/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:37:35,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:37:35,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:37:35,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:37:35,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:37:35,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:37:35,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:37:35,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:37:35,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:37:35,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:37:35,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:37:35,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:37:35,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:37:35,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:37:35,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:37:35,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:37:35,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:37:35,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:37:35,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:37:35,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:37:35,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:37:35,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:37:35,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:37:35,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:37:35,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:37:35,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:37:35,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:37:35,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:37:35,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:37:35,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:37:35,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:37:35,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:37:35,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:37:35,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:37:35,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:37:35,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:37:35,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:37:35,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:37:35,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:37:35,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:37:35,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:37:35,420 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 [2020-10-13 08:37:35,453 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:37:35,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:37:35,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:37:35,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:37:35,455 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:37:35,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:37:35,456 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:37:35,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:37:35,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:37:35,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:37:35,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:37:35,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:37:35,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:37:35,457 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:37:35,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:37:35,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:37:35,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:37:35,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:37:35,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:37:35,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:37:35,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:37:35,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:37:35,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:37:35,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:37:35,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:37:35,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:37:35,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:37:35,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:37:35,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:37:35,461 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:37:35,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:37:35,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:37:35,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:37:35,791 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:37:35,792 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:37:35,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33.c [2020-10-13 08:37:35,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d04d99836/1d86e5dfcaad4955ad9fc84e099c021b/FLAG03bdf035f [2020-10-13 08:37:36,660 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:37:36,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label33.c [2020-10-13 08:37:36,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d04d99836/1d86e5dfcaad4955ad9fc84e099c021b/FLAG03bdf035f [2020-10-13 08:37:37,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d04d99836/1d86e5dfcaad4955ad9fc84e099c021b [2020-10-13 08:37:37,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:37:37,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:37:37,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:37:37,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:37:37,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:37:37,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:37:37" (1/1) ... [2020-10-13 08:37:37,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b1b478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:37, skipping insertion in model container [2020-10-13 08:37:37,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:37:37" (1/1) ... [2020-10-13 08:37:37,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:37:37,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:37:39,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:37:39,087 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:37:39,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:37:39,816 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:37:39,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:39 WrapperNode [2020-10-13 08:37:39,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:37:39,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:37:39,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:37:39,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:37:39,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:39" (1/1) ... [2020-10-13 08:37:39,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:39" (1/1) ... [2020-10-13 08:37:39,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:39" (1/1) ... [2020-10-13 08:37:39,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:39" (1/1) ... [2020-10-13 08:37:40,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:39" (1/1) ... [2020-10-13 08:37:40,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:39" (1/1) ... [2020-10-13 08:37:40,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:39" (1/1) ... [2020-10-13 08:37:40,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:37:40,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:37:40,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:37:40,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:37:40,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:39" (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 [2020-10-13 08:37:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:37:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:37:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:37:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:37:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:37:40,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:37:40,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:37:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:37:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:37:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:37:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:37:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:37:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:37:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:37:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:37:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:37:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:37:51,673 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:37:51,673 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:37:51,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:37:51 BoogieIcfgContainer [2020-10-13 08:37:51,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:37:51,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:37:51,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:37:51,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:37:51,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:37:37" (1/3) ... [2020-10-13 08:37:51,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89bfe24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:37:51, skipping insertion in model container [2020-10-13 08:37:51,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:37:39" (2/3) ... [2020-10-13 08:37:51,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89bfe24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:37:51, skipping insertion in model container [2020-10-13 08:37:51,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:37:51" (3/3) ... [2020-10-13 08:37:51,709 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label33.c [2020-10-13 08:37:51,722 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:37:51,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:37:51,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:37:51,792 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:37:51,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:37:51,792 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:37:51,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:37:51,793 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:37:51,793 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:37:51,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:37:51,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:37:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:37:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 08:37:51,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:51,854 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] [2020-10-13 08:37:51,854 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:51,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:51,862 INFO L82 PathProgramCache]: Analyzing trace with hash 966889472, now seen corresponding path program 1 times [2020-10-13 08:37:51,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:51,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842009499] [2020-10-13 08:37:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:52,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:52,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:52,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 08:37:52,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-13 08:37:52,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:52,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:37:52,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:37:52,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 08:37:52,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:37:52,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:52,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:52,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:52,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:52,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 08:37:52,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:37:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:37:52,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842009499] [2020-10-13 08:37:52,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:37:52,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:37:52,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417849511] [2020-10-13 08:37:52,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:37:52,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:52,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:37:52,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:37:52,782 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:38:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:08,902 INFO L93 Difference]: Finished difference Result 3204 states and 5913 transitions. [2020-10-13 08:38:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:08,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-13 08:38:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:08,949 INFO L225 Difference]: With dead ends: 3204 [2020-10-13 08:38:08,949 INFO L226 Difference]: Without dead ends: 2006 [2020-10-13 08:38:08,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2020-10-13 08:38:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1920. [2020-10-13 08:38:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-13 08:38:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3311 transitions. [2020-10-13 08:38:09,187 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3311 transitions. Word has length 41 [2020-10-13 08:38:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:09,190 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3311 transitions. [2020-10-13 08:38:09,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:38:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3311 transitions. [2020-10-13 08:38:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 08:38:09,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:09,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:38:09,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:38:09,210 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:09,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1658513383, now seen corresponding path program 1 times [2020-10-13 08:38:09,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:09,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160678597] [2020-10-13 08:38:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:09,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:11,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:11,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:38:11,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:38:11,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-10-13 08:38:11,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:38:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:38:11,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:38:11,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:11,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:11,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:11,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:38:11,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:11,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:11,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:11,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:11,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:38:11,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:11,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:38:11,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:38:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:38:11,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160678597] [2020-10-13 08:38:11,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:11,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:38:11,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788325831] [2020-10-13 08:38:11,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:38:11,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:11,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:38:11,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:11,545 INFO L87 Difference]: Start difference. First operand 1920 states and 3311 transitions. Second operand 5 states. [2020-10-13 08:38:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:28,671 INFO L93 Difference]: Finished difference Result 3866 states and 6660 transitions. [2020-10-13 08:38:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:28,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 08:38:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:28,687 INFO L225 Difference]: With dead ends: 3866 [2020-10-13 08:38:28,687 INFO L226 Difference]: Without dead ends: 1935 [2020-10-13 08:38:28,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:38:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-10-13 08:38:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1920. [2020-10-13 08:38:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-13 08:38:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3309 transitions. [2020-10-13 08:38:28,755 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3309 transitions. Word has length 110 [2020-10-13 08:38:28,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:28,756 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3309 transitions. [2020-10-13 08:38:28,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:38:28,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3309 transitions. [2020-10-13 08:38:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 08:38:28,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:28,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:38:28,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:38:28,760 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:28,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:28,760 INFO L82 PathProgramCache]: Analyzing trace with hash 74426312, now seen corresponding path program 1 times [2020-10-13 08:38:28,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:28,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7627803] [2020-10-13 08:38:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:28,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:29,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:29,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:29,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 08:38:29,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:38:29,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-13 08:38:29,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:38:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:38:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:30,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:30,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:30,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:30,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:38:30,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:30,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:30,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:38:30,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:30,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:38:30,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:38:30,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:38:30,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7627803] [2020-10-13 08:38:30,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:30,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:38:30,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455671020] [2020-10-13 08:38:30,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:38:30,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:30,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:38:30,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:30,261 INFO L87 Difference]: Start difference. First operand 1920 states and 3309 transitions. Second operand 5 states. [2020-10-13 08:38:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:55,023 INFO L93 Difference]: Finished difference Result 4767 states and 8370 transitions. [2020-10-13 08:38:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:55,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 08:38:55,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:55,050 INFO L225 Difference]: With dead ends: 4767 [2020-10-13 08:38:55,051 INFO L226 Difference]: Without dead ends: 2853 [2020-10-13 08:38:55,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:38:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2020-10-13 08:38:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 2804. [2020-10-13 08:38:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2804 states. [2020-10-13 08:38:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 4588 transitions. [2020-10-13 08:38:55,163 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 4588 transitions. Word has length 111 [2020-10-13 08:38:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:55,166 INFO L479 AbstractCegarLoop]: Abstraction has 2804 states and 4588 transitions. [2020-10-13 08:38:55,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:38:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 4588 transitions. [2020-10-13 08:38:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 08:38:55,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:55,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:38:55,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:38:55,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:55,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:55,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1434785027, now seen corresponding path program 1 times [2020-10-13 08:38:55,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:55,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612503164] [2020-10-13 08:38:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:56,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:56,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:38:56,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:38:56,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-13 08:38:56,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 08:38:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:38:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:56,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:56,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:56,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:56,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:38:56,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:56,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:56,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:56,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:56,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:56,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:38:56,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:38:56,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:38:56,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:38:56,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612503164] [2020-10-13 08:38:56,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:56,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:38:56,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340885211] [2020-10-13 08:38:56,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:38:56,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:56,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:38:56,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:56,310 INFO L87 Difference]: Start difference. First operand 2804 states and 4588 transitions. Second operand 5 states. [2020-10-13 08:39:18,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:39:18,244 INFO L93 Difference]: Finished difference Result 8107 states and 13474 transitions. [2020-10-13 08:39:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:39:18,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 08:39:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:39:18,276 INFO L225 Difference]: With dead ends: 8107 [2020-10-13 08:39:18,276 INFO L226 Difference]: Without dead ends: 5309 [2020-10-13 08:39:18,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:39:18,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5309 states. [2020-10-13 08:39:18,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5309 to 5279. [2020-10-13 08:39:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5279 states. [2020-10-13 08:39:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 7611 transitions. [2020-10-13 08:39:18,439 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 7611 transitions. Word has length 112 [2020-10-13 08:39:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:39:18,440 INFO L479 AbstractCegarLoop]: Abstraction has 5279 states and 7611 transitions. [2020-10-13 08:39:18,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:39:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 7611 transitions. [2020-10-13 08:39:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 08:39:18,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:39:18,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:39:18,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:39:18,444 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:39:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:39:18,444 INFO L82 PathProgramCache]: Analyzing trace with hash 860041637, now seen corresponding path program 1 times [2020-10-13 08:39:18,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:39:18,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424752388] [2020-10-13 08:39:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:39:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:18,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:18,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:18,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:19,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:19,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 08:39:19,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:39:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1484 [2020-10-13 08:39:19,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:39:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:39:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:39:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:20,269 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-10-13 08:39:20,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:39:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:20,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:20,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:20,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:39:20,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:20,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:39:20,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:20,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:20,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:20,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:39:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:20,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:20,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:20,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:39:20,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 08:39:20,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:39:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:39:20,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:39:20,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424752388] [2020-10-13 08:39:20,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:39:20,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:39:20,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277286848] [2020-10-13 08:39:20,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:39:20,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:39:20,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:39:20,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:39:20,650 INFO L87 Difference]: Start difference. First operand 5279 states and 7611 transitions. Second operand 6 states. [2020-10-13 08:39:21,880 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-13 08:39:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:39:40,975 INFO L93 Difference]: Finished difference Result 10592 states and 15287 transitions. [2020-10-13 08:39:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 08:39:40,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-13 08:39:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:39:41,008 INFO L225 Difference]: With dead ends: 10592 [2020-10-13 08:39:41,008 INFO L226 Difference]: Without dead ends: 5287 [2020-10-13 08:39:41,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:39:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2020-10-13 08:39:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 5279. [2020-10-13 08:39:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5279 states. [2020-10-13 08:39:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 7605 transitions. [2020-10-13 08:39:41,167 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 7605 transitions. Word has length 116 [2020-10-13 08:39:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:39:41,168 INFO L479 AbstractCegarLoop]: Abstraction has 5279 states and 7605 transitions. [2020-10-13 08:39:41,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:39:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 7605 transitions. [2020-10-13 08:39:41,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 08:39:41,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:39:41,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:39:41,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:39:41,171 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:39:41,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:39:41,171 INFO L82 PathProgramCache]: Analyzing trace with hash 2052589682, now seen corresponding path program 1 times [2020-10-13 08:39:41,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:39:41,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809267391] [2020-10-13 08:39:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:39:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:41,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:41,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:42,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:42,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:39:42,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:39:42,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1579 [2020-10-13 08:39:42,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:39:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:39:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:39:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:39:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:42,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:42,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:42,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:39:42,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:42,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:39:42,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:42,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:42,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:39:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:43,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:43,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:39:43,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:43,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:39:43,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:39:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:39:43,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:39:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:39:43,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809267391] [2020-10-13 08:39:43,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:39:43,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:39:43,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158636550] [2020-10-13 08:39:43,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:39:43,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:39:43,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:39:43,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:39:43,099 INFO L87 Difference]: Start difference. First operand 5279 states and 7605 transitions. Second operand 5 states. [2020-10-13 08:40:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:07,664 INFO L93 Difference]: Finished difference Result 13057 states and 19632 transitions. [2020-10-13 08:40:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:40:07,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 08:40:07,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:07,734 INFO L225 Difference]: With dead ends: 13057 [2020-10-13 08:40:07,735 INFO L226 Difference]: Without dead ends: 7784 [2020-10-13 08:40:07,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:40:07,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7784 states. [2020-10-13 08:40:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7784 to 7741. [2020-10-13 08:40:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7741 states. [2020-10-13 08:40:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7741 states to 7741 states and 10723 transitions. [2020-10-13 08:40:07,972 INFO L78 Accepts]: Start accepts. Automaton has 7741 states and 10723 transitions. Word has length 117 [2020-10-13 08:40:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:07,973 INFO L479 AbstractCegarLoop]: Abstraction has 7741 states and 10723 transitions. [2020-10-13 08:40:07,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:40:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7741 states and 10723 transitions. [2020-10-13 08:40:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 08:40:07,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:07,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:40:07,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:40:07,976 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:07,976 INFO L82 PathProgramCache]: Analyzing trace with hash -830711179, now seen corresponding path program 1 times [2020-10-13 08:40:07,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:07,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078345939] [2020-10-13 08:40:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:08,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:08,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:08,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:08,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 08:40:08,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:40:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-13 08:40:08,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:40:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:40:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:40:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:08,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:08,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:08,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:08,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:08,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:40:08,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:08,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:08,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:08,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:08,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:40:08,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 08:40:08,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 08:40:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:40:09,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078345939] [2020-10-13 08:40:09,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:40:09,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:40:09,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243602912] [2020-10-13 08:40:09,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:09,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:09,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:09,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:09,018 INFO L87 Difference]: Start difference. First operand 7741 states and 10723 transitions. Second operand 5 states. [2020-10-13 08:40:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:40,352 INFO L93 Difference]: Finished difference Result 17950 states and 25909 transitions. [2020-10-13 08:40:40,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:40:40,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 08:40:40,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:40,389 INFO L225 Difference]: With dead ends: 17950 [2020-10-13 08:40:40,389 INFO L226 Difference]: Without dead ends: 10215 [2020-10-13 08:40:40,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:40:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10215 states. [2020-10-13 08:40:40,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10215 to 10191. [2020-10-13 08:40:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10191 states. [2020-10-13 08:40:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10191 states to 10191 states and 13804 transitions. [2020-10-13 08:40:40,629 INFO L78 Accepts]: Start accepts. Automaton has 10191 states and 13804 transitions. Word has length 124 [2020-10-13 08:40:40,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:40,630 INFO L479 AbstractCegarLoop]: Abstraction has 10191 states and 13804 transitions. [2020-10-13 08:40:40,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:40:40,630 INFO L276 IsEmpty]: Start isEmpty. Operand 10191 states and 13804 transitions. [2020-10-13 08:40:40,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 08:40:40,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:40,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:40:40,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:40:40,633 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:40,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:40,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1625512005, now seen corresponding path program 1 times [2020-10-13 08:40:40,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:40,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641725391] [2020-10-13 08:40:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:40,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:40,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:41,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:41,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:40:41,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:40:41,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-13 08:40:41,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:40:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:40:41,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:40:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:41,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:41,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:41,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:40:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:41,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:41,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:40:41,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:41,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:40:41,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 08:40:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:40:41,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641725391] [2020-10-13 08:40:41,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:40:41,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:40:41,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617835296] [2020-10-13 08:40:41,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:41,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:41,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:41,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:41,731 INFO L87 Difference]: Start difference. First operand 10191 states and 13804 transitions. Second operand 5 states. [2020-10-13 08:41:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:05,768 INFO L93 Difference]: Finished difference Result 23750 states and 32862 transitions. [2020-10-13 08:41:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:41:05,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 08:41:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:05,820 INFO L225 Difference]: With dead ends: 23750 [2020-10-13 08:41:05,821 INFO L226 Difference]: Without dead ends: 13565 [2020-10-13 08:41:05,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:41:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13565 states. [2020-10-13 08:41:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13565 to 13480. [2020-10-13 08:41:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13480 states. [2020-10-13 08:41:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13480 states to 13480 states and 18475 transitions. [2020-10-13 08:41:06,123 INFO L78 Accepts]: Start accepts. Automaton has 13480 states and 18475 transitions. Word has length 131 [2020-10-13 08:41:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:06,124 INFO L479 AbstractCegarLoop]: Abstraction has 13480 states and 18475 transitions. [2020-10-13 08:41:06,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:41:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 13480 states and 18475 transitions. [2020-10-13 08:41:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 08:41:06,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:06,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:41:06,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:41:06,129 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:06,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:06,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1750881570, now seen corresponding path program 1 times [2020-10-13 08:41:06,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:06,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955762722] [2020-10-13 08:41:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:06,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:07,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:08,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:08,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 08:41:08,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:41:08,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2535 [2020-10-13 08:41:08,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:08,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:41:08,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 08:41:08,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:41:08,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:08,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:08,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:08,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:08,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:41:08,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:09,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:09,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:41:09,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 08:41:09,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 08:41:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:41:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:41:09,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955762722] [2020-10-13 08:41:09,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:41:09,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:41:09,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565587730] [2020-10-13 08:41:09,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:41:09,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:09,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:41:09,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:41:09,181 INFO L87 Difference]: Start difference. First operand 13480 states and 18475 transitions. Second operand 6 states. [2020-10-13 08:41:40,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:40,558 INFO L93 Difference]: Finished difference Result 39965 states and 56926 transitions. [2020-10-13 08:41:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:41:40,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-10-13 08:41:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:40,698 INFO L225 Difference]: With dead ends: 39965 [2020-10-13 08:41:40,699 INFO L226 Difference]: Without dead ends: 26491 [2020-10-13 08:41:40,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:41:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26491 states.