/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:35:27,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:35:27,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:35:27,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:35:27,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:35:27,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:35:27,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:35:27,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:35:27,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:35:27,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:35:27,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:35:27,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:35:27,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:35:27,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:35:27,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:35:27,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:35:27,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:35:27,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:35:27,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:35:27,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:35:27,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:35:27,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:35:27,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:35:27,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:35:27,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:35:27,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:35:27,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:35:27,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:35:27,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:35:27,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:35:27,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:35:27,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:35:27,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:35:27,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:35:27,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:35:27,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:35:27,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:35:27,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:35:27,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:35:27,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:35:27,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:35:27,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:35:27,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:35:27,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:35:27,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:35:27,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:35:27,567 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:35:27,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:35:27,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:35:27,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:35:27,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:35:27,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:35:27,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:35:27,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:35:27,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:35:27,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:35:27,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:35:27,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:35:27,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:35:27,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:35:27,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:35:27,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:35:27,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:35:27,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:35:27,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:35:27,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:35:27,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:35:27,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:35:27,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:35:27,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:35:27,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:35:27,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:35:27,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:35:27,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:35:27,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:35:27,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:35:27,945 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:35:27,946 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47.c [2020-10-14 22:35:28,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0c4f759b/8b4433944bbf45e8a26070999c5822c2/FLAGc89cac397 [2020-10-14 22:35:28,974 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:35:28,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label47.c [2020-10-14 22:35:29,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0c4f759b/8b4433944bbf45e8a26070999c5822c2/FLAGc89cac397 [2020-10-14 22:35:29,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0c4f759b/8b4433944bbf45e8a26070999c5822c2 [2020-10-14 22:35:29,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:35:29,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:35:29,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:35:29,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:35:29,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:35:29,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:35:29" (1/1) ... [2020-10-14 22:35:29,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39315203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:29, skipping insertion in model container [2020-10-14 22:35:29,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:35:29" (1/1) ... [2020-10-14 22:35:29,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:35:29,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:35:30,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:35:30,823 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:35:31,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:35:31,415 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:35:31,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:31 WrapperNode [2020-10-14 22:35:31,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:35:31,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:35:31,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:35:31,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:35:31,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:31" (1/1) ... [2020-10-14 22:35:31,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:31" (1/1) ... [2020-10-14 22:35:31,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:31" (1/1) ... [2020-10-14 22:35:31,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:31" (1/1) ... [2020-10-14 22:35:31,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:31" (1/1) ... [2020-10-14 22:35:31,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:31" (1/1) ... [2020-10-14 22:35:31,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:31" (1/1) ... [2020-10-14 22:35:31,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:35:31,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:35:31,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:35:31,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:35:31,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:35:31,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:35:31,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:35:31,828 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:35:31,828 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:35:31,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:35:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:35:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:35:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:35:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:35:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:35:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:35:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:35:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:35:41,053 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:35:41,054 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:35:41,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:35:41 BoogieIcfgContainer [2020-10-14 22:35:41,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:35:41,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:35:41,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:35:41,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:35:41,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:35:29" (1/3) ... [2020-10-14 22:35:41,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b5871f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:35:41, skipping insertion in model container [2020-10-14 22:35:41,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:31" (2/3) ... [2020-10-14 22:35:41,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b5871f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:35:41, skipping insertion in model container [2020-10-14 22:35:41,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:35:41" (3/3) ... [2020-10-14 22:35:41,075 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label47.c [2020-10-14 22:35:41,088 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:35:41,098 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:35:41,114 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:35:41,151 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:35:41,152 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:35:41,152 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:35:41,152 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:35:41,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:35:41,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:35:41,152 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:35:41,152 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:35:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:35:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 22:35:41,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:41,198 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] [2020-10-14 22:35:41,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:41,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:41,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1011667849, now seen corresponding path program 1 times [2020-10-14 22:35:41,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:41,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467286398] [2020-10-14 22:35:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:41,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:41,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 