/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/Problem13_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:00:49,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:00:49,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:00:49,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:00:49,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:00:49,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:00:49,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:00:49,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:00:49,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:00:49,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:00:49,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:00:49,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:00:49,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:00:49,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:00:49,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:00:49,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:00:49,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:00:49,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:00:49,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:00:49,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:00:49,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:00:49,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:00:49,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:00:49,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:00:49,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:00:49,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:00:49,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:00:49,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:00:49,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:00:49,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:00:49,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:00:49,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:00:49,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:00:49,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:00:49,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:00:49,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:00:49,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:00:49,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:00:49,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:00:49,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:00:49,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:00:49,310 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 03:00:49,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:00:49,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:00:49,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:00:49,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:00:49,337 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:00:49,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:00:49,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:00:49,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:00:49,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:00:49,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:00:49,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:00:49,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:00:49,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:00:49,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:00:49,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:00:49,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:00:49,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:00:49,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:00:49,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:00:49,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:00:49,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:00:49,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:00:49,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:00:49,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:00:49,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:00:49,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:00:49,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:00:49,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:00:49,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:00:49,343 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 03:00:49,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:00:49,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:00:49,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:00:49,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:00:49,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:00:49,764 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14.c [2020-10-14 03:00:49,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f1fa088/c8329429b7634597a906cceec6033076/FLAG84105d6bd [2020-10-14 03:00:50,729 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:00:50,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label14.c [2020-10-14 03:00:50,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f1fa088/c8329429b7634597a906cceec6033076/FLAG84105d6bd [2020-10-14 03:00:51,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f1fa088/c8329429b7634597a906cceec6033076 [2020-10-14 03:00:51,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:00:51,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:00:51,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:00:51,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:00:51,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:00:51,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:00:51" (1/1) ... [2020-10-14 03:00:51,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236d82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:51, skipping insertion in model container [2020-10-14 03:00:51,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:00:51" (1/1) ... [2020-10-14 03:00:51,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:00:51,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:00:53,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:00:53,352 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:00:54,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:00:54,162 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:00:54,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:54 WrapperNode [2020-10-14 03:00:54,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:00:54,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:00:54,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:00:54,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:00:54,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:54" (1/1) ... [2020-10-14 03:00:54,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:54" (1/1) ... [2020-10-14 03:00:54,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:54" (1/1) ... [2020-10-14 03:00:54,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:54" (1/1) ... [2020-10-14 03:00:54,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:54" (1/1) ... [2020-10-14 03:00:54,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:54" (1/1) ... [2020-10-14 03:00:54,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:54" (1/1) ... [2020-10-14 03:00:54,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:00:54,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:00:54,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:00:54,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:00:54,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:54" (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 03:00:54,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:00:54,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:00:54,650 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:00:54,650 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:00:54,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:00:54,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:00:54,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:00:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:00:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:00:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:00:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:00:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:00:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:00:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:00:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:00:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:00:54,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:01:08,829 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:01:08,830 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:01:08,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:01:08 BoogieIcfgContainer [2020-10-14 03:01:08,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:01:08,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:01:08,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:01:08,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:01:08,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:00:51" (1/3) ... [2020-10-14 03:01:08,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad6401a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:01:08, skipping insertion in model container [2020-10-14 03:01:08,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:00:54" (2/3) ... [2020-10-14 03:01:08,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad6401a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:01:08, skipping insertion in model container [2020-10-14 03:01:08,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:01:08" (3/3) ... [2020-10-14 03:01:08,852 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label14.c [2020-10-14 03:01:08,863 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:01:08,873 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:01:08,888 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:01:08,918 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:01:08,918 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:01:08,919 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:01:08,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:01:08,919 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:01:08,919 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:01:08,919 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:01:08,919 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:01:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:01:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 03:01:08,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:01:08,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:01:08,970 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:01:08,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:01:08,977 INFO L82 PathProgramCache]: Analyzing trace with hash -892246856, now seen corresponding path program 1 times [2020-10-14 03:01:08,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:01:08,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753280884] [2020-10-14 03:01:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:01:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:09,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:09,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:09,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 03:01:09,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-14 03:01:09,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:09,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:01:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:01:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 