/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/Problem15_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:55:40,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:55:40,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:55:40,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:55:40,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:55:40,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:55:40,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:55:40,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:55:40,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:55:40,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:55:40,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:55:40,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:55:40,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:55:40,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:55:40,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:55:40,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:55:40,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:55:40,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:55:40,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:55:40,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:55:40,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:55:40,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:55:40,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:55:40,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:55:40,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:55:40,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:55:40,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:55:40,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:55:40,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:55:40,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:55:40,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:55:40,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:55:40,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:55:40,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:55:40,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:55:40,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:55:40,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:55:40,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:55:40,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:55:40,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:55:40,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:55:40,370 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 21:55:40,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:55:40,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:55:40,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:55:40,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:55:40,416 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:55:40,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:55:40,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:55:40,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:55:40,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:55:40,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:55:40,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:55:40,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:55:40,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:55:40,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:55:40,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:55:40,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:55:40,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:55:40,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:55:40,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:55:40,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:55:40,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:55:40,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:55:40,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:55:40,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:55:40,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:55:40,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:55:40,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:55:40,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:55:40,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:55:40,425 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 21:55:40,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:55:40,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:55:40,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:55:40,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:55:40,872 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:55:40,873 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16.c [2020-10-14 21:55:40,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09bc258f7/3e9cfc64034744ab97c2c3b006486226/FLAG919afd665 [2020-10-14 21:55:41,671 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:55:41,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label16.c [2020-10-14 21:55:41,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09bc258f7/3e9cfc64034744ab97c2c3b006486226/FLAG919afd665 [2020-10-14 21:55:41,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09bc258f7/3e9cfc64034744ab97c2c3b006486226 [2020-10-14 21:55:41,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:55:41,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:55:41,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:55:41,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:55:41,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:55:41,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:41" (1/1) ... [2020-10-14 21:55:41,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2658ecdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:41, skipping insertion in model container [2020-10-14 21:55:41,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:41" (1/1) ... [2020-10-14 21:55:41,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:55:41,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:55:42,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:55:42,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:55:43,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:55:43,405 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:55:43,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:43 WrapperNode [2020-10-14 21:55:43,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:55:43,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:55:43,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:55:43,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:55:43,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:43" (1/1) ... [2020-10-14 21:55:43,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:43" (1/1) ... [2020-10-14 21:55:43,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:43" (1/1) ... [2020-10-14 21:55:43,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:43" (1/1) ... [2020-10-14 21:55:43,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:43" (1/1) ... [2020-10-14 21:55:43,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:43" (1/1) ... [2020-10-14 21:55:43,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:43" (1/1) ... [2020-10-14 21:55:43,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:55:43,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:55:43,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:55:43,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:55:43,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:43" (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 21:55:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:55:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:55:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:55:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:55:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:55:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:55:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:55:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:55:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:55:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:55:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:55:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:55:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:55:49,563 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:55:49,563 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:55:49,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:49 BoogieIcfgContainer [2020-10-14 21:55:49,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:55:49,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:55:49,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:55:49,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:55:49,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:55:41" (1/3) ... [2020-10-14 21:55:49,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2345fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:49, skipping insertion in model container [2020-10-14 21:55:49,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:43" (2/3) ... [2020-10-14 21:55:49,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2345fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:49, skipping insertion in model container [2020-10-14 21:55:49,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:49" (3/3) ... [2020-10-14 21:55:49,579 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label16.c [2020-10-14 21:55:49,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:55:49,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:55:49,612 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:55:49,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:55:49,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:55:49,639 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:55:49,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:55:49,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:55:49,640 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:55:49,640 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:55:49,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:55:49,671 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:55:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 21:55:49,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:49,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:49,687 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:49,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:49,695 INFO L82 PathProgramCache]: Analyzing trace with hash -50532616, now seen corresponding path program 1 times [2020-10-14 21:55:49,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:49,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484829450] [2020-10-14 21:55:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:50,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:50,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:55:50,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-14 21:55:50,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:50,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:55:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:55:50,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:50,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:50,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:55:50,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:50,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:50,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:55:50,712 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 21:55:50,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484829450] [2020-10-14 21:55:50,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:55:50,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:55:50,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014908189] [2020-10-14 21:55:50,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:55:50,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:50,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:55:50,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:55:50,740 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:55:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:57,445 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 21:55:57,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:55:57,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 21:55:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:57,471 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 21:55:57,472 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 21:55:57,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:55:57,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 21:55:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 21:55:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 21:55:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 21:55:57,593 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 68 [2020-10-14 21:55:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:57,594 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 21:55:57,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:55:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 21:55:57,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 21:55:57,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:57,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:55:57,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:55:57,603 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:57,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:57,604 INFO L82 PathProgramCache]: Analyzing trace with hash -667127204, now seen corresponding path program 1 times [2020-10-14 21:55:57,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:57,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64843532] [2020-10-14 21:55:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:57,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:58,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:01,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:01,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 21:56:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:56:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3972 [2020-10-14 21:56:01,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:01,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 21:56:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:56:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:56:01,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:01,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:01,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:01,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:01,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:56:01,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:01,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:01,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:01,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:01,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:56:01,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 21:56:01,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:01,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:56:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:56:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:56:02,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64843532] [2020-10-14 21:56:02,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:02,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:56:02,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998590313] [2020-10-14 21:56:02,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:56:02,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:02,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:56:02,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:56:02,041 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-14 21:56:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:10,587 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-14 21:56:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:56:10,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 21:56:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:10,606 INFO L225 Difference]: With dead ends: 2008 [2020-10-14 21:56:10,607 INFO L226 Difference]: Without dead ends: 1323 [2020-10-14 21:56:10,610 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 21:56:10,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-14 21:56:10,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-14 21:56:10,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-14 21:56:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-14 21:56:10,689 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 137 [2020-10-14 21:56:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:10,692 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-14 21:56:10,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:56:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-14 21:56:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 21:56:10,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:10,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:56:10,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:56:10,707 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:10,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:10,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1931729567, now seen corresponding path program 1 times [2020-10-14 21:56:10,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:10,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724072058] [2020-10-14 21:56:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:11,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:15,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:15,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 21:56:15,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:56:15,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4415 [2020-10-14 21:56:15,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:15,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:56:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:56:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-14 21:56:15,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:15,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:15,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:15,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:15,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:15,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:56:15,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:15,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:56:15,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:15,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:15,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:15,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:15,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:56:15,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 21:56:15,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:15,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:56:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:56:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:15,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:16,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:16,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:16,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:56:16,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:56:16,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-14 21:56:16,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:16,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:56:16,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 57 proven. 143 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:56:16,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724072058] [2020-10-14 21:56:16,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:16,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:56:16,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899613941] [2020-10-14 21:56:16,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:56:16,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:16,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:56:16,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:56:16,343 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 9 states. [2020-10-14 21:56:39,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:39,993 INFO L93 Difference]: Finished difference Result 5765 states and 7541 transitions. [2020-10-14 21:56:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 21:56:39,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 242 [2020-10-14 21:56:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:40,022 INFO L225 Difference]: With dead ends: 5765 [2020-10-14 21:56:40,022 INFO L226 Difference]: Without dead ends: 4454 [2020-10-14 21:56:40,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-14 21:56:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2020-10-14 21:56:40,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 2908. [2020-10-14 21:56:40,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2908 states. [2020-10-14 21:56:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3742 transitions. [2020-10-14 21:56:40,134 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3742 transitions. Word has length 242 [2020-10-14 21:56:40,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:40,135 INFO L479 AbstractCegarLoop]: Abstraction has 2908 states and 3742 transitions. [2020-10-14 21:56:40,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:56:40,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3742 transitions. [2020-10-14 21:56:40,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-14 21:56:40,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:40,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:40,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:56:40,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:40,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2004927743, now seen corresponding path program 1 times [2020-10-14 21:56:40,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:40,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20360983] [2020-10-14 21:56:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:40,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:45,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:45,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-14 21:56:45,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:56:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 21:56:45,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:45,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:56:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:56:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 21:56:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:45,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:45,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:45,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:45,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:45,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:56:45,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:45,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:56:45,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:45,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:45,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:45,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:56:45,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-14 21:56:45,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:45,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:56:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:46,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:56:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:46,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:46,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:46,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:56:46,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 21:56:46,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:46,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:56:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 122 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:56:46,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20360983] [2020-10-14 21:56:46,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:46,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:56:46,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882647040] [2020-10-14 21:56:46,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:56:46,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:46,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:56:46,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:56:46,990 INFO L87 Difference]: Start difference. First operand 2908 states and 3742 transitions. Second operand 7 states. [2020-10-14 21:56:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:56,272 INFO L93 Difference]: Finished difference Result 6157 states and 7886 transitions. [2020-10-14 21:56:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:56:56,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-10-14 21:56:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:56,291 INFO L225 Difference]: With dead ends: 6157 [2020-10-14 21:56:56,291 INFO L226 Difference]: Without dead ends: 3255 [2020-10-14 21:56:56,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:56:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-10-14 21:56:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3234. [2020-10-14 21:56:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2020-10-14 21:56:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4094 transitions. [2020-10-14 21:56:56,382 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4094 transitions. Word has length 348 [2020-10-14 21:56:56,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:56,383 INFO L479 AbstractCegarLoop]: Abstraction has 3234 states and 4094 transitions. [2020-10-14 21:56:56,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4094 transitions. [2020-10-14 21:56:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-14 21:56:56,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:56,392 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:56,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:56:56,393 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:56,393 INFO L82 PathProgramCache]: Analyzing trace with hash -589544010, now seen corresponding path program 1 times [2020-10-14 21:56:56,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:56,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281141228] [2020-10-14 21:56:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:56,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:59,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:59,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-14 21:56:59,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2809 [2020-10-14 21:56:59,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:59,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-14 21:56:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:56:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:56:59,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:59,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:59,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:59,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:59,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:59,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:56:59,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:59,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:59,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:59,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:59,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:56:59,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:59,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 21:56:59,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:59,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:56:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:59,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:59,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:56:59,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 21:56:59,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:59,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:56:59,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 21:57:00,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281141228] [2020-10-14 21:57:00,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:00,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:57:00,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676480380] [2020-10-14 21:57:00,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:57:00,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:00,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:57:00,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:57:00,036 INFO L87 Difference]: Start difference. First operand 3234 states and 4094 transitions. Second operand 5 states. [2020-10-14 21:57:08,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:08,968 INFO L93 Difference]: Finished difference Result 7409 states and 9888 transitions. [2020-10-14 21:57:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:57:08,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 422 [2020-10-14 21:57:08,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:08,992 INFO L225 Difference]: With dead ends: 7409 [2020-10-14 21:57:08,993 INFO L226 Difference]: Without dead ends: 4488 [2020-10-14 21:57:09,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:57:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2020-10-14 21:57:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 4486. [2020-10-14 21:57:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4486 states. [2020-10-14 21:57:09,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 5931 transitions. [2020-10-14 21:57:09,117 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 5931 transitions. Word has length 422 [2020-10-14 21:57:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:09,118 INFO L479 AbstractCegarLoop]: Abstraction has 4486 states and 5931 transitions. [2020-10-14 21:57:09,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:57:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 5931 transitions. [2020-10-14 21:57:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-14 21:57:09,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:09,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:57:09,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:57:09,130 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:09,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:09,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1144444155, now seen corresponding path program 1 times [2020-10-14 21:57:09,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:09,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111188304] [2020-10-14 21:57:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:09,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:10,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:13,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:13,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-14 21:57:13,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:57:13,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4409 [2020-10-14 21:57:13,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:13,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:13,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:57:13,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:57:13,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 388 [2020-10-14 21:57:13,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:13,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:13,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:13,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:13,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:13,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:13,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:57:13,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:13,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:57:13,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:13,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:13,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:13,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:13,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:57:13,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:13,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:57:13,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:13,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:57:13,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:13,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:57:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:14,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:14,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:57:14,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:14,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 21:57:14,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:14,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:14,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:14,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:57:14,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:14,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 21:57:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:14,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:14,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:57:14,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 21:57:14,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:14,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:14,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:57:14,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 185 proven. 4 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-14 21:57:14,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111188304] [2020-10-14 21:57:14,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:14,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:57:14,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555566369] [2020-10-14 21:57:14,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:14,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:14,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:14,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:14,796 INFO L87 Difference]: Start difference. First operand 4486 states and 5931 transitions. Second operand 7 states. [2020-10-14 21:57:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:27,418 INFO L93 Difference]: Finished difference Result 11864 states and 16436 transitions. [2020-10-14 21:57:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:57:27,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 446 [2020-10-14 21:57:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:27,470 INFO L225 Difference]: With dead ends: 11864 [2020-10-14 21:57:27,470 INFO L226 Difference]: Without dead ends: 7691 [2020-10-14 21:57:27,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 21:57:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7691 states. [2020-10-14 21:57:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7691 to 7027. [2020-10-14 21:57:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7027 states. [2020-10-14 21:57:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 9007 transitions. [2020-10-14 21:57:27,678 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 9007 transitions. Word has length 446 [2020-10-14 21:57:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:27,679 INFO L479 AbstractCegarLoop]: Abstraction has 7027 states and 9007 transitions. [2020-10-14 21:57:27,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 9007 transitions. [2020-10-14 21:57:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-14 21:57:27,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:27,700 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 21:57:27,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:57:27,700 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:27,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1389479773, now seen corresponding path program 1 times [2020-10-14 21:57:27,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:27,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664478153] [2020-10-14 21:57:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:27,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:32,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:32,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-14 21:57:32,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:57:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 21:57:32,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:32,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:57:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:57:32,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:32,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:32,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:32,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:32,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:32,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:57:32,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:32,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:33,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:33,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:57:33,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:33,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 21:57:33,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:33,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:57:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:57:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:33,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:33,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:33,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:57:33,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:33,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 21:57:33,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:33,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:33,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:33,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:33,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:57:33,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:33,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-14 21:57:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:33,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:33,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:33,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:57:33,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:33,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:57:33,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:33,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 21:57:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:33,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 264 proven. 79 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 21:57:33,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664478153] [2020-10-14 21:57:33,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:33,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:33,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94560402] [2020-10-14 21:57:33,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:33,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:33,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:33,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:33,514 INFO L87 Difference]: Start difference. First operand 7027 states and 9007 transitions. Second operand 7 states. [2020-10-14 21:57:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:45,875 INFO L93 Difference]: Finished difference Result 16022 states and 21062 transitions. [2020-10-14 21:57:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:57:45,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 504 [2020-10-14 21:57:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:45,922 INFO L225 Difference]: With dead ends: 16022 [2020-10-14 21:57:45,922 INFO L226 Difference]: Without dead ends: 9308 [2020-10-14 21:57:45,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 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 21:57:45,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9308 states. [2020-10-14 21:57:46,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9308 to 9289. [2020-10-14 21:57:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9289 states. [2020-10-14 21:57:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9289 states to 9289 states and 11762 transitions. [2020-10-14 21:57:46,155 INFO L78 Accepts]: Start accepts. Automaton has 9289 states and 11762 transitions. Word has length 504 [2020-10-14 21:57:46,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:46,156 INFO L479 AbstractCegarLoop]: Abstraction has 9289 states and 11762 transitions. [2020-10-14 21:57:46,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 9289 states and 11762 transitions. [2020-10-14 21:57:46,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-10-14 21:57:46,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:46,169 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-14 21:57:46,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:57:46,170 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:46,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:46,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1069398792, now seen corresponding path program 1 times [2020-10-14 21:57:46,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:46,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302200765] [2020-10-14 21:57:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:46,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:46,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:47,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:47,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:51,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:51,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-14 21:57:51,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:57:51,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 21:57:51,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:51,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:57:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 21:57:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:51,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:51,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:51,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:51,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:51,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:57:51,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:51,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:51,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:51,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:51,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:57:51,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 21:57:51,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:51,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:57:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:57:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:51,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:51,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:57:51,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:51,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 21:57:51,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:51,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:57:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:51,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 21:57:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:51,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:51,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:57:51,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:51,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 21:57:51,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:51,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:57:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:51,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:51,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-14 21:57:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:51,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:51,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:51,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:57:51,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:51,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:57:51,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:51,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 21:57:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 344 proven. 158 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-14 21:57:52,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302200765] [2020-10-14 21:57:52,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:52,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:52,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730708816] [2020-10-14 21:57:52,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:52,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:52,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:52,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:52,178 INFO L87 Difference]: Start difference. First operand 9289 states and 11762 transitions. Second operand 7 states. [2020-10-14 21:58:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:03,676 INFO L93 Difference]: Finished difference Result 22039 states and 28317 transitions. [2020-10-14 21:58:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:58:03,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 525 [2020-10-14 21:58:03,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:03,715 INFO L225 Difference]: With dead ends: 22039 [2020-10-14 21:58:03,716 INFO L226 Difference]: Without dead ends: 11778 [2020-10-14 21:58:03,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11778 states. [2020-10-14 21:58:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11778 to 10845. [2020-10-14 21:58:03,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10845 states. [2020-10-14 21:58:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10845 states to 10845 states and 13062 transitions. [2020-10-14 21:58:03,974 INFO L78 Accepts]: Start accepts. Automaton has 10845 states and 13062 transitions. Word has length 525 [2020-10-14 21:58:03,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:03,975 INFO L479 AbstractCegarLoop]: Abstraction has 10845 states and 13062 transitions. [2020-10-14 21:58:03,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:03,975 INFO L276 IsEmpty]: Start isEmpty. Operand 10845 states and 13062 transitions. [2020-10-14 21:58:03,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-14 21:58:03,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:03,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2020-10-14 21:58:03,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:58:03,985 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:03,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:03,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1619535463, now seen corresponding path program 1 times [2020-10-14 21:58:03,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:03,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028952700] [2020-10-14 21:58:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:04,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:04,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:07,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:09,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:09,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-14 21:58:09,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:58:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 21:58:09,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:09,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:58:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:58:09,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:09,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:09,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:09,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:09,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:09,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:09,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:09,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:09,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:09,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:09,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:09,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:09,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:09,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:58:09,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:09,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 21:58:09,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:09,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:58:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:58:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:09,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:09,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:58:09,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 21:58:09,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:09,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:58:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:58:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:09,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:09,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:58:09,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:09,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:58:09,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:09,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 21:58:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 295 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 21:58:10,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028952700] [2020-10-14 21:58:10,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:10,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:10,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447840921] [2020-10-14 21:58:10,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:10,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:10,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:10,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:10,228 INFO L87 Difference]: Start difference. First operand 10845 states and 13062 transitions. Second operand 7 states. [2020-10-14 21:58:20,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:20,876 INFO L93 Difference]: Finished difference Result 22987 states and 27660 transitions. [2020-10-14 21:58:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:58:20,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 535 [2020-10-14 21:58:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:20,915 INFO L225 Difference]: With dead ends: 22987 [2020-10-14 21:58:20,915 INFO L226 Difference]: Without dead ends: 12455 [2020-10-14 21:58:20,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:20,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12455 states. [2020-10-14 21:58:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12455 to 12117. [2020-10-14 21:58:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12117 states. [2020-10-14 21:58:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12117 states to 12117 states and 14431 transitions. [2020-10-14 21:58:21,186 INFO L78 Accepts]: Start accepts. Automaton has 12117 states and 14431 transitions. Word has length 535 [2020-10-14 21:58:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:21,187 INFO L479 AbstractCegarLoop]: Abstraction has 12117 states and 14431 transitions. [2020-10-14 21:58:21,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:21,187 INFO L276 IsEmpty]: Start isEmpty. Operand 12117 states and 14431 transitions. [2020-10-14 21:58:21,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-14 21:58:21,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:21,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2020-10-14 21:58:21,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:58:21,200 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:21,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:21,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1997946081, now seen corresponding path program 1 times [2020-10-14 21:58:21,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:21,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847265467] [2020-10-14 21:58:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:21,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:24,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:24,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 21:58:24,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:58:24,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2669 [2020-10-14 21:58:24,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:24,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:58:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:58:24,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:24,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:24,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:24,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:24,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:24,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:24,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:24,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:24,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:24,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:24,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:24,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 21:58:24,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:24,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:24,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:24,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:24,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:24,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:58:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 21:58:24,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:24,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:58:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:58:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:24,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:24,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:58:24,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 21:58:24,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:24,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:58:24,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:58:24,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847265467] [2020-10-14 21:58:24,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:24,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:58:24,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179276886] [2020-10-14 21:58:24,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:58:24,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:24,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:58:24,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:58:24,860 INFO L87 Difference]: Start difference. First operand 12117 states and 14431 transitions. Second operand 8 states. [2020-10-14 21:58:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:34,822 INFO L93 Difference]: Finished difference Result 23645 states and 28336 transitions. [2020-10-14 21:58:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:58:34,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 547 [2020-10-14 21:58:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:34,876 INFO L225 Difference]: With dead ends: 23645 [2020-10-14 21:58:34,876 INFO L226 Difference]: Without dead ends: 11841 [2020-10-14 21:58:34,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:58:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11841 states. [2020-10-14 21:58:35,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11841 to 11812. [2020-10-14 21:58:35,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11812 states. [2020-10-14 21:58:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11812 states to 11812 states and 13428 transitions. [2020-10-14 21:58:35,143 INFO L78 Accepts]: Start accepts. Automaton has 11812 states and 13428 transitions. Word has length 547 [2020-10-14 21:58:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:35,144 INFO L479 AbstractCegarLoop]: Abstraction has 11812 states and 13428 transitions. [2020-10-14 21:58:35,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:58:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand 11812 states and 13428 transitions. [2020-10-14 21:58:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-14 21:58:35,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:35,154 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:58:35,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:58:35,154 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:35,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:35,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1276434464, now seen corresponding path program 1 times [2020-10-14 21:58:35,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:35,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667061806] [2020-10-14 21:58:35,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:35,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:36,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:37,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:37,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-14 21:58:37,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:58:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1785 [2020-10-14 21:58:37,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:37,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:58:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:58:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:37,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:37,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:37,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:37,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:58:37,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:37,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:37,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:37,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:37,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:37,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:37,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:37,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 21:58:37,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:37,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:37,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:37,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:37,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:58:37,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:37,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 21:58:37,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:37,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:37,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:37,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:37,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:58:37,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:37,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:58:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:37,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:37,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:58:37,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:37,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 21:58:37,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:37,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:58:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:58:37,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667061806] [2020-10-14 21:58:37,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:37,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:37,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739995600] [2020-10-14 21:58:37,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:37,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:37,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:37,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:37,716 INFO L87 Difference]: Start difference. First operand 11812 states and 13428 transitions. Second operand 7 states. [2020-10-14 21:58:50,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:50,910 INFO L93 Difference]: Finished difference Result 25812 states and 29565 transitions. [2020-10-14 21:58:50,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:58:50,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 559 [2020-10-14 21:58:50,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:50,959 INFO L225 Difference]: With dead ends: 25812 [2020-10-14 21:58:50,960 INFO L226 Difference]: Without dead ends: 14313 [2020-10-14 21:58:50,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14313 states. [2020-10-14 21:58:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14313 to 14297. [2020-10-14 21:58:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14297 states. [2020-10-14 21:58:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14297 states to 14297 states and 16235 transitions. [2020-10-14 21:58:51,261 INFO L78 Accepts]: Start accepts. Automaton has 14297 states and 16235 transitions. Word has length 559 [2020-10-14 21:58:51,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:51,262 INFO L479 AbstractCegarLoop]: Abstraction has 14297 states and 16235 transitions. [2020-10-14 21:58:51,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:51,263 INFO L276 IsEmpty]: Start isEmpty. Operand 14297 states and 16235 transitions. [2020-10-14 21:58:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2020-10-14 21:58:51,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:51,275 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:51,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:58:51,276 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:51,276 INFO L82 PathProgramCache]: Analyzing trace with hash 224375047, now seen corresponding path program 1 times [2020-10-14 21:58:51,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:51,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768006916] [2020-10-14 21:58:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:51,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:52,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:54,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:54,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:54,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:54,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 607 [2020-10-14 21:58:54,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:58:54,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3511 [2020-10-14 21:58:54,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:54,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:58:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:58:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 21:58:54,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:55,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:55,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:55,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:55,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:55,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:55,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:55,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:55,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:55,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 21:58:55,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:55,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:55,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:55,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:55,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:55,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:55,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:58:55,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:55,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:58:55,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:55,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:58:55,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:55,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:58:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:55,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:55,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:55,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:55,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 21:58:55,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:58:55,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 21:58:55,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:55,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:58:55,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 191 proven. 3 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-14 21:58:55,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768006916] [2020-10-14 21:58:55,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:55,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:58:55,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587587686] [2020-10-14 21:58:55,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:58:55,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:55,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:58:55,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:58:55,808 INFO L87 Difference]: Start difference. First operand 14297 states and 16235 transitions. Second operand 6 states. [2020-10-14 21:59:08,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:08,521 INFO L93 Difference]: Finished difference Result 34613 states and 40187 transitions. [2020-10-14 21:59:08,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:59:08,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 593 [2020-10-14 21:59:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:08,578 INFO L225 Difference]: With dead ends: 34613 [2020-10-14 21:59:08,579 INFO L226 Difference]: Without dead ends: 20319 [2020-10-14 21:59:08,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:59:08,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20319 states. [2020-10-14 21:59:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20319 to 20309. [2020-10-14 21:59:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20309 states. [2020-10-14 21:59:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20309 states to 20309 states and 23215 transitions. [2020-10-14 21:59:08,964 INFO L78 Accepts]: Start accepts. Automaton has 20309 states and 23215 transitions. Word has length 593 [2020-10-14 21:59:08,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:08,965 INFO L479 AbstractCegarLoop]: Abstraction has 20309 states and 23215 transitions. [2020-10-14 21:59:08,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:59:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 20309 states and 23215 transitions. [2020-10-14 21:59:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2020-10-14 21:59:08,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:08,983 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:08,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:59:08,983 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash -909630608, now seen corresponding path program 1 times [2020-10-14 21:59:08,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:08,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003257032] [2020-10-14 21:59:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:09,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:09,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:14,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:14,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 691 [2020-10-14 21:59:14,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:59:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-14 21:59:14,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:14,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:59:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:59:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 619 [2020-10-14 21:59:14,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:14,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:14,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:14,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:14,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:59:14,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:14,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:59:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:14,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:14,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:14,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:14,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:59:14,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:14,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-14 21:59:14,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:14,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-14 21:59:14,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:59:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:15,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:15,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:15,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:59:15,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 21:59:15,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:15,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:59:15,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:15,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:59:15,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:59:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:59:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:15,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:15,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 21:59:15,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:59:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-14 21:59:15,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:15,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 21:59:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:59:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-14 21:59:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:16,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:16,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:59:16,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:16,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 21:59:16,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:16,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:16,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:59:16,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 326 proven. 249 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-14 21:59:16,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003257032] [2020-10-14 21:59:16,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:59:16,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 21:59:16,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123816034] [2020-10-14 21:59:16,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 21:59:16,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:59:16,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 21:59:16,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:59:16,775 INFO L87 Difference]: Start difference. First operand 20309 states and 23215 transitions. Second operand 12 states. [2020-10-14 21:59:16,927 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36