/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:00:05,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:00:05,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:00:05,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:00:05,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:00:05,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:00:05,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:00:05,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:00:06,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:00:06,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:00:06,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:00:06,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:00:06,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:00:06,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:00:06,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:00:06,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:00:06,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:00:06,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:00:06,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:00:06,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:00:06,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:00:06,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:00:06,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:00:06,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:00:06,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:00:06,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:00:06,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:00:06,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:00:06,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:00:06,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:00:06,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:00:06,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:00:06,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:00:06,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:00:06,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:00:06,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:00:06,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:00:06,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:00:06,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:00:06,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:00:06,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:00:06,052 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 04:00:06,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:00:06,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:00:06,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:00:06,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:00:06,095 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:00:06,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:00:06,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:00:06,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:00:06,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:00:06,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:00:06,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:00:06,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:00:06,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:00:06,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:00:06,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:00:06,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:00:06,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:00:06,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:00:06,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:00:06,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:00:06,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:00:06,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:00:06,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:00:06,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:00:06,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:00:06,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:00:06,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:00:06,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:00:06,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:00:06,101 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:00:06,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:00:06,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:00:06,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:00:06,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:00:06,495 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:00:06,496 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label24.c [2020-10-14 04:00:06,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83b77b658/c87b05a5ead745d6aeecb0d2420b0383/FLAG5428d8fc4 [2020-10-14 04:00:07,304 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:00:07,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label24.c [2020-10-14 04:00:07,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83b77b658/c87b05a5ead745d6aeecb0d2420b0383/FLAG5428d8fc4 [2020-10-14 04:00:07,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83b77b658/c87b05a5ead745d6aeecb0d2420b0383 [2020-10-14 04:00:07,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:00:07,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:00:07,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:00:07,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:00:07,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:00:07,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:00:07" (1/1) ... [2020-10-14 04:00:07,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a94c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:07, skipping insertion in model container [2020-10-14 04:00:07,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:00:07" (1/1) ... [2020-10-14 04:00:07,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:00:07,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:00:08,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:00:08,929 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:00:09,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:00:09,494 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:00:09,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:09 WrapperNode [2020-10-14 04:00:09,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:00:09,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:00:09,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:00:09,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:00:09,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:09" (1/1) ... [2020-10-14 04:00:09,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:09" (1/1) ... [2020-10-14 04:00:09,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:09" (1/1) ... [2020-10-14 04:00:09,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:09" (1/1) ... [2020-10-14 04:00:09,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:09" (1/1) ... [2020-10-14 04:00:09,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:09" (1/1) ... [2020-10-14 04:00:09,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:09" (1/1) ... [2020-10-14 04:00:09,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:00:09,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:00:09,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:00:09,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:00:09,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:09" (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 04:00:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:00:09,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:00:09,985 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:00:09,985 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:00:09,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:00:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:00:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:00:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:00:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:00:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:00:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:00:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:00:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:00:20,261 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:00:20,261 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:00:20,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:00:20 BoogieIcfgContainer [2020-10-14 04:00:20,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:00:20,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:00:20,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:00:20,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:00:20,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:00:07" (1/3) ... [2020-10-14 04:00:20,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c5b732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:00:20, skipping insertion in model container [2020-10-14 04:00:20,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:09" (2/3) ... [2020-10-14 04:00:20,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c5b732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:00:20, skipping insertion in model container [2020-10-14 04:00:20,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:00:20" (3/3) ... [2020-10-14 04:00:20,281 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label24.c [2020-10-14 04:00:20,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:00:20,302 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:00:20,318 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:00:20,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:00:20,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:00:20,347 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:00:20,347 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:00:20,347 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:00:20,348 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:00:20,348 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:00:20,348 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:00:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:00:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 04:00:20,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:20,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:00:20,393 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:20,401 INFO L82 PathProgramCache]: Analyzing trace with hash -38263863, now seen corresponding path program 1 times [2020-10-14 04:00:20,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:20,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252111570] [2020-10-14 04:00:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:20,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:21,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:21,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:00:21,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:21,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-14 04:00:21,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:21,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:00:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:00:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:00:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:00:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:21,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:21,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:21,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:21,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:21,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:00:21,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:21,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:00:21,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:00:21,441 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 04:00:21,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252111570] [2020-10-14 04:00:21,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:00:21,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:00:21,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786917177] [2020-10-14 04:00:21,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:00:21,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:21,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:00:21,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:00:21,472 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:00:31,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:31,742 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 04:00:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:00:31,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-14 04:00:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:31,772 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 04:00:31,772 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 04:00:31,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:31,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 04:00:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 04:00:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 04:00:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 04:00:31,912 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 66 [2020-10-14 04:00:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:31,913 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 04:00:31,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:00:31,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 04:00:31,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 04:00:31,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:31,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:00:31,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:00:31,922 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:31,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:31,923 INFO L82 PathProgramCache]: Analyzing trace with hash -754395436, now seen corresponding path program 1 times [2020-10-14 04:00:31,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:31,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328810544] [2020-10-14 04:00:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:32,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:32,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:32,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:34,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:34,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:34,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 04:00:34,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:00:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2432 [2020-10-14 04:00:34,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:34,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:34,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:34,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:00:34,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:00:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:00:34,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:34,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:34,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:34,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:34,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:00:34,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:34,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:34,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:34,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:34,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:34,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:34,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:00:34,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 04:00:34,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:34,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:00:34,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:00:34,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328810544] [2020-10-14 04:00:34,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:34,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:00:34,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290992986] [2020-10-14 04:00:34,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:00:34,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:34,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:00:34,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:34,728 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-14 04:00:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:46,360 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-14 04:00:46,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:00:46,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 04:00:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:46,383 INFO L225 Difference]: With dead ends: 2884 [2020-10-14 04:00:46,384 INFO L226 Difference]: Without dead ends: 1888 [2020-10-14 04:00:46,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:00:46,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-14 04:00:46,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-14 04:00:46,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-14 04:00:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-14 04:00:46,500 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 137 [2020-10-14 04:00:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:46,504 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-14 04:00:46,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:00:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-14 04:00:46,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 04:00:46,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:46,526 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:00:46,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:00:46,527 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:46,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1967434272, now seen corresponding path program 1 times [2020-10-14 04:00:46,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:46,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727130455] [2020-10-14 04:00:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:46,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:47,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:51,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:51,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 04:00:51,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:00:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4684 [2020-10-14 04:00:51,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:51,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:00:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:00:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:51,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:51,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:51,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:51,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:51,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:51,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:00:51,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:51,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:51,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:51,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:51,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:51,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:00:51,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:51,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 04:00:51,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:51,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:51,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:00:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:00:51,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727130455] [2020-10-14 04:00:51,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:51,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:00:51,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100276671] [2020-10-14 04:00:51,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:00:51,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:51,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:00:51,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:51,547 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 5 states. [2020-10-14 04:01:08,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:08,133 INFO L93 Difference]: Finished difference Result 4659 states and 6588 transitions. [2020-10-14 04:01:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:01:08,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-14 04:01:08,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:08,154 INFO L225 Difference]: With dead ends: 4659 [2020-10-14 04:01:08,155 INFO L226 Difference]: Without dead ends: 2781 [2020-10-14 04:01:08,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:01:08,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-14 04:01:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2775. [2020-10-14 04:01:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-14 04:01:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3665 transitions. [2020-10-14 04:01:08,266 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3665 transitions. Word has length 140 [2020-10-14 04:01:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:08,269 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3665 transitions. [2020-10-14 04:01:08,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:01:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3665 transitions. [2020-10-14 04:01:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 04:01:08,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:08,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 04:01:08,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:01:08,282 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:08,283 INFO L82 PathProgramCache]: Analyzing trace with hash 2066398404, now seen corresponding path program 1 times [2020-10-14 04:01:08,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:08,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328762496] [2020-10-14 04:01:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:08,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:08,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:09,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:09,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:09,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 04:01:09,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:01:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1548 [2020-10-14 04:01:09,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:09,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:01:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:01:09,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:09,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:10,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:10,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:10,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:01:10,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:10,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:10,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:10,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:10,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:01:10,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 04:01:10,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:10,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:01:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:01:10,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328762496] [2020-10-14 04:01:10,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:10,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:01:10,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607120120] [2020-10-14 04:01:10,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:01:10,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:10,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:01:10,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:01:10,222 INFO L87 Difference]: Start difference. First operand 2775 states and 3665 transitions. Second operand 5 states. [2020-10-14 04:01:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:25,197 INFO L93 Difference]: Finished difference Result 8201 states and 10958 transitions. [2020-10-14 04:01:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:01:25,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 04:01:25,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:25,230 INFO L225 Difference]: With dead ends: 8201 [2020-10-14 04:01:25,230 INFO L226 Difference]: Without dead ends: 5432 [2020-10-14 04:01:25,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:01:25,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5432 states. [2020-10-14 04:01:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5432 to 5407. [2020-10-14 04:01:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5407 states. [2020-10-14 04:01:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 6823 transitions. [2020-10-14 04:01:25,376 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 6823 transitions. Word has length 145 [2020-10-14 04:01:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:25,376 INFO L479 AbstractCegarLoop]: Abstraction has 5407 states and 6823 transitions. [2020-10-14 04:01:25,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:01:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 6823 transitions. [2020-10-14 04:01:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 04:01:25,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:25,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:25,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:01:25,381 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:25,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:25,381 INFO L82 PathProgramCache]: Analyzing trace with hash 121107584, now seen corresponding path program 1 times [2020-10-14 04:01:25,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:25,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216288365] [2020-10-14 04:01:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:25,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:25,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:26,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 04:01:26,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:01:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-14 04:01:26,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:26,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 04:01:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:01:26,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:26,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:26,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:26,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:26,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:01:26,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:26,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:26,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:26,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:26,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:26,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:01:26,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:26,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 04:01:26,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:26,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:01:26,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:01:26,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216288365] [2020-10-14 04:01:26,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:26,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:01:26,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105834151] [2020-10-14 04:01:26,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:01:26,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:26,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:01:26,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:01:26,736 INFO L87 Difference]: Start difference. First operand 5407 states and 6823 transitions. Second operand 5 states. [2020-10-14 04:01:44,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:44,880 INFO L93 Difference]: Finished difference Result 13025 states and 16910 transitions. [2020-10-14 04:01:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:01:44,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-14 04:01:44,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:44,926 INFO L225 Difference]: With dead ends: 13025 [2020-10-14 04:01:44,926 INFO L226 Difference]: Without dead ends: 7624 [2020-10-14 04:01:44,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:01:44,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7624 states. [2020-10-14 04:01:45,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7624 to 7616. [2020-10-14 04:01:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7616 states. [2020-10-14 04:01:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7616 states to 7616 states and 9351 transitions. [2020-10-14 04:01:45,151 INFO L78 Accepts]: Start accepts. Automaton has 7616 states and 9351 transitions. Word has length 163 [2020-10-14 04:01:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:45,151 INFO L479 AbstractCegarLoop]: Abstraction has 7616 states and 9351 transitions. [2020-10-14 04:01:45,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:01:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7616 states and 9351 transitions. [2020-10-14 04:01:45,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 04:01:45,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:45,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:45,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:01:45,157 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:45,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:45,157 INFO L82 PathProgramCache]: Analyzing trace with hash -147277832, now seen corresponding path program 1 times [2020-10-14 04:01:45,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:45,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731138444] [2020-10-14 04:01:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:48,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:50,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:50,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 04:01:50,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:01:50,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 04:01:50,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:50,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:01:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 04:01:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 04:01:50,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:50,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:50,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:50,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:50,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:01:50,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:50,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:50,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:50,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:51,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:51,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:01:51,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:01:51,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1168 [2020-10-14 04:01:51,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:51,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 04:01:51,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:01:51,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731138444] [2020-10-14 04:01:51,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:51,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:01:51,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987589503] [2020-10-14 04:01:51,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:01:51,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:51,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:01:51,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:01:51,821 INFO L87 Difference]: Start difference. First operand 7616 states and 9351 transitions. Second operand 6 states. [2020-10-14 04:02:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:22,096 INFO L93 Difference]: Finished difference Result 20943 states and 27070 transitions. [2020-10-14 04:02:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:02:22,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-10-14 04:02:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:22,157 INFO L225 Difference]: With dead ends: 20943 [2020-10-14 04:02:22,158 INFO L226 Difference]: Without dead ends: 13333 [2020-10-14 04:02:22,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:02:22,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13333 states. [2020-10-14 04:02:22,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13333 to 11154. [2020-10-14 04:02:22,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11154 states. [2020-10-14 04:02:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11154 states to 11154 states and 14222 transitions. [2020-10-14 04:02:22,504 INFO L78 Accepts]: Start accepts. Automaton has 11154 states and 14222 transitions. Word has length 167 [2020-10-14 04:02:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:22,505 INFO L479 AbstractCegarLoop]: Abstraction has 11154 states and 14222 transitions. [2020-10-14 04:02:22,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:02:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 11154 states and 14222 transitions. [2020-10-14 04:02:22,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 04:02:22,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:22,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:22,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:02:22,511 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:22,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:22,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1740835480, now seen corresponding path program 1 times [2020-10-14 04:02:22,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:22,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181896402] [2020-10-14 04:02:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:22,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:22,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:23,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:24,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:24,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 04:02:24,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:02:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1865 [2020-10-14 04:02:24,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:24,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 04:02:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:02:24,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:24,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:24,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:24,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:24,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:24,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:02:24,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:24,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:24,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:24,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:24,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 04:02:24,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:24,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 04:02:24,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:24,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 04:02:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:24,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181896402] [2020-10-14 04:02:24,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:24,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:02:24,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222331008] [2020-10-14 04:02:24,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:02:24,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:24,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:02:24,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:24,876 INFO L87 Difference]: Start difference. First operand 11154 states and 14222 transitions. Second operand 5 states. [2020-10-14 04:02:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:48,899 INFO L93 Difference]: Finished difference Result 31095 states and 40261 transitions. [2020-10-14 04:02:48,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:48,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-14 04:02:48,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:48,987 INFO L225 Difference]: With dead ends: 31095 [2020-10-14 04:02:48,987 INFO L226 Difference]: Without dead ends: 19947 [2020-10-14 04:02:49,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:02:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19947 states. [2020-10-14 04:02:49,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19947 to 19045. [2020-10-14 04:02:49,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19045 states. [2020-10-14 04:02:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19045 states to 19045 states and 23815 transitions. [2020-10-14 04:02:49,633 INFO L78 Accepts]: Start accepts. Automaton has 19045 states and 23815 transitions. Word has length 194 [2020-10-14 04:02:49,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:49,634 INFO L479 AbstractCegarLoop]: Abstraction has 19045 states and 23815 transitions. [2020-10-14 04:02:49,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:02:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 19045 states and 23815 transitions. [2020-10-14 04:02:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 04:02:49,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:49,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:02:49,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:02:49,643 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:49,643 INFO L82 PathProgramCache]: Analyzing trace with hash 49269525, now seen corresponding path program 1 times [2020-10-14 04:02:49,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:49,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257099220] [2020-10-14 04:02:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:54,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:54,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 04:02:54,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:02:54,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:02:54,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:54,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:02:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:02:54,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:02:54,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:54,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:54,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:54,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:54,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:54,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:02:54,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:54,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:54,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:54,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:54,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:54,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:02:54,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:54,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:54,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:54,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:02:54,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:02:54,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:54,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:02:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:55,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 04:02:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:55,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:55,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 04:02:55,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:55,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 04:02:55,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:55,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:55,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:55,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:02:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:02:55,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:02:55,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257099220] [2020-10-14 04:02:55,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:55,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:02:55,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827549912] [2020-10-14 04:02:55,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:02:55,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:55,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:02:55,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:02:55,400 INFO L87 Difference]: Start difference. First operand 19045 states and 23815 transitions. Second operand 8 states. [2020-10-14 04:03:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:23,504 INFO L93 Difference]: Finished difference Result 54366 states and 71360 transitions. [2020-10-14 04:03:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:03:23,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-10-14 04:03:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:23,647 INFO L225 Difference]: With dead ends: 54366 [2020-10-14 04:03:23,648 INFO L226 Difference]: Without dead ends: 29168 [2020-10-14 04:03:23,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:03:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29168 states. [2020-10-14 04:03:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29168 to 22657. [2020-10-14 04:03:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22657 states. [2020-10-14 04:03:24,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22657 states to 22657 states and 27054 transitions. [2020-10-14 04:03:24,273 INFO L78 Accepts]: Start accepts. Automaton has 22657 states and 27054 transitions. Word has length 219 [2020-10-14 04:03:24,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:24,274 INFO L479 AbstractCegarLoop]: Abstraction has 22657 states and 27054 transitions. [2020-10-14 04:03:24,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:03:24,274 INFO L276 IsEmpty]: Start isEmpty. Operand 22657 states and 27054 transitions. [2020-10-14 04:03:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 04:03:24,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:24,281 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:03:24,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:03:24,282 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:24,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:24,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1490486597, now seen corresponding path program 1 times [2020-10-14 04:03:24,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:24,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001131188] [2020-10-14 04:03:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:24,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:26,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:28,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:28,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 04:03:28,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:03:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4255 [2020-10-14 04:03:28,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:28,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:03:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:03:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:28,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:28,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:28,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:28,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:28,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:03:28,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:28,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:28,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:28,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:28,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:03:28,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:28,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:03:28,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:28,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:03:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:03:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:29,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:29,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:03:29,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 04:03:29,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:29,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:03:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:29,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:03:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:29,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:29,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 04:03:29,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 04:03:29,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:29,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:03:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:03:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 04:03:29,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001131188] [2020-10-14 04:03:29,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:29,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:03:29,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124628690] [2020-10-14 04:03:29,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:03:29,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:29,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:03:29,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:03:29,496 INFO L87 Difference]: Start difference. First operand 22657 states and 27054 transitions. Second operand 7 states. [2020-10-14 04:03:45,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:45,870 INFO L93 Difference]: Finished difference Result 45756 states and 54661 transitions. [2020-10-14 04:03:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:03:45,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-14 04:03:45,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:45,975 INFO L225 Difference]: With dead ends: 45756 [2020-10-14 04:03:45,976 INFO L226 Difference]: Without dead ends: 23105 [2020-10-14 04:03:46,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:03:46,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23105 states. [2020-10-14 04:03:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23105 to 23097. [2020-10-14 04:03:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23097 states. [2020-10-14 04:03:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23097 states to 23097 states and 27547 transitions. [2020-10-14 04:03:46,548 INFO L78 Accepts]: Start accepts. Automaton has 23097 states and 27547 transitions. Word has length 316 [2020-10-14 04:03:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:46,549 INFO L479 AbstractCegarLoop]: Abstraction has 23097 states and 27547 transitions. [2020-10-14 04:03:46,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:03:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 23097 states and 27547 transitions. [2020-10-14 04:03:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-14 04:03:46,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:46,562 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-14 04:03:46,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:03:46,563 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:46,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:46,563 INFO L82 PathProgramCache]: Analyzing trace with hash 496821381, now seen corresponding path program 1 times [2020-10-14 04:03:46,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:46,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513307475] [2020-10-14 04:03:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:46,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:47,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:50,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:50,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 04:03:50,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:03:50,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3388 [2020-10-14 04:03:50,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:50,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:03:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-14 04:03:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 04:03:50,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:03:50,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:50,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:50,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:50,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:03:50,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:50,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:50,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:03:50,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:50,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:50,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:03:50,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:03:50,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:50,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:50,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:50,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:03:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:50,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:50,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:50,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 04:03:50,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:03:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 04:03:50,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:50,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 04:03:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:03:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 04:03:51,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513307475] [2020-10-14 04:03:51,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:51,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:03:51,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909071333] [2020-10-14 04:03:51,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:03:51,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:51,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:03:51,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:03:51,326 INFO L87 Difference]: Start difference. First operand 23097 states and 27547 transitions. Second operand 6 states. [2020-10-14 04:03:53,780 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 50