/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:47:02,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:47:02,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:47:02,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:47:02,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:47:02,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:47:02,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:47:02,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:47:02,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:47:02,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:47:02,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:47:02,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:47:02,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:47:02,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:47:02,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:47:02,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:47:02,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:47:02,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:47:02,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:47:02,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:47:02,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:47:02,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:47:02,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:47:02,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:47:02,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:47:02,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:47:02,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:47:02,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:47:02,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:47:02,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:47:02,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:47:02,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:47:02,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:47:02,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:47:02,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:47:02,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:47:02,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:47:02,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:47:02,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:47:02,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:47:02,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:47:02,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:47:02,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:47:02,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:47:02,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:47:02,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:47:02,624 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:47:02,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:47:02,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:47:02,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:47:02,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:47:02,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:47:02,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:47:02,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:47:02,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:47:02,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:47:02,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:47:02,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:47:02,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:47:02,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:47:02,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:47:02,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:47:02,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:47:02,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:47:02,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:47:02,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:47:02,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:47:02,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:47:02,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:47:02,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:47:02,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:47:02,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:47:02,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:47:02,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:47:02,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:47:02,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:47:02,960 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:47:02,960 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29.c [2020-10-14 22:47:03,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c10d50729/0b7b288ad00b40ae9f2dcbb68fb50cab/FLAGbfb354ae0 [2020-10-14 22:47:03,769 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:47:03,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label29.c [2020-10-14 22:47:03,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c10d50729/0b7b288ad00b40ae9f2dcbb68fb50cab/FLAGbfb354ae0 [2020-10-14 22:47:03,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c10d50729/0b7b288ad00b40ae9f2dcbb68fb50cab [2020-10-14 22:47:03,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:47:03,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:47:03,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:47:03,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:47:03,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:47:03,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:47:03" (1/1) ... [2020-10-14 22:47:03,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363f8acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:03, skipping insertion in model container [2020-10-14 22:47:03,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:47:03" (1/1) ... [2020-10-14 22:47:03,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:47:04,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:47:05,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:47:05,477 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:47:05,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:47:06,002 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:47:06,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:06 WrapperNode [2020-10-14 22:47:06,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:47:06,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:47:06,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:47:06,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:47:06,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:06" (1/1) ... [2020-10-14 22:47:06,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:06" (1/1) ... [2020-10-14 22:47:06,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:06" (1/1) ... [2020-10-14 22:47:06,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:06" (1/1) ... [2020-10-14 22:47:06,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:06" (1/1) ... [2020-10-14 22:47:06,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:06" (1/1) ... [2020-10-14 22:47:06,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:06" (1/1) ... [2020-10-14 22:47:06,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:47:06,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:47:06,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:47:06,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:47:06,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:47:06,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:47:06,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:47:06,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:47:06,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:47:06,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 22:47:06,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:47:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:47:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:47:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 22:47:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:47:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:47:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:47:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:47:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:47:06,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:47:12,488 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:47:12,489 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:47:12,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:47:12 BoogieIcfgContainer [2020-10-14 22:47:12,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:47:12,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:47:12,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:47:12,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:47:12,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:47:03" (1/3) ... [2020-10-14 22:47:12,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b26c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:47:12, skipping insertion in model container [2020-10-14 22:47:12,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:47:06" (2/3) ... [2020-10-14 22:47:12,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b26c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:47:12, skipping insertion in model container [2020-10-14 22:47:12,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:47:12" (3/3) ... [2020-10-14 22:47:12,516 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label29.c [2020-10-14 22:47:12,528 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:47:12,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:47:12,555 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:47:12,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:47:12,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:47:12,588 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:47:12,588 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:47:12,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:47:12,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:47:12,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:47:12,589 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:47:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 22:47:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 22:47:12,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:47:12,645 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] [2020-10-14 22:47:12,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:47:12,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:47:12,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1247826190, now seen corresponding path program 1 times [2020-10-14 22:47:12,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:47:12,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780228751] [2020-10-14 22:47:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:47:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:13,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:13,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 22:47:13,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:47:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 22:47:13,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:13,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:47:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:47:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 22:47:13,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:47:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:47:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:13,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:13,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:13,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:47:13,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:47:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:47:13,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:13,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:47:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:47:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:47:13,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:47:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:47:13,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780228751] [2020-10-14 22:47:13,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:47:13,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:47:13,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825463934] [2020-10-14 22:47:13,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:47:13,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:47:13,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:47:13,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:47:13,344 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-14 22:47:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:47:21,630 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 22:47:21,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:47:21,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-14 22:47:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:47:21,680 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 22:47:21,680 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 22:47:21,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:47:21,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 22:47:21,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 22:47:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 22:47:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2643 transitions. [2020-10-14 22:47:21,862 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2643 transitions. Word has length 45 [2020-10-14 22:47:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:47:21,863 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2643 transitions. [2020-10-14 22:47:21,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:47:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2643 transitions. [2020-10-14 22:47:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 22:47:21,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:47:21,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:47:21,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:47:21,870 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:47:21,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:47:21,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1245198697, now seen corresponding path program 1 times [2020-10-14 22:47:21,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:47:21,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056991309] [2020-10-14 22:47:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:47:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:21,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:22,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:22,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:47:22,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:47:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-14 22:47:22,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:22,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:47:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:47:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:47:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:47:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:47:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:22,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:47:22,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:47:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:47:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:22,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:47:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:47:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:47:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:47:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:47:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:23,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:23,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:47:23,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:47:23,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 22:47:23,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:23,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:23,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:47:23,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:47:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:47:23,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:47:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:47:23,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056991309] [2020-10-14 22:47:23,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:47:23,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:47:23,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649787044] [2020-10-14 22:47:23,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:47:23,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:47:23,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:47:23,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:47:23,243 INFO L87 Difference]: Start difference. First operand 1425 states and 2643 transitions. Second operand 7 states. [2020-10-14 22:47:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:47:34,593 INFO L93 Difference]: Finished difference Result 4355 states and 8096 transitions. [2020-10-14 22:47:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:47:34,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-14 22:47:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:47:34,612 INFO L225 Difference]: With dead ends: 4355 [2020-10-14 22:47:34,612 INFO L226 Difference]: Without dead ends: 2936 [2020-10-14 22:47:34,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:47:34,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-10-14 22:47:34,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2877. [2020-10-14 22:47:34,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2877 states. [2020-10-14 22:47:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4346 transitions. [2020-10-14 22:47:34,718 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4346 transitions. Word has length 114 [2020-10-14 22:47:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:47:34,718 INFO L479 AbstractCegarLoop]: Abstraction has 2877 states and 4346 transitions. [2020-10-14 22:47:34,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:47:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4346 transitions. [2020-10-14 22:47:34,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 22:47:34,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:47:34,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:47:34,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:47:34,733 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:47:34,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:47:34,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1788227034, now seen corresponding path program 1 times [2020-10-14 22:47:34,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:47:34,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615258435] [2020-10-14 22:47:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:47:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:34,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:35,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:35,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 22:47:35,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:47:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-10-14 22:47:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:35,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:47:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:47:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:47:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:47:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:47:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:35,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:35,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:47:35,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:47:35,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:47:35,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:35,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:47:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:47:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:47:35,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:47:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:47:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:35,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:35,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:35,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:47:35,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:47:35,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 22:47:35,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:35,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:47:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:47:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:47:35,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:47:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:47:35,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615258435] [2020-10-14 22:47:35,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:47:35,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 22:47:35,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145522237] [2020-10-14 22:47:35,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:47:35,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:47:35,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:47:35,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:47:35,759 INFO L87 Difference]: Start difference. First operand 2877 states and 4346 transitions. Second operand 8 states. [2020-10-14 22:47:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:47:45,698 INFO L93 Difference]: Finished difference Result 8711 states and 13365 transitions. [2020-10-14 22:47:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:47:45,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-14 22:47:45,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:47:45,735 INFO L225 Difference]: With dead ends: 8711 [2020-10-14 22:47:45,735 INFO L226 Difference]: Without dead ends: 5840 [2020-10-14 22:47:45,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:47:45,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2020-10-14 22:47:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 5781. [2020-10-14 22:47:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5781 states. [2020-10-14 22:47:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5781 states to 5781 states and 8545 transitions. [2020-10-14 22:47:45,936 INFO L78 