03:01:09,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:01:09,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:01:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:09,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:09,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:09,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:01:09,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 03:01:09,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:09,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:09,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:01:09,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:01:09,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:01:09,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:01:09,849 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 03:01:09,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753280884] [2020-10-14 03:01:09,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:01:09,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:01:09,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845475269] [2020-10-14 03:01:09,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:01:09,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:01:09,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:01:09,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:01:09,883 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:01:25,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:01:25,152 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 03:01:25,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:01:25,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 03:01:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:01:25,196 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 03:01:25,197 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 03:01:25,207 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 03:01:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 03:01:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 03:01:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 03:01:25,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 03:01:25,386 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 47 [2020-10-14 03:01:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:01:25,387 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 03:01:25,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:01:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 03:01:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 03:01:25,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:01:25,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:25,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:01:25,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:01:25,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:01:25,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1430158880, now seen corresponding path program 1 times [2020-10-14 03:01:25,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:01:25,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223978296] [2020-10-14 03:01:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:01:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:25,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:27,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:27,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:01:27,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:01:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-10-14 03:01:27,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:27,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:01:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:01:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:01:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:01:27,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:01:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:27,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:27,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:01:27,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:27,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:01:27,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:27,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:27,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:01:27,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:01:27,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:01:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:01:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:27,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:27,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:27,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:01:27,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:01:27,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:27,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:01:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:01:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:01:27,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:01:27,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223978296] [2020-10-14 03:01:27,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:01:27,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:01:27,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419750681] [2020-10-14 03:01:27,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:01:27,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:01:27,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:01:27,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:01:27,665 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 5 states. [2020-10-14 03:01:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:01:42,379 INFO L93 Difference]: Finished difference Result 5477 states and 9070 transitions. [2020-10-14 03:01:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:01:42,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-14 03:01:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:01:42,410 INFO L225 Difference]: With dead ends: 5477 [2020-10-14 03:01:42,410 INFO L226 Difference]: Without dead ends: 3598 [2020-10-14 03:01:42,418 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 03:01:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2020-10-14 03:01:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3576. [2020-10-14 03:01:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3576 states. [2020-10-14 03:01:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 5528 transitions. [2020-10-14 03:01:42,561 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 5528 transitions. Word has length 117 [2020-10-14 03:01:42,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:01:42,562 INFO L479 AbstractCegarLoop]: Abstraction has 3576 states and 5528 transitions. [2020-10-14 03:01:42,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:01:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 5528 transitions. [2020-10-14 03:01:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 03:01:42,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:01:42,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:42,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:01:42,573 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:01:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:01:42,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1837938593, now seen corresponding path program 1 times [2020-10-14 03:01:42,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:01:42,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715387373] [2020-10-14 03:01:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:01:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:42,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:43,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:44,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:44,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:44,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 03:01:44,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:01:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-10-14 03:01:44,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:44,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:01:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 03:01:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:01:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:44,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:01:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:44,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:44,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:01:44,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:01:44,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:44,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:01:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:01:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:01:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:44,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:01:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:44,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:44,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:01:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 03:01:44,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:44,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:01:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:01:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:01:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:44,669 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:01:44,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715387373] [2020-10-14 03:01:44,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:01:44,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:01:44,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082010488] [2020-10-14 03:01:44,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:01:44,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:01:44,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:01:44,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:01:44,674 INFO L87 Difference]: Start difference. First operand 3576 states and 5528 transitions. Second operand 5 states. [2020-10-14 03:02:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:02:03,370 INFO L93 Difference]: Finished difference Result 10415 states and 16326 transitions. [2020-10-14 03:02:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:02:03,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 03:02:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:02:03,415 INFO L225 Difference]: With dead ends: 10415 [2020-10-14 03:02:03,415 INFO L226 Difference]: Without dead ends: 6845 [2020-10-14 03:02:03,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 03:02:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2020-10-14 03:02:03,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 6840. [2020-10-14 03:02:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6840 states. [2020-10-14 03:02:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6840 states to 6840 states and 9880 transitions. [2020-10-14 03:02:03,619 INFO L78 Accepts]: Start accepts. Automaton has 6840 states and 9880 transitions. Word has length 156 [2020-10-14 03:02:03,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:02:03,620 INFO L479 AbstractCegarLoop]: Abstraction has 6840 states and 9880 transitions. [2020-10-14 03:02:03,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:02:03,620 INFO L276 IsEmpty]: Start isEmpty. Operand 6840 states and 9880 transitions. [2020-10-14 03:02:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 03:02:03,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:03,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:03,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:02:03,626 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:03,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:03,627 INFO L82 PathProgramCache]: Analyzing trace with hash -60128014, now seen corresponding path program 1 times [2020-10-14 03:02:03,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:03,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456552964] [2020-10-14 03:02:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:03,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:04,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:05,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:05,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 03:02:05,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:02:05,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1456 [2020-10-14 03:02:05,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:05,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:02:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 03:02:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:05,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:05,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:05,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:05,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:02:05,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:05,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:05,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:02:05,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:05,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:05,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:05,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 03:02:05,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:02:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 03:02:05,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:05,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 03:02:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 03:02:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:02:05,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456552964] [2020-10-14 03:02:05,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:02:05,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:02:05,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875439263] [2020-10-14 03:02:05,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:02:05,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:05,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:02:05,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:02:05,668 INFO L87 Difference]: Start difference. First operand 6840 states and 9880 transitions. Second operand 6 states. [2020-10-14 03:02:19,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:02:19,797 INFO L93 Difference]: Finished difference Result 10410 states and 15516 transitions. [2020-10-14 03:02:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:02:19,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2020-10-14 03:02:19,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:02:19,844 INFO L225 Difference]: With dead ends: 10410 [2020-10-14 03:02:19,844 INFO L226 Difference]: Without dead ends: 6836 [2020-10-14 03:02:19,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:02:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6836 states. [2020-10-14 03:02:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6836 to 6832. [2020-10-14 03:02:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2020-10-14 03:02:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 9858 transitions. [2020-10-14 03:02:20,049 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 9858 transitions. Word has length 211 [2020-10-14 03:02:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:02:20,050 INFO L479 AbstractCegarLoop]: Abstraction has 6832 states and 9858 transitions. [2020-10-14 03:02:20,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:02:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 9858 transitions. [2020-10-14 03:02:20,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 03:02:20,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:20,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:20,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:02:20,056 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:20,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:20,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1033830563, now seen corresponding path program 1 times [2020-10-14 03:02:20,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:20,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226707598] [2020-10-14 03:02:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:20,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:20,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:22,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:22,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 03:02:22,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:02:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2520 [2020-10-14 03:02:22,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:22,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-14 03:02:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:02:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:22,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:22,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:22,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:02:22,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:22,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:02:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:02:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:22,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:23,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:23,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:02:23,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 03:02:23,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:23,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-14 03:02:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:02:23,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:02:23,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226707598] [2020-10-14 03:02:23,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:02:23,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:02:23,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776116800] [2020-10-14 03:02:23,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:02:23,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:23,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:02:23,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:02:23,231 INFO L87 Difference]: Start difference. First operand 6832 states and 9858 transitions. Second operand 5 states. [2020-10-14 03:02:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:02:47,058 INFO L93 Difference]: Finished difference Result 16926 states and 24692 transitions. [2020-10-14 03:02:47,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:02:47,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-14 03:02:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:02:47,119 INFO L225 Difference]: With dead ends: 16926 [2020-10-14 03:02:47,119 INFO L226 Difference]: Without dead ends: 10100 [2020-10-14 03:02:47,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:02:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10100 states. [2020-10-14 03:02:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10100 to 10083. [2020-10-14 03:02:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10083 states. [2020-10-14 03:02:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10083 states to 10083 states and 13504 transitions. [2020-10-14 03:02:47,460 INFO L78 Accepts]: Start accepts. Automaton has 10083 states and 13504 transitions. Word has length 215 [2020-10-14 03:02:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:02:47,461 INFO L479 AbstractCegarLoop]: Abstraction has 10083 states and 13504 transitions. [2020-10-14 03:02:47,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:02:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 10083 states and 13504 transitions. [2020-10-14 03:02:47,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 03:02:47,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:47,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:02:47,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:02:47,470 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:47,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:47,470 INFO L82 PathProgramCache]: Analyzing trace with hash 651990232, now seen corresponding path program 1 times [2020-10-14 03:02:47,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:47,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974502019] [2020-10-14 03:02:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:47,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:47,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:47,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:52,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:52,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 03:02:52,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:02:52,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 03:02:52,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:52,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:02:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:02:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:02:52,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:52,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:52,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:52,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:52,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:52,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:52,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:02:52,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:52,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:02:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:02:52,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:52,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:52,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:52,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:02:52,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:02:52,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:52,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:02:52,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:52,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:02:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:53,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:53,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:02:53,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:53,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-14 03:02:53,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:53,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:02:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:02:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 03:02:53,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:02:53,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974502019] [2020-10-14 03:02:53,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:02:53,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:02:53,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974830465] [2020-10-14 03:02:53,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:02:53,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:53,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:02:53,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:02:53,342 INFO L87 Difference]: Start difference. First operand 10083 states and 13504 transitions. Second operand 8 states. [2020-10-14 03:03:23,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:23,778 INFO L93 Difference]: Finished difference Result 20346 states and 27585 transitions. [2020-10-14 03:03:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:03:23,781 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-10-14 03:03:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:23,824 INFO L225 Difference]: With dead ends: 20346 [2020-10-14 03:03:23,825 INFO L226 Difference]: Without dead ends: 10269 [2020-10-14 03:03:23,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:03:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10269 states. [2020-10-14 03:03:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10269 to 10214. [2020-10-14 03:03:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10214 states. [2020-10-14 03:03:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10214 states to 10214 states and 13026 transitions. [2020-10-14 03:03:24,113 INFO L78 Accepts]: Start accepts. Automaton has 10214 states and 13026 transitions. Word has length 229 [2020-10-14 03:03:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:24,114 INFO L479 AbstractCegarLoop]: Abstraction has 10214 states and 13026 transitions. [2020-10-14 03:03:24,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:03:24,115 INFO L276 IsEmpty]: Start isEmpty. Operand 10214 states and 13026 transitions. [2020-10-14 03:03:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 03:03:24,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:24,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:24,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:03:24,122 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:24,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1185699008, now seen corresponding path program 1 times [2020-10-14 03:03:24,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:24,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329390338] [2020-10-14 03:03:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:24,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:26,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:26,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 03:03:26,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:03:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2004 [2020-10-14 03:03:26,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:26,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 197 [2020-10-14 03:03:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:03:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:26,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:26,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:26,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:26,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:26,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:03:26,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:26,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:26,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:26,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:26,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:26,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 03:03:26,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 03:03:26,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:26,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 03:03:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:03:26,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329390338] [2020-10-14 03:03:26,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:26,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:03:26,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138564816] [2020-10-14 03:03:26,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:03:26,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:26,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:03:26,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:03:26,754 INFO L87 Difference]: Start difference. First operand 10214 states and 13026 transitions. Second operand 5 states. [2020-10-14 03:03:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:58,370 INFO L93 Difference]: Finished difference Result 21391 states and 28520 transitions. [2020-10-14 03:03:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:58,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-14 03:03:58,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:58,441 INFO L225 Difference]: With dead ends: 21391 [2020-10-14 03:03:58,442 INFO L226 Difference]: Without dead ends: 15276 [2020-10-14 03:03:58,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:03:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15276 states. [2020-10-14 03:03:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15276 to 15204. [2020-10-14 03:03:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15204 states. [2020-10-14 03:03:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15204 states to 15204 states and 19798 transitions. [2020-10-14 03:03:59,890 INFO L78 Accepts]: Start accepts. Automaton has 15204 states and 19798 transitions. Word has length 234 [2020-10-14 03:03:59,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:59,891 INFO L479 AbstractCegarLoop]: Abstraction has 15204 states and 19798 transitions. [2020-10-14 03:03:59,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:03:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 15204 states and 19798 transitions. [2020-10-14 03:03:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 03:03:59,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:59,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:03:59,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:03:59,899 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:59,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:59,900 INFO L82 PathProgramCache]: Analyzing trace with hash -951066138, now seen corresponding path program 1 times [2020-10-14 03:03:59,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:59,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652086383] [2020-10-14 03:03:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:01,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:04,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:04,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 03:04:04,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:04:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 03:04:04,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:04,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 03:04:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:04:04,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:05,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:05,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:05,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:05,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:05,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:04:05,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:05,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:05,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:05,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:05,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:04:05,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:05,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 03:04:05,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:05,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:05,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:04:05,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:05,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 03:04:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:05,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:05,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:04:05,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 03:04:05,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:05,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:04:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:04:05,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:04:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:04:05,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652086383] [2020-10-14 03:04:05,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:05,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:04:05,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021965182] [2020-10-14 03:04:05,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:04:05,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:04:05,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:04:05,609 INFO L87 Difference]: Start difference. First operand 15204 states and 19798 transitions. Second operand 7 states. [2020-10-14 03:04:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:37,634 INFO L93 Difference]: Finished difference Result 35571 states and 47637 transitions. [2020-10-14 03:04:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:04:37,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-14 03:04:37,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:37,738 INFO L225 Difference]: With dead ends: 35571 [2020-10-14 03:04:37,739 INFO L226 Difference]: Without dead ends: 20373 [2020-10-14 03:04:37,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:04:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20373 states. [2020-10-14 03:04:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20373 to 20336. [2020-10-14 03:04:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20336 states. [2020-10-14 03:04:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20336 states to 20336 states and 26893 transitions. [2020-10-14 03:04:38,365 INFO L78 Accepts]: Start accepts. Automaton has 20336 states and 26893 transitions. Word has length 238 [2020-10-14 03:04:38,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:38,366 INFO L479 AbstractCegarLoop]: Abstraction has 20336 states and 26893 transitions. [2020-10-14 03:04:38,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:04:38,366 INFO L276 IsEmpty]: Start isEmpty. Operand 20336 states and 26893 transitions. [2020-10-14 03:04:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 03:04:38,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:38,375 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:04:38,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:04:38,376 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:38,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1992058548, now seen corresponding path program 1 times [2020-10-14 03:04:38,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:38,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623478542] [2020-10-14 03:04:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:38,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:38,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking...