/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:56:45,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:56:45,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:56:45,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:56:45,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:56:45,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:56:45,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:56:45,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:56:45,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:56:45,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:56:45,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:56:45,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:56:45,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:56:45,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:56:45,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:56:45,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:56:45,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:56:45,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:56:45,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:56:45,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:56:45,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:56:45,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:56:45,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:56:45,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:56:45,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:56:45,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:56:45,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:56:45,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:56:45,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:56:45,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:56:45,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:56:45,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:56:45,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:56:45,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:56:45,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:56:45,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:56:45,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:56:45,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:56:45,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:56:45,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:56:45,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:56:45,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:56:45,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:56:45,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:56:45,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:56:45,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:56:45,577 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:56:45,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:56:45,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:56:45,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:56:45,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:56:45,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:56:45,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:56:45,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:56:45,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:56:45,578 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:56:45,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:56:45,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:56:45,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:56:45,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:56:45,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:56:45,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:56:45,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:56:45,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:56:45,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:56:45,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:56:45,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:56:45,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:56:45,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:56:45,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:56:45,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:56:45,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:56:45,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:56:45,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:56:45,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:56:45,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:56:45,898 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:56:45,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label20.c [2020-10-14 21:56:45,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/276070b88/a7db926c26fe474bb07f19a93c7e3c46/FLAGd987e1d4a [2020-10-14 21:56:46,683 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:56:46,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label20.c [2020-10-14 21:56:46,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/276070b88/a7db926c26fe474bb07f19a93c7e3c46/FLAGd987e1d4a [2020-10-14 21:56:46,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/276070b88/a7db926c26fe474bb07f19a93c7e3c46 [2020-10-14 21:56:46,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:56:46,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:56:46,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:56:46,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:56:46,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:56:46,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:56:46" (1/1) ... [2020-10-14 21:56:46,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678b2c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:46, skipping insertion in model container [2020-10-14 21:56:46,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:56:46" (1/1) ... [2020-10-14 21:56:46,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:56:47,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:56:48,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:56:48,116 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:56:48,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:56:48,505 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:56:48,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:48 WrapperNode [2020-10-14 21:56:48,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:56:48,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:56:48,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:56:48,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:56:48,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:48" (1/1) ... [2020-10-14 21:56:48,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:48" (1/1) ... [2020-10-14 21:56:48,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:48" (1/1) ... [2020-10-14 21:56:48,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:48" (1/1) ... [2020-10-14 21:56:48,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:48" (1/1) ... [2020-10-14 21:56:48,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:48" (1/1) ... [2020-10-14 21:56:48,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:48" (1/1) ... [2020-10-14 21:56:48,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:56:48,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:56:48,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:56:48,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:56:48,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:56:48,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:56:48,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:56:48,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:56:48,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:56:48,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:56:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:56:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:56:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:56:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:56:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:56:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:56:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:56:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:56:57,361 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:56:57,362 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:56:57,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:56:57 BoogieIcfgContainer [2020-10-14 21:56:57,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:56:57,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:56:57,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:56:57,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:56:57,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:56:46" (1/3) ... [2020-10-14 21:56:57,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5519c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:56:57, skipping insertion in model container [2020-10-14 21:56:57,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:48" (2/3) ... [2020-10-14 21:56:57,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5519c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:56:57, skipping insertion in model container [2020-10-14 21:56:57,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:56:57" (3/3) ... [2020-10-14 21:56:57,389 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label20.c [2020-10-14 21:56:57,398 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:56:57,407 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:56:57,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:56:57,449 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:56:57,449 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:56:57,449 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:56:57,449 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:56:57,449 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:56:57,450 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:56:57,450 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:56:57,450 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:56:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:56:57,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 21:56:57,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:57,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:56:57,489 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:57,495 INFO L82 PathProgramCache]: Analyzing trace with hash 601102440, now seen corresponding path program 1 times [2020-10-14 21:56:57,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:57,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910222470] [2020-10-14 21:56:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:57,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:58,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:58,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 21:56:58,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-14 21:56:58,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:58,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:56:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:56:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 21:56:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:56:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:58,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:58,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:58,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:58,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:56:58,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:58,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:58,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:56:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:56:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:56:58,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910222470] [2020-10-14 21:56:58,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:56:58,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:56:58,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284991335] [2020-10-14 21:56:58,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:56:58,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:58,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:56:58,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:56:58,397 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:57:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:06,596 INFO L93 Difference]: Finished difference Result 1198 states and 2162 transitions. [2020-10-14 21:57:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:57:06,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-14 21:57:06,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:06,625 INFO L225 Difference]: With dead ends: 1198 [2020-10-14 21:57:06,625 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 21:57:06,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:57:06,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 21:57:06,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 688. [2020-10-14 21:57:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-14 21:57:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1008 transitions. [2020-10-14 21:57:06,757 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1008 transitions. Word has length 48 [2020-10-14 21:57:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:06,758 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1008 transitions. [2020-10-14 21:57:06,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:57:06,758 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1008 transitions. [2020-10-14 21:57:06,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 21:57:06,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:06,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:57:06,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:57:06,766 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:06,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:06,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1050219660, now seen corresponding path program 1 times [2020-10-14 21:57:06,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:06,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509972897] [2020-10-14 21:57:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:06,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:08,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:08,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:57:08,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:08,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1721 [2020-10-14 21:57:08,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:08,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:08,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:57:08,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:57:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:57:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:57:08,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:08,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:08,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:08,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:57:08,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:08,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:57:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:08,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:08,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:08,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:57:08,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:08,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 21:57:08,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:08,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:57:08,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 21:57:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:08,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509972897] [2020-10-14 21:57:08,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:57:08,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:57:08,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615030771] [2020-10-14 21:57:08,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:08,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:08,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:08,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:08,969 INFO L87 Difference]: Start difference. First operand 688 states and 1008 transitions. Second operand 7 states. [2020-10-14 21:57:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:15,981 INFO L93 Difference]: Finished difference Result 2033 states and 2989 transitions. [2020-10-14 21:57:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:57:15,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-14 21:57:15,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:15,994 INFO L225 Difference]: With dead ends: 2033 [2020-10-14 21:57:15,994 INFO L226 Difference]: Without dead ends: 1351 [2020-10-14 21:57:15,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:57:16,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-10-14 21:57:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1331. [2020-10-14 21:57:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-10-14 21:57:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1722 transitions. [2020-10-14 21:57:16,077 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1722 transitions. Word has length 117 [2020-10-14 21:57:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:16,079 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1722 transitions. [2020-10-14 21:57:16,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1722 transitions. [2020-10-14 21:57:16,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 21:57:16,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:16,094 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:57:16,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:57:16,095 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:16,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:16,095 INFO L82 PathProgramCache]: Analyzing trace with hash -792468662, now seen corresponding path program 1 times [2020-10-14 21:57:16,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:16,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594542043] [2020-10-14 21:57:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:16,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:16,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:16,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 21:57:16,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:16,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 21:57:16,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:16,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:57:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 21:57:16,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:57:16,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:16,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:16,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:16,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:16,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:16,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:57:16,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:16,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:16,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:16,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:16,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:16,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:16,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:57:16,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:16,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 21:57:16,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:16,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:57:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:17,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594542043] [2020-10-14 21:57:17,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:17,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:57:17,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471982839] [2020-10-14 21:57:17,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:57:17,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:17,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:57:17,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:57:17,090 INFO L87 Difference]: Start difference. First operand 1331 states and 1722 transitions. Second operand 5 states. [2020-10-14 21:57:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:25,334 INFO L93 Difference]: Finished difference Result 2089 states and 2805 transitions. [2020-10-14 21:57:25,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:57:25,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-14 21:57:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:25,350 INFO L225 Difference]: With dead ends: 2089 [2020-10-14 21:57:25,350 INFO L226 Difference]: Without dead ends: 1338 [2020-10-14 21:57:25,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:57:25,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-10-14 21:57:25,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1331. [2020-10-14 21:57:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-10-14 21:57:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1709 transitions. [2020-10-14 21:57:25,396 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1709 transitions. Word has length 143 [2020-10-14 21:57:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:25,396 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1709 transitions. [2020-10-14 21:57:25,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:57:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1709 transitions. [2020-10-14 21:57:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 21:57:25,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:25,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:57:25,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:57:25,400 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:25,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:25,400 INFO L82 PathProgramCache]: Analyzing trace with hash -2087910153, now seen corresponding path program 1 times [2020-10-14 21:57:25,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:25,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615744919] [2020-10-14 21:57:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:25,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:25,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:26,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:27,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:27,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 21:57:27,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:57:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1662 [2020-10-14 21:57:27,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:27,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:57:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:57:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 21:57:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:57:27,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:27,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:27,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:27,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:57:27,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:27,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:57:27,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:27,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:27,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:27,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 21:57:27,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-14 21:57:27,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:27,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 21:57:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:28,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615744919] [2020-10-14 21:57:28,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:57:28,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:57:28,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916033130] [2020-10-14 21:57:28,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:57:28,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:28,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:57:28,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:57:28,215 INFO L87 Difference]: Start difference. First operand 1331 states and 1709 transitions. Second operand 8 states. [2020-10-14 21:57:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:39,084 INFO L93 Difference]: Finished difference Result 2392 states and 3142 transitions. [2020-10-14 21:57:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:57:39,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-10-14 21:57:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:39,096 INFO L225 Difference]: With dead ends: 2392 [2020-10-14 21:57:39,096 INFO L226 Difference]: Without dead ends: 1374 [2020-10-14 21:57:39,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:57:39,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-10-14 21:57:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1333. [2020-10-14 21:57:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-10-14 21:57:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1706 transitions. [2020-10-14 21:57:39,139 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1706 transitions. Word has length 210 [2020-10-14 21:57:39,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:39,141 INFO L479 AbstractCegarLoop]: Abstraction has 1333 states and 1706 transitions. [2020-10-14 21:57:39,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:57:39,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1706 transitions. [2020-10-14 21:57:39,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 21:57:39,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:39,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:57:39,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:57:39,145 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:39,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:39,145 INFO L82 PathProgramCache]: Analyzing trace with hash -560405773, now seen corresponding path program 1 times [2020-10-14 21:57:39,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:39,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279341021] [2020-10-14 21:57:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:40,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:40,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 21:57:40,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-10-14 21:57:40,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:40,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-14 21:57:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 21:57:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:40,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:40,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:40,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:40,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:57:40,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:40,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:40,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:40,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:40,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 21:57:40,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:40,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 21:57:40,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:40,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 21:57:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:57:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:40,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279341021] [2020-10-14 21:57:40,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:40,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:57:40,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108548981] [2020-10-14 21:57:40,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:57:40,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:40,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:57:40,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:57:40,572 INFO L87 Difference]: Start difference. First operand 1333 states and 1706 transitions. Second operand 5 states. [2020-10-14 21:57:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:49,641 INFO L93 Difference]: Finished difference Result 2693 states and 3704 transitions. [2020-10-14 21:57:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:57:49,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-14 21:57:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:49,651 INFO L225 Difference]: With dead ends: 2693 [2020-10-14 21:57:49,651 INFO L226 Difference]: Without dead ends: 1984 [2020-10-14 21:57:49,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:57:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-10-14 21:57:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1979. [2020-10-14 21:57:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1979 states. [2020-10-14 21:57:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 2448 transitions. [2020-10-14 21:57:49,699 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 2448 transitions. Word has length 228 [2020-10-14 21:57:49,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:49,700 INFO L479 AbstractCegarLoop]: Abstraction has 1979 states and 2448 transitions. [2020-10-14 21:57:49,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:57:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 2448 transitions. [2020-10-14 21:57:49,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-14 21:57:49,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:49,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:57:49,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:57:49,705 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:49,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2082019485, now seen corresponding path program 1 times [2020-10-14 21:57:49,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:49,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901135829] [2020-10-14 21:57:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:49,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:50,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:51,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:51,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 21:57:51,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-10-14 21:57:51,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:51,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 21:57:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:57:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-14 21:57:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:51,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:51,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:51,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:51,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:57:51,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:51,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:51,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:51,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:51,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:57:51,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:51,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:51,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 21:57:52,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-14 21:57:52,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:57:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 21:57:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:52,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901135829] [2020-10-14 21:57:52,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:52,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:52,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902112564] [2020-10-14 21:57:52,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:57:52,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:52,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:57:52,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:57:52,787 INFO L87 Difference]: Start difference. First operand 1979 states and 2448 transitions. Second operand 8 states. [2020-10-14 21:58:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:05,342 INFO L93 Difference]: Finished difference Result 4052 states and 5268 transitions. [2020-10-14 21:58:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:58:05,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 285 [2020-10-14 21:58:05,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:05,363 INFO L225 Difference]: With dead ends: 4052 [2020-10-14 21:58:05,363 INFO L226 Difference]: Without dead ends: 2656 [2020-10-14 21:58:05,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2020-10-14 21:58:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2630. [2020-10-14 21:58:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2630 states. [2020-10-14 21:58:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3415 transitions. [2020-10-14 21:58:05,461 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3415 transitions. Word has length 285 [2020-10-14 21:58:05,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:05,462 INFO L479 AbstractCegarLoop]: Abstraction has 2630 states and 3415 transitions. [2020-10-14 21:58:05,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:58:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3415 transitions. [2020-10-14 21:58:05,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-14 21:58:05,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:05,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:58:05,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:58:05,468 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:05,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:05,468 INFO L82 PathProgramCache]: Analyzing trace with hash 753913646, now seen corresponding path program 1 times [2020-10-14 21:58:05,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:05,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207851740] [2020-10-14 21:58:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:05,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:05,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:05,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:07,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:08,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:08,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-14 21:58:08,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:58:08,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2977 [2020-10-14 21:58:08,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:08,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:58:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:58:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-14 21:58:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:08,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:08,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:08,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:58:08,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:08,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:58:08,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:58:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:08,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:08,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:08,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 21:58:08,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:08,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 21:58:08,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:08,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 21:58:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:08,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-14 21:58:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:09,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:09,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:09,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:58:09,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:09,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 21:58:09,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:09,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:09,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:09,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:09,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 21:58:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 21:58:09,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207851740] [2020-10-14 21:58:09,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:09,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:58:09,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554454679] [2020-10-14 21:58:09,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:09,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:09,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:09,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:09,317 INFO L87 Difference]: Start difference. First operand 2630 states and 3415 transitions. Second operand 7 states. [2020-10-14 21:58:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:19,271 INFO L93 Difference]: Finished difference Result 5676 states and 7581 transitions. [2020-10-14 21:58:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:58:19,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-14 21:58:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:19,297 INFO L225 Difference]: With dead ends: 5676 [2020-10-14 21:58:19,297 INFO L226 Difference]: Without dead ends: 3354 [2020-10-14 21:58:19,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:58:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2020-10-14 21:58:19,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3266. [2020-10-14 21:58:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3266 states. [2020-10-14 21:58:19,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 4082 transitions. [2020-10-14 21:58:19,400 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 4082 transitions. Word has length 300 [2020-10-14 21:58:19,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:19,401 INFO L479 AbstractCegarLoop]: Abstraction has 3266 states and 4082 transitions. [2020-10-14 21:58:19,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 4082 transitions. [2020-10-14 21:58:19,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-14 21:58:19,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:19,410 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-14 21:58:19,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:58:19,410 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:19,411 INFO L82 PathProgramCache]: Analyzing trace with hash -586218407, now seen corresponding path program 1 times [2020-10-14 21:58:19,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:19,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625811196] [2020-10-14 21:58:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:19,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:21,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:21,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-14 21:58:21,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:58:21,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2196 [2020-10-14 21:58:21,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:21,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:58:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:58:21,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:21,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:21,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:21,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:21,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:21,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:58:21,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:21,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:21,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:22,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:22,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:22,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:58:22,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:22,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 21:58:22,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:22,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:58:22,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:22,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:58:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:58:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 21:58:22,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:22,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:58:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:58:22,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625811196] [2020-10-14 21:58:22,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:22,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:22,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305711290] [2020-10-14 21:58:22,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:22,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:22,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:22,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:22,876 INFO L87 Difference]: Start difference. First operand 3266 states and 4082 transitions. Second operand 7 states. [2020-10-14 21:58:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:36,428 INFO L93 Difference]: Finished difference Result 8834 states and 11376 transitions. [2020-10-14 21:58:36,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:58:36,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-14 21:58:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:36,454 INFO L225 Difference]: With dead ends: 8834 [2020-10-14 21:58:36,454 INFO L226 Difference]: Without dead ends: 5881 [2020-10-14 21:58:36,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:58:36,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2020-10-14 21:58:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5800. [2020-10-14 21:58:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5800 states. [2020-10-14 21:58:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5800 states to 5800 states and 6912 transitions. [2020-10-14 21:58:36,605 INFO L78 Accepts]: Start accepts. Automaton has 5800 states and 6912 transitions. Word has length 391 [2020-10-14 21:58:36,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:36,606 INFO L479 AbstractCegarLoop]: Abstraction has 5800 states and 6912 transitions. [2020-10-14 21:58:36,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5800 states and 6912 transitions. [2020-10-14 21:58:36,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-14 21:58:36,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:36,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-14 21:58:36,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:58:36,615 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:36,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:36,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1641778927, now seen corresponding path program 1 times [2020-10-14 21:58:36,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:36,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355025423] [2020-10-14 21:58:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:36,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:38,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:38,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-14 21:58:38,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:58:38,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1896 [2020-10-14 21:58:38,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:38,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:58:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 21:58:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:58:38,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:38,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:38,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:38,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:38,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:38,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:38,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:38,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:39,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:39,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:39,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:39,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 21:58:39,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:39,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:58:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:39,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:58:39,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 21:58:39,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:39,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:58:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:58:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 116 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:58:39,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355025423] [2020-10-14 21:58:39,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:39,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:58:39,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188296819] [2020-10-14 21:58:39,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:58:39,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:39,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:58:39,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:58:39,503 INFO L87 Difference]: Start difference. First operand 5800 states and 6912 transitions. Second operand 8 states. [2020-10-14 21:58:59,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:59,816 INFO L93 Difference]: Finished difference Result 13259 states and 16564 transitions. [2020-10-14 21:58:59,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:58:59,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 403 [2020-10-14 21:58:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:59,858 INFO L225 Difference]: With dead ends: 13259 [2020-10-14 21:58:59,859 INFO L226 Difference]: Without dead ends: 8117 [2020-10-14 21:58:59,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:58:59,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8117 states. [2020-10-14 21:59:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8117 to 7719. [2020-10-14 21:59:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7719 states. [2020-10-14 21:59:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7719 states to 7719 states and 9480 transitions. [2020-10-14 21:59:00,089 INFO L78 Accepts]: Start accepts. Automaton has 7719 states and 9480 transitions. Word has length 403 [2020-10-14 21:59:00,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:00,145 INFO L479 AbstractCegarLoop]: Abstraction has 7719 states and 9480 transitions. [2020-10-14 21:59:00,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:59:00,145 INFO L276 IsEmpty]: Start isEmpty. Operand 7719 states and 9480 transitions. [2020-10-14 21:59:00,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-14 21:59:00,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:00,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:59:00,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:59:00,153 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:00,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1985041170, now seen corresponding path program 1 times [2020-10-14 21:59:00,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:00,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544017581] [2020-10-14 21:59:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:00,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:02,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:02,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-14 21:59:02,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:59:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2378 [2020-10-14 21:59:02,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:02,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 21:59:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:59:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:02,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:02,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:02,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:02,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:02,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:59:02,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:02,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:02,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:02,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:03,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:03,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:59:03,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:03,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 21:59:03,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:03,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:59:03,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:03,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:59:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:03,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:03,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:03,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:59:03,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 21:59:03,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:03,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:59:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:59:03,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544017581] [2020-10-14 21:59:03,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:59:03,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:59:03,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331951518] [2020-10-14 21:59:03,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:59:03,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:59:03,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:59:03,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:59:03,588 INFO L87 Difference]: Start difference. First operand 7719 states and 9480 transitions. Second operand 8 states. [2020-10-14 21:59:23,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:23,151 INFO L93 Difference]: Finished difference Result 20887 states and 27990 transitions. [2020-10-14 21:59:23,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:59:23,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 414 [2020-10-14 21:59:23,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:23,222 INFO L225 Difference]: With dead ends: 20887 [2020-10-14 21:59:23,222 INFO L226 Difference]: Without dead ends: 13481 [2020-10-14 21:59:23,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:59:23,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2020-10-14 21:59:23,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 13410. [2020-10-14 21:59:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13410 states. [2020-10-14 21:59:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13410 states to 13410 states and 17101 transitions. [2020-10-14 21:59:23,653 INFO L78 Accepts]: Start accepts. Automaton has 13410 states and 17101 transitions. Word has length 414 [2020-10-14 21:59:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:23,654 INFO L479 AbstractCegarLoop]: Abstraction has 13410 states and 17101 transitions. [2020-10-14 21:59:23,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:59:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 13410 states and 17101 transitions. [2020-10-14 21:59:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-14 21:59:23,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:23,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:59:23,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:59:23,663 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:23,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1648317672, now seen corresponding path program 1 times [2020-10-14 21:59:23,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:23,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49379355] [2020-10-14 21:59:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:24,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:24,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-14 21:59:24,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:24,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-14 21:59:24,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:24,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:24,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:24,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:59:24,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 21:59:24,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:59:25,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:25,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:25,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:25,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:59:25,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:25,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:59:25,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:25,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:25,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:25,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:59:25,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:25,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 21:59:25,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:25,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:59:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:25,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:25,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:59:25,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 21:59:25,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:25,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:59:25,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:59:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 21:59:25,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49379355] [2020-10-14 21:59:25,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:59:25,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:59:25,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719361484] [2020-10-14 21:59:25,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:59:25,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:59:25,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:59:25,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:59:25,688 INFO L87 Difference]: Start difference. First operand 13410 states and 17101 transitions. Second operand 5 states. [2020-10-14 21:59:36,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:36,525 INFO L93 Difference]: Finished difference Result 26516 states and 33951 transitions. [2020-10-14 21:59:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:59:36,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 445 [2020-10-14 21:59:36,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:36,588 INFO L225 Difference]: With dead ends: 26516 [2020-10-14 21:59:36,588 INFO L226 Difference]: Without dead ends: 13419 [2020-10-14 21:59:36,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:59:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13419 states. [2020-10-14 21:59:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13419 to 13099. [2020-10-14 21:59:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13099 states. [2020-10-14 21:59:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13099 states to 13099 states and 16202 transitions. [2020-10-14 21:59:36,963 INFO L78 Accepts]: Start accepts. Automaton has 13099 states and 16202 transitions. Word has length 445 [2020-10-14 21:59:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:36,964 INFO L479 AbstractCegarLoop]: Abstraction has 13099 states and 16202 transitions. [2020-10-14 21:59:36,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:59:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 13099 states and 16202 transitions. [2020-10-14 21:59:36,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-14 21:59:36,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:36,972 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:59:36,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:59:36,973 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:36,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1982272878, now seen corresponding path program 1 times [2020-10-14 21:59:36,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:36,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869366137] [2020-10-14 21:59:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:37,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:38,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:38,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-14 21:59:38,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:59:38,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1850 [2020-10-14 21:59:38,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:38,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:38,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:59:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:59:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 480 [2020-10-14 21:59:38,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:39,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:39,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:39,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:39,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:59:39,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:39,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:59:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:39,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:39,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:39,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:39,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:59:39,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:39,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 21:59:39,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:39,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-14 21:59:39,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:39,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:59:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:39,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:39,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:59:39,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:39,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 21:59:39,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:39,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:59:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 21:59:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:40,473 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-10-14 21:59:40,645 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-10-14 21:59:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 14 proven. 211 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:59:41,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869366137] [2020-10-14 21:59:41,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:59:41,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:59:41,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901080327] [2020-10-14 21:59:41,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:59:41,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:59:41,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:59:41,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:59:41,935 INFO L87 Difference]: Start difference. First operand 13099 states and 16202 transitions. Second operand 10 states. [2020-10-14 21:59:44,778 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-14 21:59:46,081 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-14 21:59:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:56,651 INFO L93 Difference]: Finished difference Result 24262 states and 30564 transitions. [2020-10-14 21:59:56,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:59:56,654 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 481 [2020-10-14 21:59:56,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:56,690 INFO L225 Difference]: With dead ends: 24262 [2020-10-14 21:59:56,691 INFO L226 Difference]: Without dead ends: 13211 [2020-10-14 21:59:56,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:59:56,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13211 states. [2020-10-14 21:59:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13211 to 13131. [2020-10-14 21:59:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13131 states. [2020-10-14 21:59:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13131 states to 13131 states and 16209 transitions. [2020-10-14 21:59:57,011 INFO L78 Accepts]: Start accepts. Automaton has 13131 states and 16209 transitions. Word has length 481 [2020-10-14 21:59:57,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:57,013 INFO L479 AbstractCegarLoop]: Abstraction has 13131 states and 16209 transitions. [2020-10-14 21:59:57,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:59:57,013 INFO L276 IsEmpty]: Start isEmpty. Operand 13131 states and 16209 transitions. [2020-10-14 21:59:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-14 21:59:57,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:57,022 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:59:57,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:59:57,023 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:57,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:57,024 INFO L82 PathProgramCache]: Analyzing trace with hash 702785548, now seen corresponding path program 1 times [2020-10-14 21:59:57,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:57,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935074023] [2020-10-14 21:59:57,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:57,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:59,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:59,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 528 [2020-10-14 21:59:59,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:59:59,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2435 [2020-10-14 21:59:59,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:59,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:59:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:59:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 21:59:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:59,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:59,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:59,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:59,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:59,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:59:59,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:59,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:59,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:59,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:59:59,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 21:59:59,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:59,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:59,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:59:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:59,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:00,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:00:00,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:00,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 22:00:00,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:00,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:00:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:00:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:00:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:00,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:00,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:00:00,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:00:00,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:00:00,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:00,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:00,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:00:00,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:00:00,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:00:00,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 216 proven. 42 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 22:00:00,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935074023] [2020-10-14 22:00:00,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:00:00,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:00:00,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700303367] [2020-10-14 22:00:00,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:00:00,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:00:00,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:00:00,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:00:00,410 INFO L87 Difference]: Start difference. First operand 13131 states and 16209 transitions. Second operand 6 states. [2020-10-14 22:00:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:00:16,415 INFO L93 Difference]: Finished difference Result 26468 states and 34197 transitions. [2020-10-14 22:00:16,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:00:16,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 514 [2020-10-14 22:00:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:00:16,467 INFO L225 Difference]: With dead ends: 26468 [2020-10-14 22:00:16,467 INFO L226 Difference]: Without dead ends: 17998 [2020-10-14 22:00:16,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:00:16,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17998 states. [2020-10-14 22:00:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17998 to 17666. [2020-10-14 22:00:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17666 states. [2020-10-14 22:00:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17666 states to 17666 states and 22229 transitions. [2020-10-14 22:00:16,869 INFO L78 Accepts]: Start accepts. Automaton has 17666 states and 22229 transitions. Word has length 514 [2020-10-14 22:00:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:00:16,870 INFO L479 AbstractCegarLoop]: Abstraction has 17666 states and 22229 transitions. [2020-10-14 22:00:16,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:00:16,871 INFO L276 IsEmpty]: Start isEmpty. Operand 17666 states and 22229 transitions. [2020-10-14 22:00:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-14 22:00:16,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:00:16,877 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:16,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:00:16,878 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:00:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:00:16,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1314018281, now seen corresponding path program 1 times [2020-10-14 22:00:16,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:00:16,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637654057] [2020-10-14 22:00:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:00:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:17,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:17,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:18,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:18,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-14 22:00:18,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:00:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1791 [2020-10-14 22:00:18,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:18,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:00:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:00:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 22:00:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:00:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:19,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:19,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:19,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:00:19,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:00:19,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:19,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:00:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:00:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:00:19,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:00:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:19,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:19,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:00:19,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:19,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 22:00:19,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:19,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:19,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:00:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:00:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:00:19,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:00:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:19,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:19,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:19,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:00:19,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 22:00:19,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:19,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:00:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:00:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:19,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:00:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:19,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:19,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:19,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 22:00:19,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:19,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 22:00:19,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:19,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:19,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:00:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:00:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:00:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:00:20,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637654057] [2020-10-14 22:00:20,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:00:20,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:00:20,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406819377] [2020-10-14 22:00:20,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:00:20,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:00:20,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:00:20,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:00:20,179 INFO L87 Difference]: Start difference. First operand 17666 states and 22229 transitions. Second operand 7 states. [2020-10-14 22:00:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:00:37,461 INFO L93 Difference]: Finished difference Result 39211 states and 51337 transitions. [2020-10-14 22:00:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:00:37,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 546 [2020-10-14 22:00:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:00:37,521 INFO L225 Difference]: With dead ends: 39211 [2020-10-14 22:00:37,522 INFO L226 Difference]: Without dead ends: 23716 [2020-10-14 22:00:37,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:00:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23716 states. [2020-10-14 22:00:38,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23716 to 23042. [2020-10-14 22:00:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23042 states. [2020-10-14 22:00:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23042 states to 23042 states and 29262 transitions. [2020-10-14 22:00:38,064 INFO L78 Accepts]: Start accepts. Automaton has 23042 states and 29262 transitions. Word has length 546 [2020-10-14 22:00:38,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:00:38,065 INFO L479 AbstractCegarLoop]: Abstraction has 23042 states and 29262 transitions. [2020-10-14 22:00:38,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:00:38,065 INFO L276 IsEmpty]: Start isEmpty. Operand 23042 states and 29262 transitions. [2020-10-14 22:00:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-14 22:00:38,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:00:38,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:38,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 22:00:38,074 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:00:38,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:00:38,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1310317188, now seen corresponding path program 1 times [2020-10-14 22:00:38,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:00:38,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680748459] [2020-10-14 22:00:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:00:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking...