/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/Problem15_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:27:58,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:27:58,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:27:58,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:27:58,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:27:58,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:27:58,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:27:58,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:27:58,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:27:58,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:27:58,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:27:58,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:27:58,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:27:58,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:27:58,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:27:58,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:27:58,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:27:58,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:27:58,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:27:58,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:27:58,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:27:58,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:27:58,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:27:58,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:27:58,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:27:58,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:27:58,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:27:58,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:27:58,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:27:58,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:27:58,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:27:58,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:27:58,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:27:58,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:27:58,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:27:58,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:27:58,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:27:58,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:27:58,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:27:58,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:27:58,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:27:58,401 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 03:27:58,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:27:58,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:27:58,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:27:58,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:27:58,444 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:27:58,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:27:58,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:27:58,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:27:58,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:27:58,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:27:58,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:27:58,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:27:58,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:27:58,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:27:58,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:27:58,448 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:27:58,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:27:58,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:27:58,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:27:58,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:27:58,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:27:58,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:27:58,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:27:58,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:27:58,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:27:58,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:27:58,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:27:58,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:27:58,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:27:58,451 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 03:27:58,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:27:58,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:27:58,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:27:58,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:27:58,749 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:27:58,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label22.c [2020-10-14 03:27:58,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78d9b9de5/2cbaa7613e564f81942a58922e1592a3/FLAG58b89ede5 [2020-10-14 03:27:59,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:27:59,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label22.c [2020-10-14 03:27:59,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78d9b9de5/2cbaa7613e564f81942a58922e1592a3/FLAG58b89ede5 [2020-10-14 03:27:59,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78d9b9de5/2cbaa7613e564f81942a58922e1592a3 [2020-10-14 03:27:59,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:27:59,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:27:59,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:27:59,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:27:59,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:27:59,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:27:59" (1/1) ... [2020-10-14 03:27:59,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:59, skipping insertion in model container [2020-10-14 03:27:59,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:27:59" (1/1) ... [2020-10-14 03:27:59,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:27:59,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:28:00,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:28:00,693 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:28:00,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:28:01,017 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:28:01,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:01 WrapperNode [2020-10-14 03:28:01,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:28:01,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:28:01,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:28:01,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:28:01,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:01" (1/1) ... [2020-10-14 03:28:01,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:01" (1/1) ... [2020-10-14 03:28:01,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:01" (1/1) ... [2020-10-14 03:28:01,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:01" (1/1) ... [2020-10-14 03:28:01,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:01" (1/1) ... [2020-10-14 03:28:01,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:01" (1/1) ... [2020-10-14 03:28:01,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:01" (1/1) ... [2020-10-14 03:28:01,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:28:01,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:28:01,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:28:01,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:28:01,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:01" (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 03:28:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:28:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:28:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:28:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:28:01,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:28:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:28:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:28:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:28:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:28:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:28:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:28:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:28:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:28:06,902 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:28:06,902 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:28:06,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:28:06 BoogieIcfgContainer [2020-10-14 03:28:06,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:28:06,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:28:06,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:28:06,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:28:06,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:27:59" (1/3) ... [2020-10-14 03:28:06,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1853690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:28:06, skipping insertion in model container [2020-10-14 03:28:06,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:01" (2/3) ... [2020-10-14 03:28:06,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1853690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:28:06, skipping insertion in model container [2020-10-14 03:28:06,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:28:06" (3/3) ... [2020-10-14 03:28:06,925 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label22.c [2020-10-14 03:28:06,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:28:06,945 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:28:06,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:28:06,987 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:28:06,987 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:28:06,987 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:28:06,987 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:28:06,987 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:28:06,988 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:28:06,988 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:28:06,988 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:28:07,016 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:28:07,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 03:28:07,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:07,025 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] [2020-10-14 03:28:07,026 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:07,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1306431624, now seen corresponding path program 1 times [2020-10-14 03:28:07,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:07,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666795088] [2020-10-14 03:28:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:07,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:07,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:07,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 03:28:07,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-14 03:28:07,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:07,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:07,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:28:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:28:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 03:28:07,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 03:28:07,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:07,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:07,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:07,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 03:28:07,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:07,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:28:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:28:07,677 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 03:28:07,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666795088] [2020-10-14 03:28:07,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:28:07,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:28:07,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462740367] [2020-10-14 03:28:07,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:28:07,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:07,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:28:07,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:28:07,703 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:28:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:15,876 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-14 03:28:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:15,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-14 03:28:15,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:15,901 INFO L225 Difference]: With dead ends: 1224 [2020-10-14 03:28:15,901 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 03:28:15,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:15,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 03:28:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-14 03:28:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 03:28:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-14 03:28:16,011 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 24 [2020-10-14 03:28:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:16,012 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-14 03:28:16,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:28:16,012 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-14 03:28:16,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 03:28:16,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:16,017 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:28:16,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:28:16,018 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:16,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:16,018 INFO L82 PathProgramCache]: Analyzing trace with hash -328033145, now seen corresponding path program 1 times [2020-10-14 03:28:16,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:16,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701187313] [2020-10-14 03:28:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:16,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:16,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:17,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:17,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:28:17,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:28:17,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-14 03:28:17,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:17,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:17,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:28:17,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 03:28:17,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:17,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:17,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:17,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:17,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:28:17,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:17,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:17,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:17,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:17,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:17,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:17,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:17,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:28:17,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 03:28:17,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:17,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:28:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 03:28:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:17,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701187313] [2020-10-14 03:28:17,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:17,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:17,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388359759] [2020-10-14 03:28:17,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:17,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:17,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:17,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:17,326 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-14 03:28:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:26,424 INFO L93 Difference]: Finished difference Result 1395 states and 2299 transitions. [2020-10-14 03:28:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:26,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-14 03:28:26,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:26,433 INFO L225 Difference]: With dead ends: 1395 [2020-10-14 03:28:26,433 INFO L226 Difference]: Without dead ends: 1022 [2020-10-14 03:28:26,435 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 03:28:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2020-10-14 03:28:26,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1016. [2020-10-14 03:28:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-14 03:28:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1466 transitions. [2020-10-14 03:28:26,483 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1466 transitions. Word has length 94 [2020-10-14 03:28:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:26,484 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1466 transitions. [2020-10-14 03:28:26,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:26,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1466 transitions. [2020-10-14 03:28:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 03:28:26,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:26,487 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:28:26,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:28:26,488 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:26,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:26,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1375804861, now seen corresponding path program 1 times [2020-10-14 03:28:26,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:26,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506865423] [2020-10-14 03:28:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:26,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:26,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:26,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 03:28:26,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:26,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 03:28:26,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:26,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:28:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:28:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:28:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:26,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:26,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:26,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:26,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:28:26,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:26,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:28:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:27,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:27,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:27,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:27,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:28:27,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:27,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 03:28:27,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:27,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:27,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:28:27,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:27,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506865423] [2020-10-14 03:28:27,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:28:27,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:28:27,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489957888] [2020-10-14 03:28:27,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:28:27,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:27,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:28:27,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:28:27,325 INFO L87 Difference]: Start difference. First operand 1016 states and 1466 transitions. Second operand 7 states. [2020-10-14 03:28:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:35,548 INFO L93 Difference]: Finished difference Result 2365 states and 3515 transitions. [2020-10-14 03:28:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:28:35,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-14 03:28:35,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:35,560 INFO L225 Difference]: With dead ends: 2365 [2020-10-14 03:28:35,560 INFO L226 Difference]: Without dead ends: 1355 [2020-10-14 03:28:35,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:28:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-10-14 03:28:35,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1329. [2020-10-14 03:28:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-10-14 03:28:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1742 transitions. [2020-10-14 03:28:35,603 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1742 transitions. Word has length 96 [2020-10-14 03:28:35,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:35,604 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 1742 transitions. [2020-10-14 03:28:35,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1742 transitions. [2020-10-14 03:28:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 03:28:35,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:35,607 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:28:35,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:28:35,608 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:35,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1018476545, now seen corresponding path program 1 times [2020-10-14 03:28:35,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:35,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721368958] [2020-10-14 03:28:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:35,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:36,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:36,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:28:36,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:28:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-14 03:28:36,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:36,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:28:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 03:28:36,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:28:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:36,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:36,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:36,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:36,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:28:36,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:36,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:36,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:36,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:36,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:28:36,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 03:28:36,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:36,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:28:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:36,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721368958] [2020-10-14 03:28:36,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:36,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:36,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870650382] [2020-10-14 03:28:36,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:36,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:36,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:36,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:36,503 INFO L87 Difference]: Start difference. First operand 1329 states and 1742 transitions. Second operand 5 states. [2020-10-14 03:28:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:44,024 INFO L93 Difference]: Finished difference Result 2986 states and 4095 transitions. [2020-10-14 03:28:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:44,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-14 03:28:44,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:44,034 INFO L225 Difference]: With dead ends: 2986 [2020-10-14 03:28:44,034 INFO L226 Difference]: Without dead ends: 1659 [2020-10-14 03:28:44,038 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 03:28:44,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-10-14 03:28:44,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1335. [2020-10-14 03:28:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-14 03:28:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1723 transitions. [2020-10-14 03:28:44,074 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1723 transitions. Word has length 98 [2020-10-14 03:28:44,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:44,075 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1723 transitions. [2020-10-14 03:28:44,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1723 transitions. [2020-10-14 03:28:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 03:28:44,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:44,077 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:28:44,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:28:44,078 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:44,078 INFO L82 PathProgramCache]: Analyzing trace with hash -396281549, now seen corresponding path program 1 times [2020-10-14 03:28:44,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:44,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679141246] [2020-10-14 03:28:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:45,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:45,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 03:28:45,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:28:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-14 03:28:45,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:45,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:45,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:45,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:28:45,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 03:28:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:45,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:45,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:45,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:45,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:45,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:45,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 03:28:45,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:45,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:45,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:45,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:45,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:28:45,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:28:45,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:45,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:28:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:45,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679141246] [2020-10-14 03:28:45,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:45,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:45,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822970891] [2020-10-14 03:28:45,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:45,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:45,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:45,517 INFO L87 Difference]: Start difference. First operand 1335 states and 1723 transitions. Second operand 5 states. [2020-10-14 03:28:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:54,072 INFO L93 Difference]: Finished difference Result 3302 states and 4433 transitions. [2020-10-14 03:28:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:54,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 03:28:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:54,086 INFO L225 Difference]: With dead ends: 3302 [2020-10-14 03:28:54,087 INFO L226 Difference]: Without dead ends: 2281 [2020-10-14 03:28:54,090 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 03:28:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2281 states. [2020-10-14 03:28:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2281 to 2281. [2020-10-14 03:28:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-14 03:28:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 2839 transitions. [2020-10-14 03:28:54,157 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 2839 transitions. Word has length 104 [2020-10-14 03:28:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:54,159 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 2839 transitions. [2020-10-14 03:28:54,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 2839 transitions. [2020-10-14 03:28:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 03:28:54,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:54,162 INFO L422 BasicCegarLoop]: trace histogram [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 03:28:54,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:28:54,162 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:54,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:54,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1167130857, now seen corresponding path program 1 times [2020-10-14 03:28:54,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:54,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324378411] [2020-10-14 03:28:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:54,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:54,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:54,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:54,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 03:28:54,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:28:54,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-14 03:28:54,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:54,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:54,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:54,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:28:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 03:28:54,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:54,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:54,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:54,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:54,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:54,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:54,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:28:54,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:54,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:54,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:55,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:28:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 03:28:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:55,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:28:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:55,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324378411] [2020-10-14 03:28:55,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:55,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:55,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211827807] [2020-10-14 03:28:55,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:55,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:55,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:55,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:55,114 INFO L87 Difference]: Start difference. First operand 2281 states and 2839 transitions. Second operand 5 states. [2020-10-14 03:29:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:05,267 INFO L93 Difference]: Finished difference Result 6142 states and 7854 transitions. [2020-10-14 03:29:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:29:05,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-14 03:29:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:05,285 INFO L225 Difference]: With dead ends: 6142 [2020-10-14 03:29:05,285 INFO L226 Difference]: Without dead ends: 4175 [2020-10-14 03:29:05,291 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 03:29:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2020-10-14 03:29:05,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 4159. [2020-10-14 03:29:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4159 states. [2020-10-14 03:29:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 5218 transitions. [2020-10-14 03:29:05,404 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 5218 transitions. Word has length 110 [2020-10-14 03:29:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:05,405 INFO L479 AbstractCegarLoop]: Abstraction has 4159 states and 5218 transitions. [2020-10-14 03:29:05,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:29:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 5218 transitions. [2020-10-14 03:29:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 03:29:05,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:05,408 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:05,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:29:05,409 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:05,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:05,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1921600978, now seen corresponding path program 1 times [2020-10-14 03:29:05,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:05,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441317843] [2020-10-14 03:29:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:05,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:05,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:06,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:07,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:07,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 03:29:07,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:29:07,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2484 [2020-10-14 03:29:07,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:07,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:29:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:29:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:08,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:08,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:08,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:08,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:08,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:29:08,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:08,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:08,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:08,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:08,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:08,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:08,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:29:08,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:08,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 03:29:08,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:08,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:29:08,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 03:29:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:08,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:08,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:08,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 03:29:08,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:08,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 03:29:08,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:08,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:08,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:08,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:08,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:29:08,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:29:08,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441317843] [2020-10-14 03:29:08,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:08,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:08,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698762122] [2020-10-14 03:29:08,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:08,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:08,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:08,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:08,342 INFO L87 Difference]: Start difference. First operand 4159 states and 5218 transitions. Second operand 7 states. [2020-10-14 03:29:21,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:21,457 INFO L93 Difference]: Finished difference Result 11168 states and 14344 transitions. [2020-10-14 03:29:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:29:21,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-14 03:29:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:21,493 INFO L225 Difference]: With dead ends: 11168 [2020-10-14 03:29:21,493 INFO L226 Difference]: Without dead ends: 6704 [2020-10-14 03:29:21,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:29:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6704 states. [2020-10-14 03:29:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6704 to 6361. [2020-10-14 03:29:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6361 states. [2020-10-14 03:29:21,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6361 states to 6361 states and 7710 transitions. [2020-10-14 03:29:21,681 INFO L78 Accepts]: Start accepts. Automaton has 6361 states and 7710 transitions. Word has length 177 [2020-10-14 03:29:21,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:21,682 INFO L479 AbstractCegarLoop]: Abstraction has 6361 states and 7710 transitions. [2020-10-14 03:29:21,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:21,682 INFO L276 IsEmpty]: Start isEmpty. Operand 6361 states and 7710 transitions. [2020-10-14 03:29:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 03:29:21,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:21,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:21,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:29:21,689 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:21,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:21,689 INFO L82 PathProgramCache]: Analyzing trace with hash 558167526, now seen corresponding path program 1 times [2020-10-14 03:29:21,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:21,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569767123] [2020-10-14 03:29:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:21,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:21,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:22,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:23,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:25,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:25,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 03:29:25,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:29:25,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4241 [2020-10-14 03:29:25,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:25,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:29:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:29:25,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:26,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:26,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:26,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:26,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:26,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:29:26,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:26,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:26,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:26,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:26,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:26,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:29:26,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 03:29:26,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:26,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:29:26,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:26,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 03:29:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:26,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:26,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:26,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:29:26,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:26,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 03:29:26,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:26,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:29:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:29:26,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569767123] [2020-10-14 03:29:26,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:26,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:26,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987846710] [2020-10-14 03:29:26,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:26,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:26,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:26,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:26,474 INFO L87 Difference]: Start difference. First operand 6361 states and 7710 transitions. Second operand 7 states. [2020-10-14 03:29:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:35,742 INFO L93 Difference]: Finished difference Result 11302 states and 14471 transitions. [2020-10-14 03:29:35,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:29:35,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-14 03:29:35,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:35,777 INFO L225 Difference]: With dead ends: 11302 [2020-10-14 03:29:35,777 INFO L226 Difference]: Without dead ends: 7415 [2020-10-14 03:29:35,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:29:35,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7415 states. [2020-10-14 03:29:35,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7415 to 7327. [2020-10-14 03:29:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7327 states. [2020-10-14 03:29:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7327 states to 7327 states and 8819 transitions. [2020-10-14 03:29:35,981 INFO L78 Accepts]: Start accepts. Automaton has 7327 states and 8819 transitions. Word has length 180 [2020-10-14 03:29:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:35,981 INFO L479 AbstractCegarLoop]: Abstraction has 7327 states and 8819 transitions. [2020-10-14 03:29:35,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:35,982 INFO L276 IsEmpty]: Start isEmpty. Operand 7327 states and 8819 transitions. [2020-10-14 03:29:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 03:29:35,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:35,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:29:35,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:29:35,986 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:35,987 INFO L82 PathProgramCache]: Analyzing trace with hash -465315420, now seen corresponding path program 1 times [2020-10-14 03:29:35,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:35,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427037128] [2020-10-14 03:29:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:38,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:38,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 03:29:38,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:29:38,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2416 [2020-10-14 03:29:38,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:38,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:29:38,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:29:38,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:38,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:38,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:38,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:38,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:29:38,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:38,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:38,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:38,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:38,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:29:38,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:38,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 03:29:38,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:38,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:29:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:38,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 03:29:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:38,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:38,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:29:38,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:38,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 03:29:38,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:38,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:29:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:29:39,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427037128] [2020-10-14 03:29:39,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:39,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:29:39,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651237513] [2020-10-14 03:29:39,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:29:39,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:39,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:29:39,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:29:39,061 INFO L87 Difference]: Start difference. First operand 7327 states and 8819 transitions. Second operand 8 states. [2020-10-14 03:29:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:52,537 INFO L93 Difference]: Finished difference Result 19525 states and 25936 transitions. [2020-10-14 03:29:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:29:52,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-10-14 03:29:52,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:52,607 INFO L225 Difference]: With dead ends: 19525 [2020-10-14 03:29:52,607 INFO L226 Difference]: Without dead ends: 12511 [2020-10-14 03:29:52,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:29:52,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12511 states. [2020-10-14 03:29:52,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12511 to 10818. [2020-10-14 03:29:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10818 states. [2020-10-14 03:29:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10818 states to 10818 states and 13788 transitions. [2020-10-14 03:29:52,955 INFO L78 Accepts]: Start accepts. Automaton has 10818 states and 13788 transitions. Word has length 182 [2020-10-14 03:29:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:52,956 INFO L479 AbstractCegarLoop]: Abstraction has 10818 states and 13788 transitions. [2020-10-14 03:29:52,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:29:52,956 INFO L276 IsEmpty]: Start isEmpty. Operand 10818 states and 13788 transitions. [2020-10-14 03:29:52,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 03:29:52,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:52,964 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:52,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:29:52,965 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:52,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:52,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1498662045, now seen corresponding path program 1 times [2020-10-14 03:29:52,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:52,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013099391] [2020-10-14 03:29:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:55,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:56,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:56,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 03:29:56,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:29:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3037 [2020-10-14 03:29:56,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:56,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 03:29:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:29:56,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:56,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:56,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:56,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:56,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:56,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:56,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:29:56,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:56,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:56,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:56,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:56,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:56,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:29:56,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:56,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:29:56,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:56,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:56,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 03:29:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:56,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:56,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 03:29:56,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 03:29:56,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:56,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:29:56,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-14 03:29:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:56,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:56,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:29:56,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:56,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 03:29:56,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:56,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:29:56,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 03:29:56,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013099391] [2020-10-14 03:29:56,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:56,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:56,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514683484] [2020-10-14 03:29:56,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:56,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:56,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:56,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:56,745 INFO L87 Difference]: Start difference. First operand 10818 states and 13788 transitions. Second operand 7 states. [2020-10-14 03:30:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:08,016 INFO L93 Difference]: Finished difference Result 26025 states and 34606 transitions. [2020-10-14 03:30:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:30:08,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-14 03:30:08,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:08,081 INFO L225 Difference]: With dead ends: 26025 [2020-10-14 03:30:08,081 INFO L226 Difference]: Without dead ends: 13608 [2020-10-14 03:30:08,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:30:08,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13608 states. [2020-10-14 03:30:08,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13608 to 13285. [2020-10-14 03:30:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13285 states. [2020-10-14 03:30:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13285 states to 13285 states and 16108 transitions. [2020-10-14 03:30:08,468 INFO L78 Accepts]: Start accepts. Automaton has 13285 states and 16108 transitions. Word has length 254 [2020-10-14 03:30:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:08,469 INFO L479 AbstractCegarLoop]: Abstraction has 13285 states and 16108 transitions. [2020-10-14 03:30:08,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 13285 states and 16108 transitions. [2020-10-14 03:30:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 03:30:08,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:08,482 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:08,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:30:08,483 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash -475879653, now seen corresponding path program 1 times [2020-10-14 03:30:08,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:08,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023119691] [2020-10-14 03:30:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:08,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:09,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:09,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 03:30:09,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-14 03:30:09,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:09,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:30:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:30:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-14 03:30:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:09,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:09,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:09,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:09,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:09,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:09,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:30:09,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:09,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:30:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:09,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:09,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:09,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 03:30:09,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-14 03:30:09,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:09,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 03:30:09,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-14 03:30:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:10,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:10,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:10,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:30:10,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:30:10,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:10,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 03:30:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:10,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 34 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 03:30:10,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023119691] [2020-10-14 03:30:10,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:10,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:10,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754319344] [2020-10-14 03:30:10,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:10,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:10,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:10,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:10,325 INFO L87 Difference]: Start difference. First operand 13285 states and 16108 transitions. Second operand 7 states. [2020-10-14 03:30:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:17,968 INFO L93 Difference]: Finished difference Result 26665 states and 32480 transitions. [2020-10-14 03:30:17,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:30:17,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-14 03:30:17,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:18,008 INFO L225 Difference]: With dead ends: 26665 [2020-10-14 03:30:18,008 INFO L226 Difference]: Without dead ends: 13693 [2020-10-14 03:30:18,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:30:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13693 states. [2020-10-14 03:30:18,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13693 to 12737. [2020-10-14 03:30:18,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12737 states. [2020-10-14 03:30:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12737 states to 12737 states and 14934 transitions. [2020-10-14 03:30:18,281 INFO L78 Accepts]: Start accepts. Automaton has 12737 states and 14934 transitions. Word has length 298 [2020-10-14 03:30:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:18,282 INFO L479 AbstractCegarLoop]: Abstraction has 12737 states and 14934 transitions. [2020-10-14 03:30:18,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 12737 states and 14934 transitions. [2020-10-14 03:30:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-14 03:30:18,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:18,297 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:18,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:30:18,298 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:18,298 INFO L82 PathProgramCache]: Analyzing trace with hash -223857175, now seen corresponding path program 1 times [2020-10-14 03:30:18,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:18,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229513672] [2020-10-14 03:30:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:18,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:18,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:20,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:21,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:23,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:23,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-14 03:30:23,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:30:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 03:30:23,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:23,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 03:30:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:30:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:23,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:23,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:23,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:23,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:30:23,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:23,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:23,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:23,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:23,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:23,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:30:23,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:23,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:30:23,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:23,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:23,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:30:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:23,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:23,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:30:23,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:23,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 03:30:23,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:23,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:30:23,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:23,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-14 03:30:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:23,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:24,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:24,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 03:30:24,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 03:30:24,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:24,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 03:30:24,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 03:30:24,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229513672] [2020-10-14 03:30:24,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:24,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:30:24,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362268819] [2020-10-14 03:30:24,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:30:24,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:24,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:30:24,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:30:24,289 INFO L87 Difference]: Start difference. First operand 12737 states and 14934 transitions. Second operand 8 states. [2020-10-14 03:30:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:36,564 INFO L93 Difference]: Finished difference Result 27589 states and 34473 transitions. [2020-10-14 03:30:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:30:36,569 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 423 [2020-10-14 03:30:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:36,633 INFO L225 Difference]: With dead ends: 27589 [2020-10-14 03:30:36,633 INFO L226 Difference]: Without dead ends: 17031 [2020-10-14 03:30:36,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:30:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17031 states. [2020-10-14 03:30:37,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17031 to 15868. [2020-10-14 03:30:37,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15868 states. [2020-10-14 03:30:37,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15868 states to 15868 states and 18668 transitions. [2020-10-14 03:30:37,138 INFO L78 Accepts]: Start accepts. Automaton has 15868 states and 18668 transitions. Word has length 423 [2020-10-14 03:30:37,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:37,139 INFO L479 AbstractCegarLoop]: Abstraction has 15868 states and 18668 transitions. [2020-10-14 03:30:37,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:30:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 15868 states and 18668 transitions. [2020-10-14 03:30:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-14 03:30:37,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:37,156 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:37,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:30:37,157 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:37,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:37,157 INFO L82 PathProgramCache]: Analyzing trace with hash 983059782, now seen corresponding path program 1 times [2020-10-14 03:30:37,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:37,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506312713] [2020-10-14 03:30:37,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:37,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:37,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:42,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:42,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-14 03:30:42,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:30:42,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 03:30:42,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:42,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:42,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:42,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:30:42,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:30:42,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:42,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:42,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:42,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:42,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:42,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:30:42,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:42,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:42,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:42,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:42,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:42,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:30:42,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 03:30:42,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:42,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:30:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:42,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:30:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:42,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:42,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:42,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:30:42,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 03:30:42,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:42,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:42,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:30:42,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:42,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-14 03:30:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:42,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:42,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:30:42,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:42,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:30:42,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:42,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 03:30:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-14 03:30:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:42,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:42,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:42,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:30:42,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:42,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 03:30:42,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:42,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 03:30:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:42,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 158 proven. 137 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-10-14 03:30:43,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506312713] [2020-10-14 03:30:43,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:43,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:43,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511725451] [2020-10-14 03:30:43,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:43,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:43,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:43,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:43,026 INFO L87 Difference]: Start difference. First operand 15868 states and 18668 transitions. Second operand 7 states. [2020-10-14 03:30:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:52,523 INFO L93 Difference]: Finished difference Result 32407 states and 38153 transitions. [2020-10-14 03:30:52,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:30:52,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 450 [2020-10-14 03:30:52,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:52,570 INFO L225 Difference]: With dead ends: 32407 [2020-10-14 03:30:52,571 INFO L226 Difference]: Without dead ends: 16545 [2020-10-14 03:30:52,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:30:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16545 states. [2020-10-14 03:30:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16545 to 16204. [2020-10-14 03:30:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16204 states. [2020-10-14 03:30:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16204 states to 16204 states and 18543 transitions. [2020-10-14 03:30:52,902 INFO L78 Accepts]: Start accepts. Automaton has 16204 states and 18543 transitions. Word has length 450 [2020-10-14 03:30:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:52,903 INFO L479 AbstractCegarLoop]: Abstraction has 16204 states and 18543 transitions. [2020-10-14 03:30:52,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 16204 states and 18543 transitions. [2020-10-14 03:30:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-14 03:30:52,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:52,920 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:52,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:30:52,920 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:52,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:52,921 INFO L82 PathProgramCache]: Analyzing trace with hash -318309654, now seen corresponding path program 1 times [2020-10-14 03:30:52,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:52,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128575794] [2020-10-14 03:30:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:53,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:53,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:53,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:56,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:56,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-14 03:30:56,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:30:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3666 [2020-10-14 03:30:56,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:56,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 387 [2020-10-14 03:30:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:30:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:56,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:56,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:56,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:56,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:30:56,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:56,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:56,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:56,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:30:56,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:56,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 03:30:56,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:56,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:56,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:56,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:30:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:57,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:57,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:30:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 03:30:57,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:57,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 03:30:57,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:57,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:30:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:57,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:57,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:30:57,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:57,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:30:57,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:57,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:30:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 03:30:57,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128575794] [2020-10-14 03:30:57,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:57,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:57,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418239985] [2020-10-14 03:30:57,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:57,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:57,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:57,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:57,320 INFO L87 Difference]: Start difference. First operand 16204 states and 18543 transitions. Second operand 7 states. [2020-10-14 03:31:11,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:31:11,233 INFO L93 Difference]: Finished difference Result 36151 states and 41495 transitions. [2020-10-14 03:31:11,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:31:11,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 473 [2020-10-14 03:31:11,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:31:11,305 INFO L225 Difference]: With dead ends: 36151 [2020-10-14 03:31:11,305 INFO L226 Difference]: Without dead ends: 19953 [2020-10-14 03:31:11,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:31:11,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19953 states. [2020-10-14 03:31:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19953 to 19291. [2020-10-14 03:31:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19291 states. [2020-10-14 03:31:11,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19291 states to 19291 states and 21799 transitions. [2020-10-14 03:31:11,736 INFO L78 Accepts]: Start accepts. Automaton has 19291 states and 21799 transitions. Word has length 473 [2020-10-14 03:31:11,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:31:11,737 INFO L479 AbstractCegarLoop]: Abstraction has 19291 states and 21799 transitions. [2020-10-14 03:31:11,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:31:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 19291 states and 21799 transitions. [2020-10-14 03:31:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-14 03:31:11,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:11,751 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:31:11,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:31:11,752 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:11,752 INFO L82 PathProgramCache]: Analyzing trace with hash -2001625496, now seen corresponding path program 1 times [2020-10-14 03:31:11,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:11,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309361391] [2020-10-14 03:31:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:16,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:16,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-14 03:31:16,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:31:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 03:31:16,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:16,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:31:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:31:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:16,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:31:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:16,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:16,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:31:16,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:31:16,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:16,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:31:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:17,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:17,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:31:17,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:17,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 03:31:17,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:17,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:31:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:31:17,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:31:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:17,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:17,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:17,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:31:17,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:17,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 03:31:17,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:17,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:31:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:31:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:17,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:31:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:17,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:17,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:17,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:31:17,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:17,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:31:17,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:17,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:17,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:17,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 03:31:17,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:17,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:17,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-10-14 03:31:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:17,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:17,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:31:17,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 03:31:17,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:17,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 03:31:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:17,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 184 proven. 137 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-10-14 03:31:17,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309361391] [2020-10-14 03:31:17,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:31:17,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:31:17,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912116993] [2020-10-14 03:31:17,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:31:17,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:31:17,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:31:17,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:31:17,620 INFO L87 Difference]: Start difference. First operand 19291 states and 21799 transitions. Second operand 7 states. [2020-10-14 03:31:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:31:32,032 INFO L93 Difference]: Finished difference Result 41118 states and 46573 transitions. [2020-10-14 03:31:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:31:32,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 476 [2020-10-14 03:31:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:31:32,082 INFO L225 Difference]: With dead ends: 41118 [2020-10-14 03:31:32,082 INFO L226 Difference]: Without dead ends: 21833 [2020-10-14 03:31:32,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:31:32,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21833 states. [2020-10-14 03:31:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21833 to 20555. [2020-10-14 03:31:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20555 states. [2020-10-14 03:31:32,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20555 states to 20555 states and 23336 transitions. [2020-10-14 03:31:32,442 INFO L78 Accepts]: Start accepts. Automaton has 20555 states and 23336 transitions. Word has length 476 [2020-10-14 03:31:32,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:31:32,443 INFO L479 AbstractCegarLoop]: Abstraction has 20555 states and 23336 transitions. [2020-10-14 03:31:32,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:31:32,443 INFO L276 IsEmpty]: Start isEmpty. Operand 20555 states and 23336 transitions. [2020-10-14 03:31:32,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-14 03:31:32,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:32,457 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:31:32,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:31:32,457 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:32,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:32,458 INFO L82 PathProgramCache]: Analyzing trace with hash -108695177, now seen corresponding path program 1 times [2020-10-14 03:31:32,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:32,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051108684] [2020-10-14 03:31:32,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:32,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:40,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:40,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-14 03:31:40,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:40,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8164 [2020-10-14 03:31:40,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:40,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:31:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:31:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 03:31:40,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:40,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:31:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:40,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:40,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:40,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:31:40,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:40,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:31:40,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:40,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:31:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:31:40,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:40,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:31:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:41,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:41,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:31:41,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:41,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 03:31:41,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:41,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:31:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:31:41,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:41,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:31:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:41,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:41,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:41,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 03:31:41,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 03:31:41,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:41,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-14 03:31:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:41,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-14 03:31:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:41,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:41,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:41,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:31:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 03:31:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:41,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 03:31:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:41,821 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 51 proven. 262 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 03:31:41,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051108684] [2020-10-14 03:31:41,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:31:41,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:31:41,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365737976] [2020-10-14 03:31:41,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:31:41,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:31:41,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:31:41,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:31:41,823 INFO L87 Difference]: Start difference. First operand 20555 states and 23336 transitions. Second operand 7 states.