/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:08:58,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:08:58,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:08:58,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:08:58,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:08:58,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:08:58,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:08:58,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:08:58,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:08:58,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:08:58,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:08:58,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:08:58,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:08:58,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:08:58,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:08:58,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:08:58,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:08:58,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:08:58,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:08:58,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:08:58,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:08:58,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:08:58,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:08:58,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:08:58,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:08:58,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:08:58,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:08:58,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:08:58,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:08:58,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:08:58,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:08:58,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:08:58,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:08:58,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:08:58,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:08:58,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:08:58,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:08:58,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:08:58,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:08:58,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:08:58,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:08:58,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:08:58,417 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:08:58,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:08:58,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:08:58,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:08:58,422 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:08:58,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:08:58,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:08:58,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:08:58,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:08:58,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:08:58,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:08:58,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:08:58,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:08:58,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:08:58,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:08:58,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:08:58,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:08:58,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:08:58,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:08:58,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:08:58,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:08:58,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:58,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:08:58,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:08:58,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:08:58,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:08:58,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:08:58,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:08:58,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:08:58,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:08:58,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:08:58,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:08:58,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:08:58,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:08:58,988 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:08:58,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label20.c [2020-09-25 10:08:59,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d40cf82b3/2f1ecc17e4674241a4d58d8d8c641ec8/FLAG34aa35105 [2020-09-25 10:08:59,724 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:08:59,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label20.c [2020-09-25 10:08:59,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d40cf82b3/2f1ecc17e4674241a4d58d8d8c641ec8/FLAG34aa35105 [2020-09-25 10:08:59,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d40cf82b3/2f1ecc17e4674241a4d58d8d8c641ec8 [2020-09-25 10:08:59,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:08:59,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:08:59,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:59,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:08:59,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:08:59,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:59" (1/1) ... [2020-09-25 10:08:59,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:59, skipping insertion in model container [2020-09-25 10:08:59,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:59" (1/1) ... [2020-09-25 10:09:00,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:00,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:00,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:00,506 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:00,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:00,729 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:00,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:00 WrapperNode [2020-09-25 10:09:00,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:00,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:00,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:00,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:00,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:00" (1/1) ... [2020-09-25 10:09:00,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:00" (1/1) ... [2020-09-25 10:09:00,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:00" (1/1) ... [2020-09-25 10:09:00,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:00" (1/1) ... [2020-09-25 10:09:00,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:00" (1/1) ... [2020-09-25 10:09:00,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:00" (1/1) ... [2020-09-25 10:09:00,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:00" (1/1) ... [2020-09-25 10:09:00,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:00,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:00,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:00,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:00,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:02,707 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:02,707 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:02,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:02 BoogieIcfgContainer [2020-09-25 10:09:02,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:02,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:02,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:02,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:02,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:08:59" (1/3) ... [2020-09-25 10:09:02,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:02, skipping insertion in model container [2020-09-25 10:09:02,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:00" (2/3) ... [2020-09-25 10:09:02,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:02, skipping insertion in model container [2020-09-25 10:09:02,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:02" (3/3) ... [2020-09-25 10:09:02,726 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label20.c [2020-09-25 10:09:02,738 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:02,749 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:02,772 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:02,807 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:02,807 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:02,807 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:02,808 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:02,808 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:02,808 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:02,808 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:02,808 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 10:09:02,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:02,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:02,864 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:02,873 INFO L82 PathProgramCache]: Analyzing trace with hash -17794678, now seen corresponding path program 1 times [2020-09-25 10:09:02,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:02,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 10:09:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:03,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:03,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:08,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:08,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 10:09:08,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:09:08,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:09:08,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:08,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:09:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 10:09:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:09:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:08,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:08,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:08,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:08,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:08,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:09:08,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:08,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:08,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:08,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 10:09:08,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:09:08,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:09:08,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864530507] [2020-09-25 10:09:08,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:09:08,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:08,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:09:08,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:09:08,498 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:09:10,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:10,667 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 10:09:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:09:10,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-09-25 10:09:10,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:10,704 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 10:09:10,705 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 10:09:10,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:09:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 10:09:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 10:09:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 10:09:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 10:09:10,827 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 125 [2020-09-25 10:09:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:10,828 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 10:09:10,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:09:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 10:09:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 10:09:10,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:10,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:10,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:09:10,842 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:10,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:10,843 INFO L82 PathProgramCache]: Analyzing trace with hash 789536943, now seen corresponding path program 1 times [2020-09-25 10:09:10,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:10,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470252406] [2020-09-25 10:09:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:15,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:15,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 10:09:15,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:09:15,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:15,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:09:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:16,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:16,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:16,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:16,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:09:16,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:16,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:16,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:16,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:16,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:09:16,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 10:09:16,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:16,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:09:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:16,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470252406] [2020-09-25 10:09:16,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:16,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:16,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076067779] [2020-09-25 10:09:16,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:16,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:16,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:16,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:16,630 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 11 states. [2020-09-25 10:09:19,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:19,961 INFO L93 Difference]: Finished difference Result 1381 states and 1829 transitions. [2020-09-25 10:09:19,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:09:19,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 159 [2020-09-25 10:09:19,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:19,969 INFO L225 Difference]: With dead ends: 1381 [2020-09-25 10:09:19,969 INFO L226 Difference]: Without dead ends: 689 [2020-09-25 10:09:19,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:09:19,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-09-25 10:09:20,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 521. [2020-09-25 10:09:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-09-25 10:09:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 585 transitions. [2020-09-25 10:09:20,008 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 585 transitions. Word has length 159 [2020-09-25 10:09:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:20,008 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 585 transitions. [2020-09-25 10:09:20,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 585 transitions. [2020-09-25 10:09:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 10:09:20,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:20,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:20,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:09:20,016 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:20,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1762086722, now seen corresponding path program 1 times [2020-09-25 10:09:20,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:20,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919904504] [2020-09-25 10:09:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:20,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:20,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:20,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:21,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:25,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 10:09:25,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:09:25,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:25,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:09:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:25,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:25,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:25,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:25,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:25,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:09:25,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:25,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:25,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:25,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:25,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:25,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:09:25,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:25,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:09:25,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 10:09:25,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:25,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:09:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:09:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:25,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919904504] [2020-09-25 10:09:25,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:25,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:25,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501278067] [2020-09-25 10:09:25,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:25,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:25,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:25,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:25,916 INFO L87 Difference]: Start difference. First operand 521 states and 585 transitions. Second operand 11 states. [2020-09-25 10:09:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:28,874 INFO L93 Difference]: Finished difference Result 939 states and 1010 transitions. [2020-09-25 10:09:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:09:28,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 163 [2020-09-25 10:09:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:28,878 INFO L225 Difference]: With dead ends: 939 [2020-09-25 10:09:28,878 INFO L226 Difference]: Without dead ends: 514 [2020-09-25 10:09:28,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:09:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-09-25 10:09:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 500. [2020-09-25 10:09:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-09-25 10:09:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 560 transitions. [2020-09-25 10:09:28,897 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 560 transitions. Word has length 163 [2020-09-25 10:09:28,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:28,898 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 560 transitions. [2020-09-25 10:09:28,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 560 transitions. [2020-09-25 10:09:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 10:09:28,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:28,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:28,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:09:28,902 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:28,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:28,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1561304782, now seen corresponding path program 1 times [2020-09-25 10:09:28,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:28,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343192507] [2020-09-25 10:09:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:29,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:29,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:33,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:33,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 10:09:33,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:09:33,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:09:33,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:33,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:33,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:33,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:33,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-25 10:09:33,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:34,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:34,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:34,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:34,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:34,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:09:34,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:34,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:34,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:34,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:34,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 10:09:34,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:34,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-25 10:09:34,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:34,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 10:09:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:34,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343192507] [2020-09-25 10:09:34,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:34,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:34,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650608315] [2020-09-25 10:09:34,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:34,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:34,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:34,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:34,703 INFO L87 Difference]: Start difference. First operand 500 states and 560 transitions. Second operand 11 states. [2020-09-25 10:09:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:38,035 INFO L93 Difference]: Finished difference Result 1562 states and 1867 transitions. [2020-09-25 10:09:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:09:38,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 186 [2020-09-25 10:09:38,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:38,041 INFO L225 Difference]: With dead ends: 1562 [2020-09-25 10:09:38,042 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 10:09:38,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:09:38,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 10:09:38,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 804. [2020-09-25 10:09:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-09-25 10:09:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 878 transitions. [2020-09-25 10:09:38,071 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 878 transitions. Word has length 186 [2020-09-25 10:09:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:38,072 INFO L479 AbstractCegarLoop]: Abstraction has 804 states and 878 transitions. [2020-09-25 10:09:38,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 878 transitions. [2020-09-25 10:09:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 10:09:38,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:38,077 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:38,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:09:38,078 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:38,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1549411250, now seen corresponding path program 1 times [2020-09-25 10:09:38,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:38,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593853757] [2020-09-25 10:09:38,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:38,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:39,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:41,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:42,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:43,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:43,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 10:09:43,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:09:43,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:43,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:09:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:09:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-09-25 10:09:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:43,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:43,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:43,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:43,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:43,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:09:43,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:43,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:43,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:43,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:43,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:43,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:43,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:43,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:09:43,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:43,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:09:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:09:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:09:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:44,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:44,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:09:44,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-09-25 10:09:44,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:44,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:09:44,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 7 proven. 86 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:09:44,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593853757] [2020-09-25 10:09:44,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:44,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:09:44,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601934518] [2020-09-25 10:09:44,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:09:44,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:44,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:09:44,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:09:44,161 INFO L87 Difference]: Start difference. First operand 804 states and 878 transitions. Second operand 14 states. [2020-09-25 10:09:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:49,730 INFO L93 Difference]: Finished difference Result 3669 states and 4295 transitions. [2020-09-25 10:09:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 10:09:49,731 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 223 [2020-09-25 10:09:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:49,747 INFO L225 Difference]: With dead ends: 3669 [2020-09-25 10:09:49,748 INFO L226 Difference]: Without dead ends: 2525 [2020-09-25 10:09:49,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=235, Invalid=821, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 10:09:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2020-09-25 10:09:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2299. [2020-09-25 10:09:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-25 10:09:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2570 transitions. [2020-09-25 10:09:49,844 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2570 transitions. Word has length 223 [2020-09-25 10:09:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:49,844 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 2570 transitions. [2020-09-25 10:09:49,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:09:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2570 transitions. [2020-09-25 10:09:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 10:09:49,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:49,854 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:49,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:09:49,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:49,855 INFO L82 PathProgramCache]: Analyzing trace with hash -424187025, now seen corresponding path program 1 times [2020-09-25 10:09:49,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:49,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063978557] [2020-09-25 10:09:49,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:50,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking...