/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_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:01:23,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:01:23,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:01:23,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:01:23,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:01:23,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:01:23,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:01:23,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:01:23,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:01:23,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:01:23,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:01:23,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:01:23,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:01:23,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:01:23,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:01:23,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:01:23,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:01:23,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:01:23,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:01:23,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:01:23,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:01:23,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:01:23,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:01:23,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:01:23,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:01:23,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:01:23,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:01:23,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:01:23,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:01:23,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:01:23,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:01:23,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:01:23,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:01:23,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:01:23,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:01:23,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:01:23,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:01:23,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:01:23,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:01:23,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:01:23,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:01:23,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:01:23,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:01:23,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:01:23,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:01:23,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:01:23,401 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:01:23,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:01:23,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:01:23,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:01:23,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:01:23,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:01:23,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:01:23,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:01:23,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:01:23,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:01:23,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:01:23,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:01:23,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:01:23,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:01:23,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:01:23,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:01:23,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:01:23,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:01:23,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:01:23,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:01:23,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:01:23,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:01:23,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:01:23,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:01:23,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:01:23,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:01:23,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:01:23,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:01:23,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:01:23,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:01:23,764 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:01:23,765 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label38.c [2020-10-14 22:01:23,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/678fbcff5/e43277c05ca54c4b996677ccda0742e3/FLAG88d4c855a [2020-10-14 22:01:24,706 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:01:24,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label38.c [2020-10-14 22:01:24,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/678fbcff5/e43277c05ca54c4b996677ccda0742e3/FLAG88d4c855a [2020-10-14 22:01:24,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/678fbcff5/e43277c05ca54c4b996677ccda0742e3 [2020-10-14 22:01:24,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:01:24,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:01:24,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:01:24,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:01:24,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:01:24,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:01:24" (1/1) ... [2020-10-14 22:01:24,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629d3d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:24, skipping insertion in model container [2020-10-14 22:01:24,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:01:24" (1/1) ... [2020-10-14 22:01:24,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:01:24,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:01:26,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:01:26,247 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:01:26,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:01:26,566 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:01:26,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:26 WrapperNode [2020-10-14 22:01:26,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:01:26,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:01:26,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:01:26,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:01:26,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:26" (1/1) ... [2020-10-14 22:01:26,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:26" (1/1) ... [2020-10-14 22:01:26,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:26" (1/1) ... [2020-10-14 22:01:26,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:26" (1/1) ... [2020-10-14 22:01:26,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:26" (1/1) ... [2020-10-14 22:01:26,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:26" (1/1) ... [2020-10-14 22:01:26,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:26" (1/1) ... [2020-10-14 22:01:26,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:01:26,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:01:26,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:01:26,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:01:26,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:01:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:01:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:01:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:01:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:01:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:01:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:01:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:01:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:01:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:01:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:01:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:01:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:01:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:01:33,317 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:01:33,317 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:01:33,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:01:33 BoogieIcfgContainer [2020-10-14 22:01:33,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:01:33,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:01:33,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:01:33,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:01:33,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:01:24" (1/3) ... [2020-10-14 22:01:33,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17dcbd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:01:33, skipping insertion in model container [2020-10-14 22:01:33,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:26" (2/3) ... [2020-10-14 22:01:33,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17dcbd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:01:33, skipping insertion in model container [2020-10-14 22:01:33,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:01:33" (3/3) ... [2020-10-14 22:01:33,347 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label38.c [2020-10-14 22:01:33,362 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:01:33,378 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:01:33,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:01:33,442 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:01:33,442 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:01:33,442 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:01:33,443 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:01:33,443 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:01:33,443 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:01:33,443 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:01:33,444 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:01:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 22:01:33,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 22:01:33,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:01:33,504 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] [2020-10-14 22:01:33,505 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:01:33,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:01:33,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1592859528, now seen corresponding path program 1 times [2020-10-14 22:01:33,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:01:33,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788085668] [2020-10-14 22:01:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:34,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:34,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 22:01:34,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:34,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-14 22:01:34,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:34,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:01:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:01:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 22:01:34,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 22:01:34,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:01:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:34,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:34,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:34,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:01:34,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:01:34,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:34,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:01:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:01:34,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788085668] [2020-10-14 22:01:34,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:01:34,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:01:34,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538244147] [2020-10-14 22:01:34,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:01:34,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:01:34,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:01:34,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:01:34,293 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2020-10-14 22:01:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:01:44,637 INFO L93 Difference]: Finished difference Result 1517 states and 2786 transitions. [2020-10-14 22:01:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:01:44,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-14 22:01:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:01:44,668 INFO L225 Difference]: With dead ends: 1517 [2020-10-14 22:01:44,668 INFO L226 Difference]: Without dead ends: 1010 [2020-10-14 22:01:44,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:01:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-14 22:01:44,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1000. [2020-10-14 22:01:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-14 22:01:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1379 transitions. [2020-10-14 22:01:44,809 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1379 transitions. Word has length 36 [2020-10-14 22:01:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:01:44,809 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1379 transitions. [2020-10-14 22:01:44,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:01:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1379 transitions. [2020-10-14 22:01:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 22:01:44,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:01:44,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:44,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:01:44,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:01:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:01:44,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2073458140, now seen corresponding path program 1 times [2020-10-14 22:01:44,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:01:44,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122039787] [2020-10-14 22:01:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:44,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:46,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:46,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 22:01:46,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:01:46,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-14 22:01:46,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:46,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:01:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:01:46,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:01:46,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:01:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:01:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:46,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:46,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:01:46,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:01:46,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:46,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:01:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:46,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:01:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:46,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:46,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:01:46,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:46,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 22:01:46,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:46,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:46,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:01:46,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:01:46,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:01:46,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 22:01:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:01:46,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122039787] [2020-10-14 22:01:46,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:01:46,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:01:46,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32867005] [2020-10-14 22:01:46,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:01:46,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:01:46,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:01:46,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:01:46,656 INFO L87 Difference]: Start difference. First operand 1000 states and 1379 transitions. Second operand 7 states. [2020-10-14 22:01:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:01:54,722 INFO L93 Difference]: Finished difference Result 2334 states and 3158 transitions. [2020-10-14 22:01:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:01:54,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-14 22:01:54,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:01:54,730 INFO L225 Difference]: With dead ends: 2334 [2020-10-14 22:01:54,730 INFO L226 Difference]: Without dead ends: 1340 [2020-10-14 22:01:54,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:01:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2020-10-14 22:01:54,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1323. [2020-10-14 22:01:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-10-14 22:01:54,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1734 transitions. [2020-10-14 22:01:54,781 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1734 transitions. Word has length 105 [2020-10-14 22:01:54,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:01:54,782 INFO L479 AbstractCegarLoop]: Abstraction has 1323 states and 1734 transitions. [2020-10-14 22:01:54,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:01:54,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1734 transitions. [2020-10-14 22:01:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 22:01:54,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:01:54,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:54,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:01:54,787 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:01:54,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:01:54,788 INFO L82 PathProgramCache]: Analyzing trace with hash 285685935, now seen corresponding path program 1 times [2020-10-14 22:01:54,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:01:54,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063264164] [2020-10-14 22:01:54,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:54,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:55,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:55,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:55,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 22:01:55,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:01:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-14 22:01:55,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:55,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:01:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:01:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:01:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:55,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:01:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:55,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:55,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:01:55,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:55,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:01:55,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:55,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:55,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:01:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:01:55,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:01:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:55,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:55,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:01:55,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:55,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:01:55,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:55,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:55,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:01:55,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:01:55,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:01:55,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:01:55,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063264164] [2020-10-14 22:01:55,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:01:55,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:01:55,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280538522] [2020-10-14 22:01:55,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:01:55,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:01:55,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:01:55,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:01:55,915 INFO L87 Difference]: Start difference. First operand 1323 states and 1734 transitions. Second operand 7 states. [2020-10-14 22:02:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:04,480 INFO L93 Difference]: Finished difference Result 3001 states and 4117 transitions. [2020-10-14 22:02:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:02:04,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-14 22:02:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:04,491 INFO L225 Difference]: With dead ends: 3001 [2020-10-14 22:02:04,492 INFO L226 Difference]: Without dead ends: 1991 [2020-10-14 22:02:04,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:02:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2020-10-14 22:02:04,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1950. [2020-10-14 22:02:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-10-14 22:02:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2414 transitions. [2020-10-14 22:02:04,553 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2414 transitions. Word has length 110 [2020-10-14 22:02:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:04,554 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2414 transitions. [2020-10-14 22:02:04,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:04,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2414 transitions. [2020-10-14 22:02:04,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 22:02:04,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:04,559 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:02:04,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:02:04,560 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:04,560 INFO L82 PathProgramCache]: Analyzing trace with hash 994470943, now seen corresponding path program 1 times [2020-10-14 22:02:04,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:04,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794025872] [2020-10-14 22:02:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:04,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:08,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:08,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 22:02:08,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:02:08,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4190 [2020-10-14 22:02:08,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:08,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:02:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 22:02:08,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:08,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:08,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:08,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:08,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:02:08,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:08,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:09,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:09,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:09,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:02:09,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:09,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 22:02:09,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:09,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:02:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:09,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:02:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:09,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:09,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:02:09,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:09,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 22:02:09,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:09,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:09,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:09,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:02:09,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:02:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 22:02:09,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794025872] [2020-10-14 22:02:09,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:09,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:02:09,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612946354] [2020-10-14 22:02:09,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:02:09,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:09,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:02:09,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:02:09,454 INFO L87 Difference]: Start difference. First operand 1950 states and 2414 transitions. Second operand 7 states. [2020-10-14 22:02:16,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:16,482 INFO L93 Difference]: Finished difference Result 4295 states and 5560 transitions. [2020-10-14 22:02:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:02:16,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-10-14 22:02:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:16,500 INFO L225 Difference]: With dead ends: 4295 [2020-10-14 22:02:16,501 INFO L226 Difference]: Without dead ends: 2969 [2020-10-14 22:02:16,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:02:16,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-10-14 22:02:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2285. [2020-10-14 22:02:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2285 states. [2020-10-14 22:02:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 2810 transitions. [2020-10-14 22:02:16,571 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 2810 transitions. Word has length 210 [2020-10-14 22:02:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:16,572 INFO L479 AbstractCegarLoop]: Abstraction has 2285 states and 2810 transitions. [2020-10-14 22:02:16,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 2810 transitions. [2020-10-14 22:02:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 22:02:16,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:16,579 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:02:16,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:02:16,580 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2120882815, now seen corresponding path program 1 times [2020-10-14 22:02:16,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:16,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816783330] [2020-10-14 22:02:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:16,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:16,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:21,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:21,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-14 22:02:21,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:02:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 22:02:21,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:21,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:02:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 22:02:21,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:21,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:21,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:21,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:21,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:02:21,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:21,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:21,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:21,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:02:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-14 22:02:22,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:22,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:02:22,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:22,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:02:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:22,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:22,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:02:22,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:22,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 22:02:22,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:22,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 22:02:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 58 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:02:22,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816783330] [2020-10-14 22:02:22,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:22,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:02:22,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483830062] [2020-10-14 22:02:22,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:02:22,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:22,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:02:22,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:02:22,987 INFO L87 Difference]: Start difference. First operand 2285 states and 2810 transitions. Second operand 7 states. [2020-10-14 22:02:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:30,570 INFO L93 Difference]: Finished difference Result 4984 states and 6184 transitions. [2020-10-14 22:02:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:02:30,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-14 22:02:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:30,589 INFO L225 Difference]: With dead ends: 4984 [2020-10-14 22:02:30,589 INFO L226 Difference]: Without dead ends: 2705 [2020-10-14 22:02:30,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:02:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2020-10-14 22:02:30,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2596. [2020-10-14 22:02:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2596 states. [2020-10-14 22:02:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3133 transitions. [2020-10-14 22:02:30,679 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3133 transitions. Word has length 316 [2020-10-14 22:02:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:30,680 INFO L479 AbstractCegarLoop]: Abstraction has 2596 states and 3133 transitions. [2020-10-14 22:02:30,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3133 transitions. [2020-10-14 22:02:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-14 22:02:30,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:30,686 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:02:30,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:02:30,687 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:30,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:30,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1107105334, now seen corresponding path program 1 times [2020-10-14 22:02:30,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:30,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160747302] [2020-10-14 22:02:30,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:31,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:31,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:33,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:34,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:34,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-14 22:02:34,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:02:34,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4141 [2020-10-14 22:02:34,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:34,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:02:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-14 22:02:34,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:35,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:35,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:35,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:02:35,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:35,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:35,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:35,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:35,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:35,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:35,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:02:35,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:02:35,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 22:02:35,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:35,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:02:35,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:02:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:35,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:36,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:36,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:02:36,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:02:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-14 22:02:36,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:36,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 22:02:36,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 22:02:36,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160747302] [2020-10-14 22:02:36,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:36,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:02:36,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568722235] [2020-10-14 22:02:36,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:02:36,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:02:36,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:02:36,404 INFO L87 Difference]: Start difference. First operand 2596 states and 3133 transitions. Second operand 7 states. [2020-10-14 22:02:50,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:50,191 INFO L93 Difference]: Finished difference Result 7091 states and 8996 transitions. [2020-10-14 22:02:50,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:02:50,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-14 22:02:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:50,214 INFO L225 Difference]: With dead ends: 7091 [2020-10-14 22:02:50,214 INFO L226 Difference]: Without dead ends: 4808 [2020-10-14 22:02:50,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:02:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2020-10-14 22:02:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 3848. [2020-10-14 22:02:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3848 states. [2020-10-14 22:02:50,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 4840 transitions. [2020-10-14 22:02:50,353 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 4840 transitions. Word has length 331 [2020-10-14 22:02:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:50,354 INFO L479 AbstractCegarLoop]: Abstraction has 3848 states and 4840 transitions. [2020-10-14 22:02:50,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 4840 transitions. [2020-10-14 22:02:50,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-14 22:02:50,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:50,368 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:50,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:02:50,368 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:50,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:50,369 INFO L82 PathProgramCache]: Analyzing trace with hash 655878697, now seen corresponding path program 1 times [2020-10-14 22:02:50,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:50,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460894298] [2020-10-14 22:02:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:50,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:51,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:54,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:55,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:55,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-14 22:02:55,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:02:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 22:02:55,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:55,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:02:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 22:02:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:55,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:55,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:55,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:55,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:55,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:02:55,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:55,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:02:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:56,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:56,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:02:56,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-14 22:02:56,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:56,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:02:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:56,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:02:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:56,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:56,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:02:56,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:02:56,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:56,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:02:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:56,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-14 22:02:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:56,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:56,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:56,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:02:56,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:56,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 22:02:56,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:56,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 22:02:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 168 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 22:02:56,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460894298] [2020-10-14 22:02:56,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:56,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:02:56,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026216532] [2020-10-14 22:02:56,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:02:56,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:56,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:02:56,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:02:56,488 INFO L87 Difference]: Start difference. First operand 3848 states and 4840 transitions. Second operand 8 states. [2020-10-14 22:03:11,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:11,457 INFO L93 Difference]: Finished difference Result 12464 states and 16590 transitions. [2020-10-14 22:03:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 22:03:11,459 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 466 [2020-10-14 22:03:11,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:11,501 INFO L225 Difference]: With dead ends: 12464 [2020-10-14 22:03:11,501 INFO L226 Difference]: Without dead ends: 8929 [2020-10-14 22:03:11,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:03:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8929 states. [2020-10-14 22:03:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8929 to 7039. [2020-10-14 22:03:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7039 states. [2020-10-14 22:03:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7039 states to 7039 states and 8760 transitions. [2020-10-14 22:03:11,718 INFO L78 Accepts]: Start accepts. Automaton has 7039 states and 8760 transitions. Word has length 466 [2020-10-14 22:03:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:11,719 INFO L479 AbstractCegarLoop]: Abstraction has 7039 states and 8760 transitions. [2020-10-14 22:03:11,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:03:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7039 states and 8760 transitions. [2020-10-14 22:03:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-10-14 22:03:11,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:11,737 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:11,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:03:11,738 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:11,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:11,739 INFO L82 PathProgramCache]: Analyzing trace with hash 835133255, now seen corresponding path program 1 times [2020-10-14 22:03:11,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:11,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823417055] [2020-10-14 22:03:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:12,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:13,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:17,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:17,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 559 [2020-10-14 22:03:17,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:03:17,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 22:03:17,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:17,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 22:03:17,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 22:03:17,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:17,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:17,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:17,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:17,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:03:17,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:17,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:17,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:17,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:17,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:17,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:17,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:03:17,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:17,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:03:17,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:17,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:17,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:03:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:17,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:17,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:17,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:03:17,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:17,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 22:03:17,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:17,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:17,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:17,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:17,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:03:17,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:17,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:03:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:17,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:17,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 22:03:17,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 22:03:17,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:17,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 22:03:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:03:17,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823417055] [2020-10-14 22:03:17,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:17,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:03:17,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69265068] [2020-10-14 22:03:17,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:17,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:17,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:17,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:17,892 INFO L87 Difference]: Start difference. First operand 7039 states and 8760 transitions. Second operand 7 states. [2020-10-14 22:03:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:29,728 INFO L93 Difference]: Finished difference Result 14132 states and 17686 transitions. [2020-10-14 22:03:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:03:29,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 545 [2020-10-14 22:03:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:29,764 INFO L225 Difference]: With dead ends: 14132 [2020-10-14 22:03:29,764 INFO L226 Difference]: Without dead ends: 7406 [2020-10-14 22:03:29,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:03:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7406 states. [2020-10-14 22:03:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7406 to 7047. [2020-10-14 22:03:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7047 states. [2020-10-14 22:03:29,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 8210 transitions. [2020-10-14 22:03:29,978 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 8210 transitions. Word has length 545 [2020-10-14 22:03:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:29,979 INFO L479 AbstractCegarLoop]: Abstraction has 7047 states and 8210 transitions. [2020-10-14 22:03:29,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:29,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 8210 transitions. [2020-10-14 22:03:29,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2020-10-14 22:03:29,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:29,998 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:29,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:03:29,998 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:29,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:29,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1352174874, now seen corresponding path program 1 times [2020-10-14 22:03:30,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:30,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344486870] [2020-10-14 22:03:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:30,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:34,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:34,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 589 [2020-10-14 22:03:34,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:03:34,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4575 [2020-10-14 22:03:34,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:34,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 22:03:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 22:03:34,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:34,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:34,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:34,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:34,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:03:34,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:34,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:34,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:34,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:34,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:03:34,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:34,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 22:03:34,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:34,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:35,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:03:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:35,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:35,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:35,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:03:35,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:35,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 22:03:35,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:35,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:03:35,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:03:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:35,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:35,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 22:03:35,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 22:03:35,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:35,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 22:03:35,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:03:35,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344486870] [2020-10-14 22:03:35,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:35,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:03:35,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915951861] [2020-10-14 22:03:35,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:35,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:35,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:35,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:35,679 INFO L87 Difference]: Start difference. First operand 7047 states and 8210 transitions. Second operand 7 states. [2020-10-14 22:03:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:46,257 INFO L93 Difference]: Finished difference Result 16074 states and 19381 transitions. [2020-10-14 22:03:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:03:46,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 575 [2020-10-14 22:03:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:46,293 INFO L225 Difference]: With dead ends: 16074 [2020-10-14 22:03:46,293 INFO L226 Difference]: Without dead ends: 9340 [2020-10-14 22:03:46,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:03:46,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2020-10-14 22:03:46,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 7733. [2020-10-14 22:03:46,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7733 states. [2020-10-14 22:03:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7733 states to 7733 states and 9418 transitions. [2020-10-14 22:03:46,546 INFO L78 Accepts]: Start accepts. Automaton has 7733 states and 9418 transitions. Word has length 575 [2020-10-14 22:03:46,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:46,548 INFO L479 AbstractCegarLoop]: Abstraction has 7733 states and 9418 transitions. [2020-10-14 22:03:46,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7733 states and 9418 transitions. [2020-10-14 22:03:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-14 22:03:46,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:46,563 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:46,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:03:46,563 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:46,564 INFO L82 PathProgramCache]: Analyzing trace with hash 390454250, now seen corresponding path program 1 times [2020-10-14 22:03:46,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:46,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484408726] [2020-10-14 22:03:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:46,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:49,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:49,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 600 [2020-10-14 22:03:49,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:03:49,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2622 [2020-10-14 22:03:49,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:49,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:49,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:03:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:03:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:49,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:49,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:49,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:49,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:03:49,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:49,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:49,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:49,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:49,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:03:49,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 22:03:49,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:49,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:03:49,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:03:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:49,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:49,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:03:49,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 22:03:49,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:49,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:03:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:03:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:50,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:50,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:50,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 22:03:50,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:03:50,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:50,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-14 22:03:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 199 proven. 110 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 22:03:50,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484408726] [2020-10-14 22:03:50,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:50,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:03:50,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104085599] [2020-10-14 22:03:50,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:50,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:50,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:50,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:50,451 INFO L87 Difference]: Start difference. First operand 7733 states and 9418 transitions. Second operand 7 states. [2020-10-14 22:04:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:07,609 INFO L93 Difference]: Finished difference Result 16791 states and 20447 transitions. [2020-10-14 22:04:07,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:04:07,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 586 [2020-10-14 22:04:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:07,647 INFO L225 Difference]: With dead ends: 16791 [2020-10-14 22:04:07,647 INFO L226 Difference]: Without dead ends: 9371 [2020-10-14 22:04:07,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:04:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9371 states. [2020-10-14 22:04:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9371 to 9019. [2020-10-14 22:04:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9019 states. [2020-10-14 22:04:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9019 states to 9019 states and 10846 transitions. [2020-10-14 22:04:07,854 INFO L78 Accepts]: Start accepts. Automaton has 9019 states and 10846 transitions. Word has length 586 [2020-10-14 22:04:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:07,856 INFO L479 AbstractCegarLoop]: Abstraction has 9019 states and 10846 transitions. [2020-10-14 22:04:07,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 9019 states and 10846 transitions. [2020-10-14 22:04:07,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2020-10-14 22:04:07,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:07,871 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:07,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:04:07,873 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:07,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:07,874 INFO L82 PathProgramCache]: Analyzing trace with hash -978144206, now seen corresponding path program 1 times [2020-10-14 22:04:07,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:07,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246162373] [2020-10-14 22:04:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:08,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:08,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:10,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:12,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:12,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 612 [2020-10-14 22:04:12,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:04:12,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4394 [2020-10-14 22:04:12,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:12,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:04:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 22:04:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:04:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:12,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:12,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:12,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:12,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:12,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:04:12,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:12,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:12,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:12,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:12,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:12,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:12,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:04:12,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 22:04:12,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:12,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:04:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:04:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:12,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:13,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:13,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:04:13,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 22:04:13,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:13,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:04:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:04:13,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:04:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:13,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:13,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:13,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 22:04:13,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 22:04:13,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:13,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 22:04:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 361 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:04:13,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246162373] [2020-10-14 22:04:13,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:13,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:04:13,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375847276] [2020-10-14 22:04:13,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:04:13,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:13,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:04:13,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:04:13,872 INFO L87 Difference]: Start difference. First operand 9019 states and 10846 transitions. Second operand 10 states. [2020-10-14 22:04:39,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:39,466 INFO L93 Difference]: Finished difference Result 26542 states and 33282 transitions. [2020-10-14 22:04:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 22:04:39,469 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 598 [2020-10-14 22:04:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:39,549 INFO L225 Difference]: With dead ends: 26542 [2020-10-14 22:04:39,549 INFO L226 Difference]: Without dead ends: 17836 [2020-10-14 22:04:39,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 22:04:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17836 states. [2020-10-14 22:04:39,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17836 to 17479. [2020-10-14 22:04:39,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17479 states. [2020-10-14 22:04:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17479 states to 17479 states and 20935 transitions. [2020-10-14 22:04:39,991 INFO L78 Accepts]: Start accepts. Automaton has 17479 states and 20935 transitions. Word has length 598 [2020-10-14 22:04:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:39,992 INFO L479 AbstractCegarLoop]: Abstraction has 17479 states and 20935 transitions. [2020-10-14 22:04:39,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:04:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 17479 states and 20935 transitions. [2020-10-14 22:04:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2020-10-14 22:04:40,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:40,014 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:04:40,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:04:40,014 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:40,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:40,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2019622699, now seen corresponding path program 1 times [2020-10-14 22:04:40,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:40,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112304178] [2020-10-14 22:04:40,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:41,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:42,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 623 [2020-10-14 22:04:45,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:04:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 22:04:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:45,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:04:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:04:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-10-14 22:04:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:45,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:45,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:45,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:45,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:45,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:04:45,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:45,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:45,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:45,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:45,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:04:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:04:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:45,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:04:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:45,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:04:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:45,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:45,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:04:45,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:04:45,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-14 22:04:45,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:45,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:04:45,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:45,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:04:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:45,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:45,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:04:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:45,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-10-14 22:04:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:46,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:46,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 22:04:46,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:04:46,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:46,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-14 22:04:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 412 proven. 272 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-14 22:04:46,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112304178] [2020-10-14 22:04:46,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:46,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:04:46,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325485272] [2020-10-14 22:04:46,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:04:46,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:04:46,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:04:46,382 INFO L87 Difference]: Start difference. First operand 17479 states and 20935 transitions. Second operand 8 states. [2020-10-14 22:05:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:03,987 INFO L93 Difference]: Finished difference Result 40999 states and 50307 transitions. [2020-10-14 22:05:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:05:03,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 607 [2020-10-14 22:05:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:04,061 INFO L225 Difference]: With dead ends: 40999 [2020-10-14 22:05:04,061 INFO L226 Difference]: Without dead ends: 21259 [2020-10-14 22:05:04,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:05:04,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21259 states. [2020-10-14 22:05:04,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21259 to 18645. [2020-10-14 22:05:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18645 states. [2020-10-14 22:05:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18645 states to 18645 states and 21289 transitions. [2020-10-14 22:05:04,565 INFO L78 Accepts]: Start accepts. Automaton has 18645 states and 21289 transitions. Word has length 607 [2020-10-14 22:05:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:04,565 INFO L479 AbstractCegarLoop]: Abstraction has 18645 states and 21289 transitions. [2020-10-14 22:05:04,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:05:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 18645 states and 21289 transitions. [2020-10-14 22:05:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2020-10-14 22:05:04,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:04,583 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:04,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:05:04,583 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:04,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:04,584 INFO L82 PathProgramCache]: Analyzing trace with hash -970783358, now seen corresponding path program 1 times [2020-10-14 22:05:04,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:04,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256023534] [2020-10-14 22:05:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:05,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:06,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-14 22:05:07,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:05:07,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2626 [2020-10-14 22:05:07,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:05:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:05:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-14 22:05:07,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:07,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:05:07,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:05:07,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:05:07,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:05:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:05:07,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 22:05:07,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:05:07,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:05:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:08,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:08,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 22:05:08,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 22:05:08,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:08,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 22:05:08,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 373 proven. 30 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 22:05:08,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256023534] [2020-10-14 22:05:08,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:08,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:05:08,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772490958] [2020-10-14 22:05:08,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:05:08,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:08,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:05:08,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:05:08,433 INFO L87 Difference]: Start difference. First operand 18645 states and 21289 transitions. Second operand 6 states.