22:35:41,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:41,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-14 22:35:41,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:41,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:41,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:35:41,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:35:41,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 22:35:41,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:35:42,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:42,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:42,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:42,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:42,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:35:42,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:42,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:42,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:42,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:42,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:35:42,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:35:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:35:42,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467286398] [2020-10-14 22:35:42,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:35:42,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:35:42,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718614374] [2020-10-14 22:35:42,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:35:42,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:42,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:35:42,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:35:42,243 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:35:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:35:53,428 INFO L93 Difference]: Finished difference Result 1729 states and 3137 transitions. [2020-10-14 22:35:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:35:53,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 22:35:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:35:53,459 INFO L225 Difference]: With dead ends: 1729 [2020-10-14 22:35:53,459 INFO L226 Difference]: Without dead ends: 1047 [2020-10-14 22:35:53,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:35:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-10-14 22:35:53,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1028. [2020-10-14 22:35:53,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2020-10-14 22:35:53,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1763 transitions. [2020-10-14 22:35:53,602 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1763 transitions. Word has length 50 [2020-10-14 22:35:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:35:53,603 INFO L479 AbstractCegarLoop]: Abstraction has 1028 states and 1763 transitions. [2020-10-14 22:35:53,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:35:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1763 transitions. [2020-10-14 22:35:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 22:35:53,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:53,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:35:53,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:35:53,611 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:53,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:53,612 INFO L82 PathProgramCache]: Analyzing trace with hash -595107304, now seen corresponding path program 1 times [2020-10-14 22:35:53,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:53,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81140509] [2020-10-14 22:35:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:54,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:54,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:54,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:35:54,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:35:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-10-14 22:35:54,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:54,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:54,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:35:54,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:35:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:35:54,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:35:55,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:55,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:55,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:55,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:55,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:55,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:35:55,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:55,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:55,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:55,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:55,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:35:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:55,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:35:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:55,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:55,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:35:55,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:35:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-14 22:35:55,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:55,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:35:55,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:35:55,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81140509] [2020-10-14 22:35:55,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:35:55,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:35:55,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168870117] [2020-10-14 22:35:55,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:35:55,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:55,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:35:55,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:35:55,755 INFO L87 Difference]: Start difference. First operand 1028 states and 1763 transitions. Second operand 7 states. [2020-10-14 22:36:09,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:09,994 INFO L93 Difference]: Finished difference Result 3033 states and 5275 transitions. [2020-10-14 22:36:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:36:09,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-14 22:36:09,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:10,014 INFO L225 Difference]: With dead ends: 3033 [2020-10-14 22:36:10,015 INFO L226 Difference]: Without dead ends: 2011 [2020-10-14 22:36:10,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:36:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2020-10-14 22:36:10,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1961. [2020-10-14 22:36:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-10-14 22:36:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2962 transitions. [2020-10-14 22:36:10,111 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2962 transitions. Word has length 119 [2020-10-14 22:36:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:10,114 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 2962 transitions. [2020-10-14 22:36:10,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:36:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2962 transitions. [2020-10-14 22:36:10,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 22:36:10,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:10,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:10,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:36:10,134 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:10,134 INFO L82 PathProgramCache]: Analyzing trace with hash -52364396, now seen corresponding path program 1 times [2020-10-14 22:36:10,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:10,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764432584] [2020-10-14 22:36:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:10,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:10,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:10,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 22:36:10,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:36:10,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-14 22:36:10,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:10,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:36:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:36:10,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:11,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:11,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:11,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:11,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:11,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:11,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:36:11,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:11,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:11,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:11,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:11,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:11,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:36:11,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:11,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 22:36:11,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:11,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:36:11,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:11,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764432584] [2020-10-14 22:36:11,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:36:11,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:36:11,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080429175] [2020-10-14 22:36:11,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:36:11,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:11,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:36:11,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:36:11,390 INFO L87 Difference]: Start difference. First operand 1961 states and 2962 transitions. Second operand 7 states. [2020-10-14 22:36:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:25,101 INFO L93 Difference]: Finished difference Result 5752 states and 8837 transitions. [2020-10-14 22:36:25,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:36:25,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-14 22:36:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:25,129 INFO L225 Difference]: With dead ends: 5752 [2020-10-14 22:36:25,129 INFO L226 Difference]: Without dead ends: 3797 [2020-10-14 22:36:25,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:36:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2020-10-14 22:36:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2870. [2020-10-14 22:36:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2870 states. [2020-10-14 22:36:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3922 transitions. [2020-10-14 22:36:25,261 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3922 transitions. Word has length 121 [2020-10-14 22:36:25,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:25,264 INFO L479 AbstractCegarLoop]: Abstraction has 2870 states and 3922 transitions. [2020-10-14 22:36:25,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:36:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3922 transitions. [2020-10-14 22:36:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 22:36:25,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:25,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:25,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:36:25,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:25,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:25,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1782232224, now seen corresponding path program 1 times [2020-10-14 22:36:25,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:25,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945143796] [2020-10-14 22:36:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:25,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:25,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:26,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:26,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 22:36:26,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:36:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-10-14 22:36:26,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:26,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:36:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:36:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 22:36:26,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:26,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:26,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:26,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:26,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:26,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:36:26,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:26,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:26,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:26,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:26,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:36:26,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:26,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 22:36:26,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:26,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:36:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:36:26,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:27,170 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:27,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945143796] [2020-10-14 22:36:27,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:27,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:36:27,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939514023] [2020-10-14 22:36:27,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:36:27,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:27,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:36:27,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:36:27,177 INFO L87 Difference]: Start difference. First operand 2870 states and 3922 transitions. Second operand 8 states. [2020-10-14 22:36:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:44,136 INFO L93 Difference]: Finished difference Result 7635 states and 10444 transitions. [2020-10-14 22:36:44,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:36:44,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-14 22:36:44,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:44,170 INFO L225 Difference]: With dead ends: 7635 [2020-10-14 22:36:44,170 INFO L226 Difference]: Without dead ends: 4721 [2020-10-14 22:36:44,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:36:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4721 states. [2020-10-14 22:36:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4721 to 4683. [2020-10-14 22:36:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4683 states. [2020-10-14 22:36:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 6204 transitions. [2020-10-14 22:36:44,332 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 6204 transitions. Word has length 124 [2020-10-14 22:36:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:44,336 INFO L479 AbstractCegarLoop]: Abstraction has 4683 states and 6204 transitions. [2020-10-14 22:36:44,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:36:44,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 6204 transitions. [2020-10-14 22:36:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 22:36:44,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:44,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:44,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:36:44,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:44,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:44,340 INFO L82 PathProgramCache]: Analyzing trace with hash -259628044, now seen corresponding path program 1 times [2020-10-14 22:36:44,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:44,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806789885] [2020-10-14 22:36:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:44,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:44,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 22:36:44,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-14 22:36:44,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:44,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:36:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 22:36:44,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:44,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:44,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:44,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:44,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:44,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:36:44,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:44,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:44,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:44,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:44,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:44,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:44,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:44,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:44,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 22:36:44,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:44,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:36:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 22:36:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:45,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806789885] [2020-10-14 22:36:45,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:45,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:36:45,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871181081] [2020-10-14 22:36:45,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:36:45,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:45,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:36:45,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:36:45,038 INFO L87 Difference]: Start difference. First operand 4683 states and 6204 transitions. Second operand 5 states. [2020-10-14 22:36:55,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:55,280 INFO L93 Difference]: Finished difference Result 11599 states and 16339 transitions. [2020-10-14 22:36:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:36:55,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 22:36:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:55,320 INFO L225 Difference]: With dead ends: 11599 [2020-10-14 22:36:55,320 INFO L226 Difference]: Without dead ends: 7355 [2020-10-14 22:36:55,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:36:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2020-10-14 22:36:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7346. [2020-10-14 22:36:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7346 states. [2020-10-14 22:36:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 9798 transitions. [2020-10-14 22:36:55,668 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 9798 transitions. Word has length 137 [2020-10-14 22:36:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:55,671 INFO L479 AbstractCegarLoop]: Abstraction has 7346 states and 9798 transitions. [2020-10-14 22:36:55,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:36:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 9798 transitions. [2020-10-14 22:36:55,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 22:36:55,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:55,677 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:36:55,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:36:55,677 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:55,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1043404409, now seen corresponding path program 1 times [2020-10-14 22:36:55,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:55,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585503551] [2020-10-14 22:36:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:57,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:57,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 22:36:57,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:36:57,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1740 [2020-10-14 22:36:57,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:57,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:36:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 22:36:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:57,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:57,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:57,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:57,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:36:57,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:57,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:57,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:57,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:57,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:57,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 22:36:57,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:57,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:36:57,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:57,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:36:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:58,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:58,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:36:58,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 22:36:58,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:58,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:36:58,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:36:58,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585503551] [2020-10-14 22:36:58,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:58,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:36:58,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818107069] [2020-10-14 22:36:58,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:36:58,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:58,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:36:58,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:36:58,291 INFO L87 Difference]: Start difference. First operand 7346 states and 9798 transitions. Second operand 7 states. [2020-10-14 22:37:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:17,885 INFO L93 Difference]: Finished difference Result 18510 states and 25945 transitions. [2020-10-14 22:37:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:37:17,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-14 22:37:17,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:17,951 INFO L225 Difference]: With dead ends: 18510 [2020-10-14 22:37:17,952 INFO L226 Difference]: Without dead ends: 11156 [2020-10-14 22:37:17,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:37:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11156 states. [2020-10-14 22:37:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11156 to 10667. [2020-10-14 22:37:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10667 states. [2020-10-14 22:37:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10667 states to 10667 states and 14273 transitions. [2020-10-14 22:37:18,269 INFO L78 Accepts]: Start accepts. Automaton has 10667 states and 14273 transitions. Word has length 213 [2020-10-14 22:37:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:18,271 INFO L479 AbstractCegarLoop]: Abstraction has 10667 states and 14273 transitions. [2020-10-14 22:37:18,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:37:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 10667 states and 14273 transitions. [2020-10-14 22:37:18,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 22:37:18,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:18,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:37:18,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:37:18,279 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:18,280 INFO L82 PathProgramCache]: Analyzing trace with hash -619360112, now seen corresponding path program 1 times [2020-10-14 22:37:18,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:18,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376990072] [2020-10-14 22:37:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:18,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:19,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:21,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:21,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 22:37:21,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:37:21,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3084 [2020-10-14 22:37:21,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:21,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:21,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:37:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:37:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 22:37:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:21,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:21,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:21,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:37:21,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:21,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:21,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:37:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:21,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:21,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:21,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:37:21,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 22:37:21,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:21,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:37:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:21,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:37:21,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:21,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:37:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:22,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:22,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 22:37:22,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:22,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 22:37:22,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:22,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 22:37:22,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 87 proven. 5 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 22:37:22,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376990072] [2020-10-14 22:37:22,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:22,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:37:22,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770346713] [2020-10-14 22:37:22,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:37:22,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:22,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:37:22,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:37:22,385 INFO L87 Difference]: Start difference. First operand 10667 states and 14273 transitions. Second operand 9 states. [2020-10-14 22:38:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:00,766 INFO L93 Difference]: Finished difference Result 28392 states and 40245 transitions. [2020-10-14 22:38:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 22:38:00,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 271 [2020-10-14 22:38:00,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:00,843 INFO L225 Difference]: With dead ends: 28392 [2020-10-14 22:38:00,843 INFO L226 Difference]: Without dead ends: 16790 [2020-10-14 22:38:00,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-14 22:38:00,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16790 states. [2020-10-14 22:38:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16790 to 16651. [2020-10-14 22:38:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16651 states. [2020-10-14 22:38:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16651 states to 16651 states and 21416 transitions. [2020-10-14 22:38:01,589 INFO L78 Accepts]: Start accepts. Automaton has 16651 states and 21416 transitions. Word has length 271 [2020-10-14 22:38:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:01,590 INFO L479 AbstractCegarLoop]: Abstraction has 16651 states and 21416 transitions. [2020-10-14 22:38:01,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:38:01,591 INFO L276 IsEmpty]: Start isEmpty. Operand 16651 states and 21416 transitions. [2020-10-14 22:38:01,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 22:38:01,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:01,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:01,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:38:01,603 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:01,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:01,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1681743535, now seen corresponding path program 1 times [2020-10-14 22:38:01,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:01,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218061286] [2020-10-14 22:38:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:01,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:02,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:02,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:05,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:05,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-14 22:38:05,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:38:05,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4228 [2020-10-14 22:38:05,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:05,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:38:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:38:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-14 22:38:05,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:06,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:06,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:06,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:06,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:06,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:38:06,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:06,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:38:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:06,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:06,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:06,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:38:06,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 22:38:06,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:06,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:38:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:38:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:06,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:38:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:06,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:06,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:38:06,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:06,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 22:38:06,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:06,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:06,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:38:06,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:06,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:38:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:06,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:06,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:38:06,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 22:38:06,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:06,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:38:06,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 66 proven. 212 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 22:38:07,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218061286] [2020-10-14 22:38:07,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:07,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:38:07,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002570755] [2020-10-14 22:38:07,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:38:07,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:07,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:38:07,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:38:07,210 INFO L87 Difference]: Start difference. First operand 16651 states and 21416 transitions. Second operand 9 states. [2020-10-14 22:38:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:40,956 INFO L93 Difference]: Finished difference Result 39576 states and 56105 transitions. [2020-10-14 22:38:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 22:38:40,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 294 [2020-10-14 22:38:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:41,094 INFO L225 Difference]: With dead ends: 39576 [2020-10-14 22:38:41,095 INFO L226 Difference]: Without dead ends: 21996 [2020-10-14 22:38:41,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-14 22:38:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21996 states. [2020-10-14 22:38:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21996 to 21570. [2020-10-14 22:38:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21570 states. [2020-10-14 22:38:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21570 states to 21570 states and 27114 transitions. [2020-10-14 22:38:42,151 INFO L78 Accepts]: Start accepts. Automaton has 21570 states and 27114 transitions. Word has length 294 [2020-10-14 22:38:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:42,153 INFO L479 AbstractCegarLoop]: Abstraction has 21570 states and 27114 transitions. [2020-10-14 22:38:42,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:38:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 21570 states and 27114 transitions. [2020-10-14 22:38:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-14 22:38:42,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:42,163 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:42,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:38:42,164 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:42,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:42,164 INFO L82 PathProgramCache]: Analyzing trace with hash -737877017, now seen corresponding path program 1 times [2020-10-14 22:38:42,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:42,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628589657] [2020-10-14 22:38:42,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:44,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:47,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:47,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-14 22:38:47,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:38:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 22:38:47,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:47,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:47,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:38:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:38:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:47,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:47,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:47,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:47,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:47,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:38:47,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:47,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:47,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:47,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:47,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:38:47,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 22:38:47,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:47,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:38:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:47,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:38:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:47,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:47,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:47,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:38:47,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:47,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 22:38:47,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:47,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:38:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:48,124 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2020-10-14 22:38:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:38:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:48,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:48,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:38:48,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:48,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 22:38:48,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:48,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:48,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:48,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:38:48,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:48,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 217 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:38:48,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628589657] [2020-10-14 22:38:48,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:48,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:38:48,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277515723] [2020-10-14 22:38:48,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:38:48,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:48,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:38:48,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:38:48,836 INFO L87 Difference]: Start difference. First operand 21570 states and 27114 transitions. Second operand 7 states. [2020-10-14 22:39:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:12,753 INFO L93 Difference]: Finished difference Result 45482 states and 57253 transitions. [2020-10-14 22:39:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:39:12,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-14 22:39:12,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:12,851 INFO L225 Difference]: With dead ends: 45482 [2020-10-14 22:39:12,851 INFO L226 Difference]: Without dead ends: 24353 [2020-10-14 22:39:12,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:39:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24353 states. [2020-10-14 22:39:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24353 to 24256. [2020-10-14 22:39:13,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24256 states. [2020-10-14 22:39:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24256 states to 24256 states and 30283 transitions. [2020-10-14 22:39:13,558 INFO L78 Accepts]: Start accepts. Automaton has 24256 states and 30283 transitions. Word has length 317 [2020-10-14 22:39:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:13,559 INFO L479 AbstractCegarLoop]: Abstraction has 24256 states and 30283 transitions. [2020-10-14 22:39:13,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:39:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 24256 states and 30283 transitions. [2020-10-14 22:39:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 22:39:13,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:13,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:13,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:39:13,569 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:13,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:13,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2060655751, now seen corresponding path program 1 times [2020-10-14 22:39:13,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:13,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52446232] [2020-10-14 22:39:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:14,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:14,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:14,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-14 22:39:14,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:39:14,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1135 [2020-10-14 22:39:14,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:14,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-14 22:39:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 22:39:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:14,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:14,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:14,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:39:14,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:14,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:14,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:14,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:15,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:15,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:15,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 22:39:15,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:15,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-14 22:39:15,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:15,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-14 22:39:15,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:15,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:39:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:15,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:15,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 22:39:15,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:15,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:39:15,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:15,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 22:39:15,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:39:16,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52446232] [2020-10-14 22:39:16,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:16,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:39:16,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829825169] [2020-10-14 22:39:16,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:39:16,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:16,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:39:16,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:39:16,142 INFO L87 Difference]: Start difference. First operand 24256 states and 30283 transitions. Second operand 5 states.