Accepts]: Start accepts. Automaton has 5781 states and 8545 transitions. Word has length 117 [2020-10-14 22:47:45,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:47:45,939 INFO L479 AbstractCegarLoop]: Abstraction has 5781 states and 8545 transitions. [2020-10-14 22:47:45,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:47:45,939 INFO L276 IsEmpty]: Start isEmpty. Operand 5781 states and 8545 transitions. [2020-10-14 22:47:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 22:47:45,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:47:45,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:47:45,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:47:45,951 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:47:45,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:47:45,951 INFO L82 PathProgramCache]: Analyzing trace with hash 807821071, now seen corresponding path program 1 times [2020-10-14 22:47:45,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:47:45,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053170893] [2020-10-14 22:47:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:47:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:46,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:47,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:47,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 22:47:47,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:47:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-10-14 22:47:47,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:47,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:47,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:47:47,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:47:47,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:47:47,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:47:47,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:47:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:47,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:47,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:47:47,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:47:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:47:47,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:47,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:47:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:47:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:47:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:47:47,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:47:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:47,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:47,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 22:47:47,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:47:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 22:47:47,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:47,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:47:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:47:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 22:47:47,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:47:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:47:47,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053170893] [2020-10-14 22:47:47,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:47:47,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:47:47,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274233919] [2020-10-14 22:47:47,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:47:47,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:47:47,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:47:47,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:47:47,685 INFO L87 Difference]: Start difference. First operand 5781 states and 8545 transitions. Second operand 7 states. [2020-10-14 22:47:58,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:47:58,686 INFO L93 Difference]: Finished difference Result 13095 states and 19409 transitions. [2020-10-14 22:47:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:47:58,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-14 22:47:58,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:47:58,733 INFO L225 Difference]: With dead ends: 13095 [2020-10-14 22:47:58,733 INFO L226 Difference]: Without dead ends: 7320 [2020-10-14 22:47:58,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:47:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2020-10-14 22:47:58,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 7281. [2020-10-14 22:47:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7281 states. [2020-10-14 22:47:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7281 states to 7281 states and 10324 transitions. [2020-10-14 22:47:58,919 INFO L78 Accepts]: Start accepts. Automaton has 7281 states and 10324 transitions. Word has length 142 [2020-10-14 22:47:58,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:47:58,922 INFO L479 AbstractCegarLoop]: Abstraction has 7281 states and 10324 transitions. [2020-10-14 22:47:58,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:47:58,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7281 states and 10324 transitions. [2020-10-14 22:47:58,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 22:47:58,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:47:58,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:47:58,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:47:58,926 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:47:58,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:47:58,926 INFO L82 PathProgramCache]: Analyzing trace with hash 725394782, now seen corresponding path program 1 times [2020-10-14 22:47:58,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:47:58,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818963576] [2020-10-14 22:47:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:47:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:58,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:59,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:47:59,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 22:47:59,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:47:59,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-10-14 22:47:59,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:47:59,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:47:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:47:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:47:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-14 22:47:59,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:47:59,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:47:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:59,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:00,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:00,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:48:00,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:48:00,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:00,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:48:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:48:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:48:00,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:00,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:48:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:00,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 22:48:00,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:00,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 22:48:00,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:00,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:48:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:48:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-14 22:48:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:48:00,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818963576] [2020-10-14 22:48:00,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:48:00,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:48:00,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754759985] [2020-10-14 22:48:00,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:48:00,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:48:00,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:48:00,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:48:00,468 INFO L87 Difference]: Start difference. First operand 7281 states and 10324 transitions. Second operand 6 states. [2020-10-14 22:48:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:48:10,854 INFO L93 Difference]: Finished difference Result 16822 states and 23222 transitions. [2020-10-14 22:48:10,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:48:10,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 231 [2020-10-14 22:48:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:48:10,905 INFO L225 Difference]: With dead ends: 16822 [2020-10-14 22:48:10,906 INFO L226 Difference]: Without dead ends: 9547 [2020-10-14 22:48:10,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:48:10,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9547 states. [2020-10-14 22:48:11,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 8727. [2020-10-14 22:48:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8727 states. [2020-10-14 22:48:11,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8727 states to 8727 states and 11852 transitions. [2020-10-14 22:48:11,132 INFO L78 Accepts]: Start accepts. Automaton has 8727 states and 11852 transitions. Word has length 231 [2020-10-14 22:48:11,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:48:11,132 INFO L479 AbstractCegarLoop]: Abstraction has 8727 states and 11852 transitions. [2020-10-14 22:48:11,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:48:11,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8727 states and 11852 transitions. [2020-10-14 22:48:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 22:48:11,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:48:11,138 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:48:11,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:48:11,139 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:48:11,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:48:11,139 INFO L82 PathProgramCache]: Analyzing trace with hash 958678563, now seen corresponding path program 1 times [2020-10-14 22:48:11,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:48:11,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879765746] [2020-10-14 22:48:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:48:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:11,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:11,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:12,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:12,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-14 22:48:12,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:48:12,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1453 [2020-10-14 22:48:12,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:12,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:48:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-14 22:48:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 22:48:12,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:48:12,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:48:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:12,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:12,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:48:12,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:48:12,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:12,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:12,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:48:12,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:48:12,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:48:12,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:12,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:48:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:12,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:12,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:12,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 22:48:12,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:12,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 22:48:12,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:12,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:48:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:48:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 22:48:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:48:13,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-14 22:48:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:13,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:13,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 22:48:13,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:13,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 22:48:13,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:13,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:48:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:48:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 22:48:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:48:13,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879765746] [2020-10-14 22:48:13,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:48:13,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:48:13,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134505539] [2020-10-14 22:48:13,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:48:13,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:48:13,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:48:13,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:48:13,441 INFO L87 Difference]: Start difference. First operand 8727 states and 11852 transitions. Second operand 7 states. [2020-10-14 22:48:26,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:48:26,590 INFO L93 Difference]: Finished difference Result 18412 states and 25780 transitions. [2020-10-14 22:48:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:48:26,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-14 22:48:26,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:48:26,624 INFO L225 Difference]: With dead ends: 18412 [2020-10-14 22:48:26,625 INFO L226 Difference]: Without dead ends: 8901 [2020-10-14 22:48:26,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:48:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8901 states. [2020-10-14 22:48:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8901 to 8717. [2020-10-14 22:48:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8717 states. [2020-10-14 22:48:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 10586 transitions. [2020-10-14 22:48:26,832 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 10586 transitions. Word has length 328 [2020-10-14 22:48:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:48:26,833 INFO L479 AbstractCegarLoop]: Abstraction has 8717 states and 10586 transitions. [2020-10-14 22:48:26,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:48:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 10586 transitions. [2020-10-14 22:48:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-14 22:48:26,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:48:26,845 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:48:26,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:48:26,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:48:26,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:48:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1710933436, now seen corresponding path program 1 times [2020-10-14 22:48:26,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:48:26,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185153602] [2020-10-14 22:48:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:48:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:27,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:32,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:32,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-14 22:48:32,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:48:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 22:48:32,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:32,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:48:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:48:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-14 22:48:32,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:48:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:32,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:32,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:48:32,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:48:32,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:32,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:48:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:48:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:48:32,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:48:32,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:48:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:32,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:32,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:48:32,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-14 22:48:32,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:32,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:32,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:48:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:48:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-14 22:48:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:33,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:48:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:33,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:33,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:48:33,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 22:48:33,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:33,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:33,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:48:33,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:48:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 22:48:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:33,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-14 22:48:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:34,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:34,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:34,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 22:48:34,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:34,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:48:34,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:34,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:34,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:48:34,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 22:48:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:48:34,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:48:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 76 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:48:34,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185153602] [2020-10-14 22:48:34,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:48:34,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:48:34,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649909115] [2020-10-14 22:48:34,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:48:34,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:48:34,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:48:34,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:48:34,449 INFO L87 Difference]: Start difference. First operand 8717 states and 10586 transitions. Second operand 9 states. [2020-10-14 22:48:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:48:46,180 INFO L93 Difference]: Finished difference Result 22069 states and 27345 transitions. [2020-10-14 22:48:46,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:48:46,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 449 [2020-10-14 22:48:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:48:46,222 INFO L225 Difference]: With dead ends: 22069 [2020-10-14 22:48:46,222 INFO L226 Difference]: Without dead ends: 14060 [2020-10-14 22:48:46,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:48:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14060 states. [2020-10-14 22:48:46,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14060 to 13904. [2020-10-14 22:48:46,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13904 states. [2020-10-14 22:48:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13904 states to 13904 states and 16510 transitions. [2020-10-14 22:48:46,514 INFO L78 Accepts]: Start accepts. Automaton has 13904 states and 16510 transitions. Word has length 449 [2020-10-14 22:48:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:48:46,515 INFO L479 AbstractCegarLoop]: Abstraction has 13904 states and 16510 transitions. [2020-10-14 22:48:46,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:48:46,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13904 states and 16510 transitions. [2020-10-14 22:48:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-14 22:48:46,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:48:46,552 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:48:46,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:48:46,552 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:48:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:48:46,553 INFO L82 PathProgramCache]: Analyzing trace with hash 981864901, now seen corresponding path program 1 times [2020-10-14 22:48:46,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:48:46,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966729661] [2020-10-14 22:48:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:48:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:46,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:51,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:51,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 996 [2020-10-14 22:48:51,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:48:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4289 [2020-10-14 22:48:51,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:51,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:48:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-14 22:48:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:48:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:51,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:48:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:51,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:51,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:48:51,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:51,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:48:51,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:51,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:48:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:48:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:48:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:51,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:48:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:51,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:51,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:51,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:48:51,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:51,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 22:48:51,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:51,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:48:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:48:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:48:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:48:51,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:48:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:51,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:51,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:48:51,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:51,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 22:48:51,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:51,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:48:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:48:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:48:51,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:48:51,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:48:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:51,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:51,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:48:51,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:48:51,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:51,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:48:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:48:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:48:51,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:52,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:48:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:52,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:52,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:48:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 22:48:52,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:52,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:48:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:48:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:48:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:48:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:48:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:52,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:52,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:48:52,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:52,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:48:52,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:52,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:52,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:48:52,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:48:52,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 22:48:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:48:52,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:48:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:48:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:48:52,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:48:52,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 22:48:52,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:48:52,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 22:48:52,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:48:52,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:48:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:48:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:48:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 22:48:52,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:48:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-14 22:48:53,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966729661] [2020-10-14 22:48:53,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:48:53,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:48:53,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73086669] [2020-10-14 22:48:53,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:48:53,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:48:53,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:48:53,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:48:53,285 INFO L87 Difference]: Start difference. First operand 13904 states and 16510 transitions. Second operand 7 states. [2020-10-14 22:49:05,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:49:05,092 INFO L93 Difference]: Finished difference Result 31021 states and 38065 transitions. [2020-10-14 22:49:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:49:05,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 976 [2020-10-14 22:49:05,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:49:05,149 INFO L225 Difference]: With dead ends: 31021 [2020-10-14 22:49:05,149 INFO L226 Difference]: Without dead ends: 18535 [2020-10-14 22:49:05,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:49:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18535 states. [2020-10-14 22:49:05,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18535 to 18405. [2020-10-14 22:49:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18405 states. [2020-10-14 22:49:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18405 states to 18405 states and 21984 transitions. [2020-10-14 22:49:05,521 INFO L78 Accepts]: Start accepts. Automaton has 18405 states and 21984 transitions. Word has length 976 [2020-10-14 22:49:05,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:49:05,524 INFO L479 AbstractCegarLoop]: Abstraction has 18405 states and 21984 transitions. [2020-10-14 22:49:05,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:49:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 18405 states and 21984 transitions. [2020-10-14 22:49:05,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2020-10-14 22:49:05,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:49:05,571 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:49:05,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:49:05,571 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:49:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:49:05,572 INFO L82 PathProgramCache]: Analyzing trace with hash -674541781, now seen corresponding path program 1 times [2020-10-14 22:49:05,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:49:05,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278866828] [2020-10-14 22:49:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:49:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:05,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:06,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:10,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:10,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1003 [2020-10-14 22:49:10,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:49:10,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-14 22:49:10,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:10,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:49:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-14 22:49:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:49:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:11,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:49:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:11,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:11,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:49:11,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:11,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:49:11,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:11,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:11,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:49:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:11,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:11,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:11,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:49:11,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 22:49:11,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:11,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:11,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:11,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:49:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:11,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:11,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:11,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:49:11,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:11,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 22:49:11,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:11,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:11,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:49:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:11,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:11,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:49:11,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:11,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:49:11,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:11,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:11,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:11,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:11,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:11,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:49:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:12,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:12,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:12,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-14 22:49:12,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 22:49:12,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:12,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:12,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:49:12,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:12,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-14 22:49:12,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:49:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:12,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 22:49:12,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:49:12,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:12,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:49:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 22:49:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:12,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-14 22:49:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:12,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:12,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 22:49:12,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 22:49:12,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:12,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:49:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:49:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 22:49:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-14 22:49:13,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278866828] [2020-10-14 22:49:13,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:49:13,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:49:13,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420873988] [2020-10-14 22:49:13,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:49:13,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:49:13,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:49:13,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:49:13,061 INFO L87 Difference]: Start difference. First operand 18405 states and 21984 transitions. Second operand 7 states. [2020-10-14 22:49:21,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:49:21,057 INFO L93 Difference]: Finished difference Result 36947 states and 44702 transitions. [2020-10-14 22:49:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:49:21,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 983 [2020-10-14 22:49:21,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:49:21,120 INFO L225 Difference]: With dead ends: 36947 [2020-10-14 22:49:21,121 INFO L226 Difference]: Without dead ends: 19960 [2020-10-14 22:49:21,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:49:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19960 states. [2020-10-14 22:49:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19960 to 19883. [2020-10-14 22:49:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19883 states. [2020-10-14 22:49:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19883 states to 19883 states and 23719 transitions. [2020-10-14 22:49:21,483 INFO L78 Accepts]: Start accepts. Automaton has 19883 states and 23719 transitions. Word has length 983 [2020-10-14 22:49:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:49:21,485 INFO L479 AbstractCegarLoop]: Abstraction has 19883 states and 23719 transitions. [2020-10-14 22:49:21,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:49:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 19883 states and 23719 transitions. [2020-10-14 22:49:21,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-14 22:49:21,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:49:21,500 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:49:21,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:49:21,501 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:49:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:49:21,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1497676960, now seen corresponding path program 1 times [2020-10-14 22:49:21,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:49:21,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270552461] [2020-10-14 22:49:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:49:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:21,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:26,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:26,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-14 22:49:26,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:49:26,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4760 [2020-10-14 22:49:26,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:26,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:26,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:49:26,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-14 22:49:26,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:49:26,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:26,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:49:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:26,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:26,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:26,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:49:26,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:49:26,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:26,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:26,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:26,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:26,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:26,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:49:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:26,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:26,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:49:26,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:26,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 22:49:26,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:26,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:26,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:27,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:49:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:27,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:27,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:49:27,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 22:49:27,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:27,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:27,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:49:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:27,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:27,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:27,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:49:27,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:49:27,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:27,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:27,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:49:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:27,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:27,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:49:27,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 22:49:27,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:27,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:49:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:49:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:49:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:27,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:27,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:49:27,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 22:49:27,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:27,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:49:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 22:49:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:49:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:27,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:27,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 22:49:27,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:27,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 22:49:27,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:27,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:49:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:49:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 22:49:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:49:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-14 22:49:28,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270552461] [2020-10-14 22:49:28,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:49:28,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:49:28,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962518841] [2020-10-14 22:49:28,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:49:28,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:49:28,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:49:28,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:49:28,525 INFO L87 Difference]: Start difference. First operand 19883 states and 23719 transitions. Second operand 7 states. [2020-10-14 22:49:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:49:37,623 INFO L93 Difference]: Finished difference Result 47863 states and 59152 transitions. [2020-10-14 22:49:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:49:37,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 997 [2020-10-14 22:49:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:49:37,705 INFO L225 Difference]: With dead ends: 47863 [2020-10-14 22:49:37,706 INFO L226 Difference]: Without dead ends: 29398 [2020-10-14 22:49:37,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:49:37,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29398 states. [2020-10-14 22:49:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29398 to 28598. [2020-10-14 22:49:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28598 states. [2020-10-14 22:49:38,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28598 states to 28598 states and 34064 transitions. [2020-10-14 22:49:38,256 INFO L78 Accepts]: Start accepts. Automaton has 28598 states and 34064 transitions. Word has length 997 [2020-10-14 22:49:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:49:38,257 INFO L479 AbstractCegarLoop]: Abstraction has 28598 states and 34064 transitions. [2020-10-14 22:49:38,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:49:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 28598 states and 34064 transitions. [2020-10-14 22:49:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2020-10-14 22:49:38,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:49:38,274 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:49:38,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:49:38,274 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:49:38,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:49:38,275 INFO L82 PathProgramCache]: Analyzing trace with hash 856914464, now seen corresponding path program 1 times [2020-10-14 22:49:38,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:49:38,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809285591] [2020-10-14 22:49:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:49:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:38,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:42,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:42,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1141 [2020-10-14 22:49:42,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:49:42,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4167 [2020-10-14 22:49:42,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:42,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:49:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-14 22:49:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 22:49:42,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:49:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:42,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:49:42,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:49:42,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:42,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:42,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:42,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:49:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:42,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:42,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:49:42,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:42,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 22:49:42,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:42,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:42,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:42,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:49:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:42,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:42,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:42,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:49:42,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:42,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:49:42,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:42,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:42,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:43,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:49:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:43,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:43,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:49:43,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:49:43,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:43,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:43,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:49:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:43,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:43,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:49:43,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:43,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:49:43,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:43,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:43,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:43,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:49:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:43,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:43,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:43,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:49:43,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:43,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:49:43,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:43,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:49:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:49:43,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:43,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:49:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:43,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:43,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:43,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 22:49:43,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 22:49:43,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:43,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:49:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:49:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 22:49:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:43,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-14 22:49:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:43,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:43,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 22:49:43,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:49:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 22:49:43,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:43,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:49:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:49:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 22:49:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:49:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 444 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-14 22:49:44,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809285591] [2020-10-14 22:49:44,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:49:44,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:49:44,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929873729] [2020-10-14 22:49:44,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:49:44,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:49:44,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:49:44,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:49:44,330 INFO L87 Difference]: Start difference. First operand 28598 states and 34064 transitions. Second operand 7 states. [2020-10-14 22:49:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:49:54,349 INFO L93 Difference]: Finished difference Result 66476 states and 79854 transitions. [2020-10-14 22:49:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:49:54,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1119 [2020-10-14 22:49:54,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:49:54,474 INFO L225 Difference]: With dead ends: 66476 [2020-10-14 22:49:54,475 INFO L226 Difference]: Without dead ends: 39296 [2020-10-14 22:49:54,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:49:54,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39296 states. [2020-10-14 22:49:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39296 to 36379. [2020-10-14 22:49:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36379 states. [2020-10-14 22:49:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36379 states to 36379 states and 42541 transitions. [2020-10-14 22:49:55,226 INFO L78 Accepts]: Start accepts. Automaton has 36379 states and 42541 transitions. Word has length 1119 [2020-10-14 22:49:55,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:49:55,227 INFO L479 AbstractCegarLoop]: Abstraction has 36379 states and 42541 transitions. [2020-10-14 22:49:55,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:49:55,227 INFO L276 IsEmpty]: Start isEmpty. Operand 36379 states and 42541 transitions. [2020-10-14 22:49:55,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2020-10-14 22:49:55,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:49:55,253 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:49:55,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:49:55,254 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:49:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:49:55,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1332268757, now seen corresponding path program 1 times [2020-10-14 22:49:55,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:49:55,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651835932] [2020-10-14 22:49:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:49:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:49:55,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:49:59,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:49:59,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1240 [2020-10-14 22:49:59,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:49:59,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4180 [2020-10-14 22:49:59,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:49:59,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:49:59,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:49:59,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-14 22:49:59,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 22:49:59,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:50:00,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:50:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:00,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:00,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:50:00,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:00,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:50:00,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:00,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:00,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:50:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:00,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:00,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:50:00,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 22:50:00,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:00,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:00,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:00,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:50:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:00,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:00,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:00,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:50:00,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:00,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:50:00,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:00,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:00,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:00,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:50:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:00,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:00,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:50:00,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:50:00,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:00,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:00,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:50:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:00,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:00,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:00,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:50:00,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:00,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:50:00,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:00,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:50:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:00,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:00,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:50:00,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:00,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:50:00,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:00,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:00,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:50:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:00,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:00,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 22:50:00,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 22:50:00,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:00,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:50:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 22:50:00,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:00,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-14 22:50:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:00,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:00,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:00,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:50:00,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:00,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:50:00,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:00,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:50:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:50:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:50:00,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1061 [2020-10-14 22:50:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:00,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:00,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:00,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 22:50:00,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:00,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 22:50:00,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:00,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-14 22:50:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:00,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1441 backedges. 431 proven. 75 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2020-10-14 22:50:01,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651835932] [2020-10-14 22:50:01,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:50:01,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:50:01,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138459753] [2020-10-14 22:50:01,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:50:01,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:50:01,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:50:01,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:50:01,594 INFO L87 Difference]: Start difference. First operand 36379 states and 42541 transitions. Second operand 7 states. [2020-10-14 22:50:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:50:18,642 INFO L93 Difference]: Finished difference Result 82118 states and 97217 transitions. [2020-10-14 22:50:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:50:18,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1216 [2020-10-14 22:50:18,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:50:18,770 INFO L225 Difference]: With dead ends: 82118 [2020-10-14 22:50:18,770 INFO L226 Difference]: Without dead ends: 47157 [2020-10-14 22:50:18,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:50:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47157 states. [2020-10-14 22:50:19,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47157 to 47115. [2020-10-14 22:50:19,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47115 states. [2020-10-14 22:50:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47115 states to 47115 states and 55130 transitions. [2020-10-14 22:50:19,504 INFO L78 Accepts]: Start accepts. Automaton has 47115 states and 55130 transitions. Word has length 1216 [2020-10-14 22:50:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:50:19,505 INFO L479 AbstractCegarLoop]: Abstraction has 47115 states and 55130 transitions. [2020-10-14 22:50:19,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:50:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 47115 states and 55130 transitions. [2020-10-14 22:50:19,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2020-10-14 22:50:19,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:50:19,529 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:50:19,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:50:19,529 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:50:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:50:19,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1099332955, now seen corresponding path program 1 times [2020-10-14 22:50:19,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:50:19,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739241035] [2020-10-14 22:50:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:50:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:19,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:23,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:23,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1254 [2020-10-14 22:50:23,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:50:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3930 [2020-10-14 22:50:23,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:23,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:50:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-14 22:50:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 22:50:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:50:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:23,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:23,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:23,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:50:23,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:23,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:50:23,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:23,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:23,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:50:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:23,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:23,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:50:23,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 22:50:23,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:23,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:23,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:24,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:50:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:24,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:24,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:50:24,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 22:50:24,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:24,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:24,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:50:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:24,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:24,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:24,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:50:24,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:24,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:50:24,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:24,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:50:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:24,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:24,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:50:24,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 22:50:24,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:24,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:24,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:50:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:24,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:24,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:50:24,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:24,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:50:24,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:24,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:24,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:24,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:50:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:24,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:24,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 22:50:24,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:24,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:50:24,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:24,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:50:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:50:24,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-14 22:50:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:24,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:24,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:50:24,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:50:24,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:24,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:50:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:50:24,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:24,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-14 22:50:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:24,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:24,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 22:50:24,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 22:50:24,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:24,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:50:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:50:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 22:50:24,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:50:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 581 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-14 22:50:26,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739241035] [2020-10-14 22:50:26,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:50:26,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:50:26,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046567240] [2020-10-14 22:50:26,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:50:26,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:50:26,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:50:26,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:50:26,862 INFO L87 Difference]: Start difference. First operand 47115 states and 55130 transitions. Second operand 7 states. [2020-10-14 22:50:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:50:40,782 INFO L93 Difference]: Finished difference Result 103502 states and 122439 transitions. [2020-10-14 22:50:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:50:40,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1230 [2020-10-14 22:50:40,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:50:40,969 INFO L225 Difference]: With dead ends: 103502 [2020-10-14 22:50:40,969 INFO L226 Difference]: Without dead ends: 57095 [2020-10-14 22:50:41,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:50:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57095 states. [2020-10-14 22:50:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57095 to 55663. [2020-10-14 22:50:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55663 states. [2020-10-14 22:50:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55663 states to 55663 states and 64756 transitions. [2020-10-14 22:50:42,342 INFO L78 Accepts]: Start accepts. Automaton has 55663 states and 64756 transitions. Word has length 1230 [2020-10-14 22:50:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:50:42,343 INFO L479 AbstractCegarLoop]: Abstraction has 55663 states and 64756 transitions. [2020-10-14 22:50:42,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:50:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 55663 states and 64756 transitions. [2020-10-14 22:50:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1253 [2020-10-14 22:50:42,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:50:42,367 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:50:42,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:50:42,367 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:50:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:50:42,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1591694057, now seen corresponding path program 1 times [2020-10-14 22:50:42,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:50:42,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491346267] [2020-10-14 22:50:42,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:50:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:42,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking...