First operand 3597 states and 5299 transitions. Second operand 7 states. [2020-10-14 22:55:13,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:55:13,342 INFO L93 Difference]: Finished difference Result 9362 states and 14371 transitions. [2020-10-14 22:55:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:55:13,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-14 22:55:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:55:13,383 INFO L225 Difference]: With dead ends: 9362 [2020-10-14 22:55:13,384 INFO L226 Difference]: Without dead ends: 5771 [2020-10-14 22:55:13,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:55:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2020-10-14 22:55:13,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5760. [2020-10-14 22:55:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5760 states. [2020-10-14 22:55:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 8589 transitions. [2020-10-14 22:55:13,591 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 8589 transitions. Word has length 213 [2020-10-14 22:55:13,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:55:13,593 INFO L479 AbstractCegarLoop]: Abstraction has 5760 states and 8589 transitions. [2020-10-14 22:55:13,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:55:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 8589 transitions. [2020-10-14 22:55:13,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 22:55:13,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:55:13,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:55:13,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:55:13,603 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:55:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:55:13,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1235127193, now seen corresponding path program 1 times [2020-10-14 22:55:13,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:55:13,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423946779] [2020-10-14 22:55:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:55:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:13,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:14,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:18,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:18,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 22:55:18,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:55:18,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 22:55:18,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:18,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:18,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:55:18,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 22:55:18,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 22:55:18,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:55:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:18,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:18,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:18,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:55:18,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:18,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:55:18,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:18,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:55:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:55:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:55:18,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:55:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:18,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:55:18,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:55:18,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:18,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:55:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:55:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 22:55:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 22:55:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:18,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:19,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:19,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 22:55:19,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:19,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 22:55:19,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:19,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:19,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:55:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:55:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 22:55:19,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 113 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:55:19,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423946779] [2020-10-14 22:55:19,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:55:19,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:55:19,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123619178] [2020-10-14 22:55:19,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:55:19,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:55:19,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:55:19,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:55:19,348 INFO L87 Difference]: Start difference. First operand 5760 states and 8589 transitions. Second operand 6 states. [2020-10-14 22:55:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:55:30,293 INFO L93 Difference]: Finished difference Result 16672 states and 25593 transitions. [2020-10-14 22:55:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:55:30,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 260 [2020-10-14 22:55:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:55:30,350 INFO L225 Difference]: With dead ends: 16672 [2020-10-14 22:55:30,351 INFO L226 Difference]: Without dead ends: 10918 [2020-10-14 22:55:30,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:55:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10918 states. [2020-10-14 22:55:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10918 to 10168. [2020-10-14 22:55:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10168 states. [2020-10-14 22:55:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10168 states to 10168 states and 14165 transitions. [2020-10-14 22:55:30,634 INFO L78 Accepts]: Start accepts. Automaton has 10168 states and 14165 transitions. Word has length 260 [2020-10-14 22:55:30,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:55:30,635 INFO L479 AbstractCegarLoop]: Abstraction has 10168 states and 14165 transitions. [2020-10-14 22:55:30,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:55:30,636 INFO L276 IsEmpty]: Start isEmpty. Operand 10168 states and 14165 transitions. [2020-10-14 22:55:30,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 22:55:30,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:55:30,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:55:30,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:55:30,642 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:55:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:55:30,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2101907189, now seen corresponding path program 1 times [2020-10-14 22:55:30,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:55:30,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287932781] [2020-10-14 22:55:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:55:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:30,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:33,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:33,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:55:33,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:55:33,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2811 [2020-10-14 22:55:33,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:33,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:55:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 22:55:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 22:55:33,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 22:55:33,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:55:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:33,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:33,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:33,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:55:33,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:33,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:55:33,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:33,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:55:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:55:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:55:33,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:33,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:55:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:33,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:33,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:33,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:55:33,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:33,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 22:55:33,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:33,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:55:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:55:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 22:55:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 22:55:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:34,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:34,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 22:55:34,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:34,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 22:55:34,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:34,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:55:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:55:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 22:55:34,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:55:34,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287932781] [2020-10-14 22:55:34,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:55:34,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:55:34,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470065928] [2020-10-14 22:55:34,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:55:34,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:55:34,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:55:34,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:55:34,858 INFO L87 Difference]: Start difference. First operand 10168 states and 14165 transitions. Second operand 8 states. [2020-10-14 22:55:55,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:55:55,368 INFO L93 Difference]: Finished difference Result 24993 states and 35093 transitions. [2020-10-14 22:55:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:55:55,370 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2020-10-14 22:55:55,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:55:55,434 INFO L225 Difference]: With dead ends: 24993 [2020-10-14 22:55:55,434 INFO L226 Difference]: Without dead ends: 14107 [2020-10-14 22:55:55,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-14 22:55:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14107 states. [2020-10-14 22:55:55,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14107 to 13875. [2020-10-14 22:55:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13875 states. [2020-10-14 22:55:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13875 states to 13875 states and 18529 transitions. [2020-10-14 22:55:55,774 INFO L78 Accepts]: Start accepts. Automaton has 13875 states and 18529 transitions. Word has length 262 [2020-10-14 22:55:55,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:55:55,775 INFO L479 AbstractCegarLoop]: Abstraction has 13875 states and 18529 transitions. [2020-10-14 22:55:55,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:55:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand 13875 states and 18529 transitions. [2020-10-14 22:55:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 22:55:55,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:55:55,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:55:55,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:55:55,782 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:55:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:55:55,782 INFO L82 PathProgramCache]: Analyzing trace with hash -708229130, now seen corresponding path program 1 times [2020-10-14 22:55:55,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:55:55,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369188336] [2020-10-14 22:55:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:55:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:55,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:58,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:58,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:55:58,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:55:58,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2513 [2020-10-14 22:55:58,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:58,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:55:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 22:55:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 22:55:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:55:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:58,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:58,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:55:58,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:55:58,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:58,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:55:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:55:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:55:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:55:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:58,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:58,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:55:58,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:55:58,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:58,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:55:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:55:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 22:55:58,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:55:58,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 22:55:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:55:58,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:55:58,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:55:58,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 22:55:58,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:55:58,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 22:55:58,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:55:58,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:55:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:55:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:55:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 22:55:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:55:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:55:59,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369188336] [2020-10-14 22:55:59,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:55:59,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:55:59,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935376377] [2020-10-14 22:55:59,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:55:59,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:55:59,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:55:59,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:55:59,374 INFO L87 Difference]: Start difference. First operand 13875 states and 18529 transitions. Second operand 7 states. [2020-10-14 22:56:11,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:56:11,424 INFO L93 Difference]: Finished difference Result 30961 states and 42593 transitions. [2020-10-14 22:56:11,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:56:11,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 22:56:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:56:11,496 INFO L225 Difference]: With dead ends: 30961 [2020-10-14 22:56:11,496 INFO L226 Difference]: Without dead ends: 16327 [2020-10-14 22:56:11,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:56:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16327 states. [2020-10-14 22:56:11,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16327 to 16027. [2020-10-14 22:56:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16027 states. [2020-10-14 22:56:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16027 states to 16027 states and 20779 transitions. [2020-10-14 22:56:11,943 INFO L78 Accepts]: Start accepts. Automaton has 16027 states and 20779 transitions. Word has length 263 [2020-10-14 22:56:11,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:56:11,944 INFO L479 AbstractCegarLoop]: Abstraction has 16027 states and 20779 transitions. [2020-10-14 22:56:11,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:56:11,944 INFO L276 IsEmpty]: Start isEmpty. Operand 16027 states and 20779 transitions. [2020-10-14 22:56:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 22:56:11,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:56:11,958 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:56:11,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:56:11,959 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:56:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:56:11,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1118969821, now seen corresponding path program 1 times [2020-10-14 22:56:11,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:56:11,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540618007] [2020-10-14 22:56:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:56:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:13,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:16,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:16,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 22:56:16,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:56:16,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4027 [2020-10-14 22:56:16,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:16,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:56:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 22:56:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 22:56:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:56:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:56:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:16,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:16,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:56:16,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:56:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:56:16,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:16,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:56:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:56:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:56:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:56:16,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:56:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:16,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:16,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:16,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 22:56:16,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:56:16,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:56:16,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:16,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:16,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:56:16,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:56:16,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 22:56:16,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:56:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 22:56:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:16,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:16,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:16,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:16,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 22:56:16,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:56:16,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 22:56:16,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:16,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:56:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:56:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:56:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:56:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 22:56:16,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540618007] [2020-10-14 22:56:16,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:56:16,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:56:16,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339304042] [2020-10-14 22:56:16,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:56:16,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:56:16,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:56:16,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:56:16,669 INFO L87 Difference]: Start difference. First operand 16027 states and 20779 transitions. Second operand 6 states. [2020-10-14 22:56:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:56:31,728 INFO L93 Difference]: Finished difference Result 42819 states and 59924 transitions. [2020-10-14 22:56:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:56:31,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 278 [2020-10-14 22:56:31,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:56:31,819 INFO L225 Difference]: With dead ends: 42819 [2020-10-14 22:56:31,819 INFO L226 Difference]: Without dead ends: 26798 [2020-10-14 22:56:31,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 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 22:56:31,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26798 states. [2020-10-14 22:56:32,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26798 to 26078. [2020-10-14 22:56:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26078 states. [2020-10-14 22:56:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26078 states to 26078 states and 34650 transitions. [2020-10-14 22:56:32,372 INFO L78 Accepts]: Start accepts. Automaton has 26078 states and 34650 transitions. Word has length 278 [2020-10-14 22:56:32,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:56:32,372 INFO L479 AbstractCegarLoop]: Abstraction has 26078 states and 34650 transitions. [2020-10-14 22:56:32,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:56:32,373 INFO L276 IsEmpty]: Start isEmpty. Operand 26078 states and 34650 transitions. [2020-10-14 22:56:32,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-14 22:56:32,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:56:32,380 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:56:32,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:56:32,380 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:56:32,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:56:32,381 INFO L82 PathProgramCache]: Analyzing trace with hash -58267718, now seen corresponding path program 1 times [2020-10-14 22:56:32,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:56:32,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737923727] [2020-10-14 22:56:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:56:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:33,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:35,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:35,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-14 22:56:35,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:56:35,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2606 [2020-10-14 22:56:35,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:35,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:56:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 22:56:35,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 22:56:35,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:56:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:56:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:35,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:35,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:35,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:56:35,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:56:35,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:56:35,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:35,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:35,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:56:35,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:56:35,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:56:35,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:56:35,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:56:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:35,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:35,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:56:35,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:56:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:56:35,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:35,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:56:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:56:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 22:56:35,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:56:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 22:56:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:35,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:35,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:35,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 22:56:35,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:56:35,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 22:56:35,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:35,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:56:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:56:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 22:56:35,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:56:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:56:35,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737923727] [2020-10-14 22:56:35,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:56:35,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:56:35,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309792526] [2020-10-14 22:56:35,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:56:35,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:56:35,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:56:35,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:56:35,513 INFO L87 Difference]: Start difference. First operand 26078 states and 34650 transitions. Second operand 7 states. [2020-10-14 22:56:47,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:56:47,931 INFO L93 Difference]: Finished difference Result 61004 states and 83505 transitions. [2020-10-14 22:56:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:56:47,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-14 22:56:47,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:56:48,026 INFO L225 Difference]: With dead ends: 61004 [2020-10-14 22:56:48,027 INFO L226 Difference]: Without dead ends: 31822 [2020-10-14 22:56:48,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:56:48,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31822 states. [2020-10-14 22:56:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31822 to 30276. [2020-10-14 22:56:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30276 states. [2020-10-14 22:56:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30276 states to 30276 states and 35627 transitions. [2020-10-14 22:56:48,643 INFO L78 Accepts]: Start accepts. Automaton has 30276 states and 35627 transitions. Word has length 313 [2020-10-14 22:56:48,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:56:48,644 INFO L479 AbstractCegarLoop]: Abstraction has 30276 states and 35627 transitions. [2020-10-14 22:56:48,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:56:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 30276 states and 35627 transitions. [2020-10-14 22:56:48,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-14 22:56:48,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:56:48,657 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 22:56:48,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:56:48,658 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:56:48,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:56:48,658 INFO L82 PathProgramCache]: Analyzing trace with hash 2030665814, now seen corresponding path program 1 times [2020-10-14 22:56:48,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:56:48,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275813356] [2020-10-14 22:56:48,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:56:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:53,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:53,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 22:56:53,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:56:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 22:56:53,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:53,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:56:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 22:56:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 22:56:53,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:56:53,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:56:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:53,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:53,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:56:53,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:56:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:56:53,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:53,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:56:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:56:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:56:53,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:56:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:56:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:53,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:53,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:53,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:56:53,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:56:53,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:56:53,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:53,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:56:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:56:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 22:56:53,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:56:53,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 22:56:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:54,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:54,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:56:54,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:56:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 22:56:54,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:54,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:56:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:56:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:56:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:56:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 22:56:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:56:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:56:54,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:56:54,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 22:56:54,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:56:54,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:56:54,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:56:54,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:56:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:56:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 22:56:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:56:54,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:56:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 248 proven. 87 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 22:56:54,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275813356] [2020-10-14 22:56:54,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:56:54,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:56:54,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838224336] [2020-10-14 22:56:54,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:56:54,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:56:54,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:56:54,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:56:54,308 INFO L87 Difference]: Start difference. First operand 30276 states and 35627 transitions. Second operand 7 states. [2020-10-14 22:57:09,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:57:09,122 INFO L93 Difference]: Finished difference Result 71774 states and 88739 transitions. [2020-10-14 22:57:09,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:57:09,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-14 22:57:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:57:09,246 INFO L225 Difference]: With dead ends: 71774 [2020-10-14 22:57:09,246 INFO L226 Difference]: Without dead ends: 41504 [2020-10-14 22:57:09,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:57:09,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41504 states. [2020-10-14 22:57:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41504 to 40613. [2020-10-14 22:57:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40613 states. [2020-10-14 22:57:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40613 states to 40613 states and 49368 transitions. [2020-10-14 22:57:10,046 INFO L78 Accepts]: Start accepts. Automaton has 40613 states and 49368 transitions. Word has length 370 [2020-10-14 22:57:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:57:10,046 INFO L479 AbstractCegarLoop]: Abstraction has 40613 states and 49368 transitions. [2020-10-14 22:57:10,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:57:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 40613 states and 49368 transitions. [2020-10-14 22:57:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-14 22:57:10,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:57:10,056 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:10,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:57:10,057 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:57:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:57:10,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1272392074, now seen corresponding path program 1 times [2020-10-14 22:57:10,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:57:10,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418162966] [2020-10-14 22:57:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:57:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:15,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:15,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-14 22:57:15,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:57:15,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 22:57:15,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:15,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:15,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:57:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:57:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-14 22:57:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:15,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:57:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:15,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:15,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:57:15,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:57:15,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:15,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:57:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:57:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:57:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:15,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:57:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:15,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:15,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:15,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 22:57:15,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 22:57:15,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:15,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:57:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:57:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-14 22:57:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:15,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 22:57:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:15,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:15,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:15,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:57:15,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:15,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:57:15,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:15,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:57:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 22:57:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:57:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-14 22:57:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:15,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:15,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:15,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 22:57:15,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:57:15,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:15,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:57:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 22:57:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:57:15,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 141 proven. 184 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 22:57:15,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418162966] [2020-10-14 22:57:15,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:57:15,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:57:15,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991310779] [2020-10-14 22:57:15,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:57:15,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:57:15,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:57:15,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:57:15,855 INFO L87 Difference]: Start difference. First operand 40613 states and 49368 transitions. Second operand 7 states. [2020-10-14 22:57:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:57:25,961 INFO L93 Difference]: Finished difference Result 76829 states and 92357 transitions. [2020-10-14 22:57:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:57:25,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 482 [2020-10-14 22:57:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:57:26,053 INFO L225 Difference]: With dead ends: 76829 [2020-10-14 22:57:26,054 INFO L226 Difference]: Without dead ends: 36226 [2020-10-14 22:57:26,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:57:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36226 states. [2020-10-14 22:57:26,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36226 to 36079. [2020-10-14 22:57:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36079 states. [2020-10-14 22:57:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36079 states to 36079 states and 41917 transitions. [2020-10-14 22:57:26,652 INFO L78 Accepts]: Start accepts. Automaton has 36079 states and 41917 transitions. Word has length 482 [2020-10-14 22:57:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:57:26,652 INFO L479 AbstractCegarLoop]: Abstraction has 36079 states and 41917 transitions. [2020-10-14 22:57:26,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:57:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 36079 states and 41917 transitions. [2020-10-14 22:57:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2020-10-14 22:57:26,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:57:26,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:26,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:57:26,663 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:57:26,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:57:26,663 INFO L82 PathProgramCache]: Analyzing trace with hash -350401580, now seen corresponding path program 1 times [2020-10-14 22:57:26,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:57:26,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125214019] [2020-10-14 22:57:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:57:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:26,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:28,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:30,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:30,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-14 22:57:30,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:57:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3636 [2020-10-14 22:57:30,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:30,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:57:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 22:57:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 444 [2020-10-14 22:57:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:30,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:57:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:30,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:30,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:57:30,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:30,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:57:30,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:30,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:30,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:57:30,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:57:30,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:57:30,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:57:30,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:57:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:30,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:30,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:30,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:57:30,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:57:30,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:30,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:30,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:57:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:57:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 22:57:30,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:57:30,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 22:57:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:31,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-14 22:57:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:57:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-10-14 22:57:31,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:31,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:57:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:57:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 381 [2020-10-14 22:57:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:57:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:57:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:31,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:31,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 22:57:31,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 22:57:31,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:31,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:31,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:57:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:57:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:57:32,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 22:57:32,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125214019] [2020-10-14 22:57:32,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:57:32,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:57:32,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134026888] [2020-10-14 22:57:32,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:57:32,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:57:32,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:57:32,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:57:32,191 INFO L87 Difference]: Start difference. First operand 36079 states and 41917 transitions. Second operand 5 states. [2020-10-14 22:57:42,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:57:42,400 INFO L93 Difference]: Finished difference Result 72872 states and 84953 transitions. [2020-10-14 22:57:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:57:42,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 563 [2020-10-14 22:57:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:57:42,459 INFO L225 Difference]: With dead ends: 72872 [2020-10-14 22:57:42,459 INFO L226 Difference]: Without dead ends: 36799 [2020-10-14 22:57:42,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 22:57:42,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36799 states. [2020-10-14 22:57:43,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36799 to 36773. [2020-10-14 22:57:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36773 states. [2020-10-14 22:57:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36773 states to 36773 states and 42082 transitions. [2020-10-14 22:57:43,239 INFO L78 Accepts]: Start accepts. Automaton has 36773 states and 42082 transitions. Word has length 563 [2020-10-14 22:57:43,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:57:43,240 INFO L479 AbstractCegarLoop]: Abstraction has 36773 states and 42082 transitions. [2020-10-14 22:57:43,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:57:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 36773 states and 42082 transitions. [2020-10-14 22:57:43,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2020-10-14 22:57:43,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:57:43,258 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:57:43,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:57:43,258 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:57:43,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:57:43,259 INFO L82 PathProgramCache]: Analyzing trace with hash -151448261, now seen corresponding path program 1 times [2020-10-14 22:57:43,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:57:43,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915502310] [2020-10-14 22:57:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:57:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:48,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:48,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 737 [2020-10-14 22:57:48,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:57:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 22:57:48,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:48,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:57:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:57:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-14 22:57:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:48,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:57:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:48,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:48,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:57:48,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:57:48,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:48,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:57:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:57:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:57:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:57:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:48,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:48,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:57:48,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 22:57:48,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:48,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:48,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:57:48,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:57:48,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-14 22:57:48,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:57:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:48,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:48,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:57:48,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 22:57:48,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:48,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:57:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:57:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 22:57:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:48,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-14 22:57:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:49,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:49,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 22:57:49,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:57:49,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:49,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:57:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 22:57:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:57:49,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:57:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:49,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:49,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:49,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:57:49,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:49,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:57:49,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:49,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:49,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:57:49,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 22:57:49,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:57:49,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-14 22:57:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:49,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:49,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:49,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:57:49,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:49,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:57:49,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:49,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:57:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 22:57:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:57:49,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:57:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-14 22:57:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:49,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:49,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:49,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 22:57:49,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:49,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 22:57:49,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:49,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:57:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 22:57:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:57:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:57:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 235 proven. 336 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2020-10-14 22:57:49,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915502310] [2020-10-14 22:57:49,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:57:49,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:57:49,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335665035] [2020-10-14 22:57:49,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:57:49,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:57:49,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:57:49,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:57:49,614 INFO L87 Difference]: Start difference. First operand 36773 states and 42082 transitions. Second operand 9 states. [2020-10-14 22:58:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:58:01,753 INFO L93 Difference]: Finished difference Result 88677 states and 103754 transitions. [2020-10-14 22:58:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 22:58:01,754 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 717 [2020-10-14 22:58:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:58:01,852 INFO L225 Difference]: With dead ends: 88677 [2020-10-14 22:58:01,852 INFO L226 Difference]: Without dead ends: 51910 [2020-10-14 22:58:01,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-14 22:58:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51910 states. [2020-10-14 22:58:02,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51910 to 51078. [2020-10-14 22:58:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51078 states. [2020-10-14 22:58:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51078 states to 51078 states and 58150 transitions. [2020-10-14 22:58:02,881 INFO L78 Accepts]: Start accepts. Automaton has 51078 states and 58150 transitions. Word has length 717 [2020-10-14 22:58:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:58:02,882 INFO L479 AbstractCegarLoop]: Abstraction has 51078 states and 58150 transitions. [2020-10-14 22:58:02,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:58:02,882 INFO L276 IsEmpty]: Start isEmpty. Operand 51078 states and 58150 transitions. [2020-10-14 22:58:02,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2020-10-14 22:58:02,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:58:02,907 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:02,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:58:02,908 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:58:02,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:58:02,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1771734986, now seen corresponding path program 1 times [2020-10-14 22:58:02,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:58:02,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815618783] [2020-10-14 22:58:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:58:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:03,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:03,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking...