/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/Problem12_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:49:16,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:49:16,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:49:16,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:49:16,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:49:16,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:49:16,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:49:16,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:49:16,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:49:16,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:49:16,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:49:16,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:49:16,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:49:16,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:49:16,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:49:16,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:49:16,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:49:16,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:49:16,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:49:16,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:49:16,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:49:16,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:49:16,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:49:16,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:49:16,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:49:16,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:49:16,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:49:16,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:49:16,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:49:16,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:49:16,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:49:16,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:49:16,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:49:16,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:49:16,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:49:16,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:49:16,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:49:16,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:49:16,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:49:16,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:49:16,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:49:16,292 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 02:49:16,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:49:16,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:49:16,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:49:16,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:49:16,343 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:49:16,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:49:16,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:49:16,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:49:16,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:49:16,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:49:16,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:49:16,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:49:16,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:49:16,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:49:16,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:49:16,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:49:16,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:49:16,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:49:16,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:49:16,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:49:16,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:49:16,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:49:16,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:49:16,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:49:16,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:49:16,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:49:16,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:49:16,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:49:16,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:49:16,350 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 02:49:16,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:49:16,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:49:16,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:49:16,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:49:16,748 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:49:16,749 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2020-10-14 02:49:16,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17c3dddd5/8f223923cb1b43559bf87f94c0b1be7f/FLAG5f066f1a9 [2020-10-14 02:49:17,850 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:49:17,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2020-10-14 02:49:17,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17c3dddd5/8f223923cb1b43559bf87f94c0b1be7f/FLAG5f066f1a9 [2020-10-14 02:49:18,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17c3dddd5/8f223923cb1b43559bf87f94c0b1be7f [2020-10-14 02:49:18,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:49:18,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:49:18,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:49:18,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:49:18,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:49:18,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:49:18" (1/1) ... [2020-10-14 02:49:18,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718a405b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:18, skipping insertion in model container [2020-10-14 02:49:18,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:49:18" (1/1) ... [2020-10-14 02:49:18,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:49:18,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:49:20,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:49:20,204 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:49:21,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:49:21,095 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:49:21,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:21 WrapperNode [2020-10-14 02:49:21,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:49:21,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:49:21,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:49:21,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:49:21,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:21" (1/1) ... [2020-10-14 02:49:21,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:21" (1/1) ... [2020-10-14 02:49:21,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:21" (1/1) ... [2020-10-14 02:49:21,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:21" (1/1) ... [2020-10-14 02:49:21,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:21" (1/1) ... [2020-10-14 02:49:21,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:21" (1/1) ... [2020-10-14 02:49:21,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:21" (1/1) ... [2020-10-14 02:49:21,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:49:21,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:49:21,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:49:21,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:49:21,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:21" (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 02:49:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:49:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:49:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:49:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:49:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:49:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:49:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:49:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:49:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:49:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:49:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:49:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:49:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:49:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:49:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:49:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:49:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:49:27,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:49:27,699 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:49:27,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:49:27 BoogieIcfgContainer [2020-10-14 02:49:27,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:49:27,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:49:27,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:49:27,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:49:27,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:49:18" (1/3) ... [2020-10-14 02:49:27,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af64cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:49:27, skipping insertion in model container [2020-10-14 02:49:27,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:21" (2/3) ... [2020-10-14 02:49:27,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af64cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:49:27, skipping insertion in model container [2020-10-14 02:49:27,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:49:27" (3/3) ... [2020-10-14 02:49:27,727 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label30.c [2020-10-14 02:49:27,737 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:49:27,749 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:49:27,767 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:49:27,806 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:49:27,807 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:49:27,807 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:49:27,807 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:49:27,807 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:49:27,807 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:49:27,807 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:49:27,808 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:49:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:49:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 02:49:27,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:27,866 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] [2020-10-14 02:49:27,867 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:27,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1416358702, now seen corresponding path program 1 times [2020-10-14 02:49:27,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:27,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035266388] [2020-10-14 02:49:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:28,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:28,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:28,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 02:49:28,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:28,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-14 02:49:28,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:28,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:49:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:49:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 02:49:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:49:28,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:28,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:28,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:28,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:28,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 02:49:28,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:28,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:49:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:28,824 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 02:49:28,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035266388] [2020-10-14 02:49:28,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:49:28,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:49:28,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165766176] [2020-10-14 02:49:28,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:49:28,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:28,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:49:28,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:49:28,862 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:49:38,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:38,867 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-14 02:49:38,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:49:38,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-14 02:49:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:38,904 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:49:38,904 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:49:38,919 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 02:49:38,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:49:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-14 02:49:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-14 02:49:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-14 02:49:39,138 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 31 [2020-10-14 02:49:39,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:39,139 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-14 02:49:39,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:49:39,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-14 02:49:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 02:49:39,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:39,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:39,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:49:39,147 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:39,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:39,147 INFO L82 PathProgramCache]: Analyzing trace with hash 270331659, now seen corresponding path program 1 times [2020-10-14 02:49:39,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:39,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348303140] [2020-10-14 02:49:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:39,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:39,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:39,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 02:49:39,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:49:39,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-10-14 02:49:39,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:39,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:49:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 02:49:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:49:40,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:40,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:40,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:40,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:40,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:49:40,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:40,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:40,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:40,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:40,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:49:40,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:40,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 02:49:40,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:40,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:49:40,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:49:40,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348303140] [2020-10-14 02:49:40,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:40,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:49:40,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542328492] [2020-10-14 02:49:40,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:49:40,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:40,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:49:40,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:49:40,222 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 5 states. [2020-10-14 02:49:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:51,321 INFO L93 Difference]: Finished difference Result 4673 states and 7281 transitions. [2020-10-14 02:49:51,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:49:51,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 02:49:51,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:51,353 INFO L225 Difference]: With dead ends: 4673 [2020-10-14 02:49:51,353 INFO L226 Difference]: Without dead ends: 3124 [2020-10-14 02:49:51,361 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 02:49:51,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-10-14 02:49:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3117. [2020-10-14 02:49:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2020-10-14 02:49:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4281 transitions. [2020-10-14 02:49:51,570 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4281 transitions. Word has length 106 [2020-10-14 02:49:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:51,574 INFO L479 AbstractCegarLoop]: Abstraction has 3117 states and 4281 transitions. [2020-10-14 02:49:51,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:49:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4281 transitions. [2020-10-14 02:49:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 02:49:51,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:51,593 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:51,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:49:51,594 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:51,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:51,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1580646199, now seen corresponding path program 1 times [2020-10-14 02:49:51,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:51,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075121680] [2020-10-14 02:49:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:52,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:52,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:49:52,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:49:52,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-14 02:49:52,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:52,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:52,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:52,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 02:49:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 02:49:52,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:53,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:53,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:53,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:53,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:49:53,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:53,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:53,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:53,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:53,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 02:49:53,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 02:49:53,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:53,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:53,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:49:53,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:49:53,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075121680] [2020-10-14 02:49:53,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:53,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:49:53,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095933028] [2020-10-14 02:49:53,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:49:53,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:53,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:49:53,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:49:53,229 INFO L87 Difference]: Start difference. First operand 3117 states and 4281 transitions. Second operand 5 states. [2020-10-14 02:50:04,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:04,814 INFO L93 Difference]: Finished difference Result 9349 states and 13005 transitions. [2020-10-14 02:50:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:04,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 02:50:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:04,853 INFO L225 Difference]: With dead ends: 9349 [2020-10-14 02:50:04,853 INFO L226 Difference]: Without dead ends: 6238 [2020-10-14 02:50:04,863 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 02:50:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-10-14 02:50:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6234. [2020-10-14 02:50:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6234 states. [2020-10-14 02:50:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 8312 transitions. [2020-10-14 02:50:05,041 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 8312 transitions. Word has length 112 [2020-10-14 02:50:05,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:05,042 INFO L479 AbstractCegarLoop]: Abstraction has 6234 states and 8312 transitions. [2020-10-14 02:50:05,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:50:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 8312 transitions. [2020-10-14 02:50:05,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 02:50:05,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:05,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:05,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:50:05,045 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:05,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:05,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1317078883, now seen corresponding path program 1 times [2020-10-14 02:50:05,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:05,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795880343] [2020-10-14 02:50:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:06,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:06,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 02:50:06,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:50:06,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-14 02:50:06,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:06,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 02:50:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 02:50:06,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:06,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:06,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:06,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:06,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:50:06,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:06,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:50:06,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:06,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:06,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 02:50:06,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:06,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 02:50:06,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:06,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 02:50:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:50:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:50:06,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795880343] [2020-10-14 02:50:06,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:06,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:50:06,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924783216] [2020-10-14 02:50:06,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:50:06,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:06,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:50:06,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:50:06,328 INFO L87 Difference]: Start difference. First operand 6234 states and 8312 transitions. Second operand 5 states. [2020-10-14 02:50:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:18,499 INFO L93 Difference]: Finished difference Result 18677 states and 25385 transitions. [2020-10-14 02:50:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:18,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-14 02:50:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:18,559 INFO L225 Difference]: With dead ends: 18677 [2020-10-14 02:50:18,559 INFO L226 Difference]: Without dead ends: 12449 [2020-10-14 02:50:18,576 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 02:50:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2020-10-14 02:50:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12441. [2020-10-14 02:50:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12441 states. [2020-10-14 02:50:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12441 states to 12441 states and 16226 transitions. [2020-10-14 02:50:18,904 INFO L78 Accepts]: Start accepts. Automaton has 12441 states and 16226 transitions. Word has length 118 [2020-10-14 02:50:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:18,906 INFO L479 AbstractCegarLoop]: Abstraction has 12441 states and 16226 transitions. [2020-10-14 02:50:18,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:50:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 12441 states and 16226 transitions. [2020-10-14 02:50:18,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 02:50:18,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:18,915 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:50:18,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:50:18,915 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:18,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:18,916 INFO L82 PathProgramCache]: Analyzing trace with hash -515432282, now seen corresponding path program 1 times [2020-10-14 02:50:18,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:18,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051566332] [2020-10-14 02:50:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:18,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:19,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:22,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:22,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 02:50:22,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:50:22,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3684 [2020-10-14 02:50:22,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:22,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 02:50:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 02:50:22,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:50:22,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:22,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:22,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:22,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:22,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:22,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:50:22,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:22,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:22,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:22,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:22,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 02:50:22,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 02:50:22,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:22,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:50:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 02:50:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:23,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:23,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 02:50:23,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 02:50:23,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:23,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:50:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 02:50:23,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:50:23,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051566332] [2020-10-14 02:50:23,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:23,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:50:23,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157498696] [2020-10-14 02:50:23,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:50:23,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:23,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:50:23,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:50:23,246 INFO L87 Difference]: Start difference. First operand 12441 states and 16226 transitions. Second operand 7 states. [2020-10-14 02:50:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:46,027 INFO L93 Difference]: Finished difference Result 46057 states and 64451 transitions. [2020-10-14 02:50:46,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:50:46,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-14 02:50:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:46,181 INFO L225 Difference]: With dead ends: 46057 [2020-10-14 02:50:46,181 INFO L226 Difference]: Without dead ends: 33622 [2020-10-14 02:50:46,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:50:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33622 states. [2020-10-14 02:50:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33622 to 32667. [2020-10-14 02:50:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32667 states. [2020-10-14 02:50:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32667 states to 32667 states and 41661 transitions. [2020-10-14 02:50:47,171 INFO L78 Accepts]: Start accepts. Automaton has 32667 states and 41661 transitions. Word has length 203 [2020-10-14 02:50:47,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:47,172 INFO L479 AbstractCegarLoop]: Abstraction has 32667 states and 41661 transitions. [2020-10-14 02:50:47,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:50:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 32667 states and 41661 transitions. [2020-10-14 02:50:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 02:50:47,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:47,178 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:50:47,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:50:47,179 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:47,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:47,179 INFO L82 PathProgramCache]: Analyzing trace with hash 363887866, now seen corresponding path program 1 times [2020-10-14 02:50:47,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:47,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549814496] [2020-10-14 02:50:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:47,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:51,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:52,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:52,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 02:50:52,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:50:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 02:50:52,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:52,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:52,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 02:50:52,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 02:50:52,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:50:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:52,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:52,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:52,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:52,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:52,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:50:52,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:52,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:52,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:52,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:52,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 02:50:52,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 02:50:52,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:52,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 02:50:52,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 02:50:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:52,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:52,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:52,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 02:50:52,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:52,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 02:50:52,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:52,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:50:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 02:50:52,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:50:52,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549814496] [2020-10-14 02:50:52,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:52,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:50:52,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569898926] [2020-10-14 02:50:52,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:50:52,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:52,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:50:52,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:50:52,729 INFO L87 Difference]: Start difference. First operand 32667 states and 41661 transitions. Second operand 7 states. [2020-10-14 02:51:16,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:16,639 INFO L93 Difference]: Finished difference Result 89357 states and 121919 transitions. [2020-10-14 02:51:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:51:16,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-14 02:51:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:16,955 INFO L225 Difference]: With dead ends: 89357 [2020-10-14 02:51:16,955 INFO L226 Difference]: Without dead ends: 56692 [2020-10-14 02:51:17,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:51:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56692 states. [2020-10-14 02:51:18,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56692 to 54307. [2020-10-14 02:51:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54307 states. [2020-10-14 02:51:18,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54307 states to 54307 states and 72711 transitions. [2020-10-14 02:51:18,818 INFO L78 Accepts]: Start accepts. Automaton has 54307 states and 72711 transitions. Word has length 209 [2020-10-14 02:51:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:18,819 INFO L479 AbstractCegarLoop]: Abstraction has 54307 states and 72711 transitions. [2020-10-14 02:51:18,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:51:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 54307 states and 72711 transitions. [2020-10-14 02:51:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 02:51:18,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:18,829 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:51:18,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:51:18,829 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:18,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:18,830 INFO L82 PathProgramCache]: Analyzing trace with hash 670985355, now seen corresponding path program 1 times [2020-10-14 02:51:18,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:18,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341297700] [2020-10-14 02:51:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:18,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:19,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:19,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:19,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:20,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:20,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 02:51:20,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:51:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-14 02:51:20,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:20,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:51:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 02:51:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:20,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:20,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:20,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:20,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:20,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:20,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:51:20,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:20,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:20,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:20,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:20,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:20,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:20,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:20,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:51:20,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:20,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-14 02:51:20,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:20,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:51:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 02:51:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:21,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:21,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 02:51:21,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 02:51:21,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:21,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:51:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 02:51:21,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:51:21,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341297700] [2020-10-14 02:51:21,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:21,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:51:21,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883631275] [2020-10-14 02:51:21,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:51:21,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:21,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:51:21,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:51:21,348 INFO L87 Difference]: Start difference. First operand 54307 states and 72711 transitions. Second operand 7 states. [2020-10-14 02:51:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:43,551 INFO L93 Difference]: Finished difference Result 132451 states and 187581 transitions. [2020-10-14 02:51:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:51:43,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-14 02:51:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:44,029 INFO L225 Difference]: With dead ends: 132451 [2020-10-14 02:51:44,029 INFO L226 Difference]: Without dead ends: 74315 [2020-10-14 02:51:44,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:51:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74315 states. [2020-10-14 02:51:47,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74315 to 66307. [2020-10-14 02:51:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66307 states. [2020-10-14 02:51:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66307 states to 66307 states and 87633 transitions. [2020-10-14 02:51:47,704 INFO L78 Accepts]: Start accepts. Automaton has 66307 states and 87633 transitions. Word has length 220 [2020-10-14 02:51:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:47,705 INFO L479 AbstractCegarLoop]: Abstraction has 66307 states and 87633 transitions. [2020-10-14 02:51:47,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:51:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 66307 states and 87633 transitions. [2020-10-14 02:51:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 02:51:47,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:47,716 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:51:47,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:51:47,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:47,717 INFO L82 PathProgramCache]: Analyzing trace with hash -838607414, now seen corresponding path program 1 times [2020-10-14 02:51:47,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:47,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267851063] [2020-10-14 02:51:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:47,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:47,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:49,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:51,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:51,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-14 02:51:51,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:51:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4165 [2020-10-14 02:51:51,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:51,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 02:51:51,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 02:51:51,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:52,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:52,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:52,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:51:52,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:52,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:52,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:52,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:52,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:52,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:52,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:52,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:52,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 02:51:52,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:52,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 02:51:52,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:52,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:52,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 02:51:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 02:51:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:52,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:52,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:52,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:51:52,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 02:51:52,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:52,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:51:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 02:51:52,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:51:52,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267851063] [2020-10-14 02:51:52,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:52,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:51:52,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945380994] [2020-10-14 02:51:52,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:51:52,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:52,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:51:52,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:51:52,723 INFO L87 Difference]: Start difference. First operand 66307 states and 87633 transitions. Second operand 7 states. [2020-10-14 02:52:14,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:14,590 INFO L93 Difference]: Finished difference Result 151618 states and 210179 transitions. [2020-10-14 02:52:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:52:14,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-14 02:52:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:14,987 INFO L225 Difference]: With dead ends: 151618 [2020-10-14 02:52:14,988 INFO L226 Difference]: Without dead ends: 86084 [2020-10-14 02:52:15,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:52:15,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86084 states. [2020-10-14 02:52:16,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86084 to 83607. [2020-10-14 02:52:16,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83607 states. [2020-10-14 02:52:16,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83607 states to 83607 states and 108949 transitions. [2020-10-14 02:52:16,984 INFO L78 Accepts]: Start accepts. Automaton has 83607 states and 108949 transitions. Word has length 249 [2020-10-14 02:52:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:16,985 INFO L479 AbstractCegarLoop]: Abstraction has 83607 states and 108949 transitions. [2020-10-14 02:52:16,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:52:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 83607 states and 108949 transitions. [2020-10-14 02:52:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 02:52:16,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:16,998 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:52:16,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:52:16,999 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:16,999 INFO L82 PathProgramCache]: Analyzing trace with hash 945918087, now seen corresponding path program 1 times [2020-10-14 02:52:17,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:17,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862586952] [2020-10-14 02:52:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:20,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:20,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-14 02:52:20,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:52:20,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3819 [2020-10-14 02:52:20,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:20,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 02:52:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 02:52:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:21,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:21,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:21,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:21,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:52:21,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:21,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:21,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:21,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:21,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:52:21,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:21,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 02:52:21,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:21,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 02:52:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 02:52:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:21,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:21,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 02:52:21,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 02:52:21,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:21,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:52:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 02:52:21,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:52:21,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862586952] [2020-10-14 02:52:21,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:21,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:52:21,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398128207] [2020-10-14 02:52:21,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:52:21,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:21,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:52:21,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:52:21,539 INFO L87 Difference]: Start difference. First operand 83607 states and 108949 transitions. Second operand 7 states. [2020-10-14 02:52:44,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:44,739 INFO L93 Difference]: Finished difference Result 171031 states and 228377 transitions. [2020-10-14 02:52:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:52:44,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-14 02:52:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:45,118 INFO L225 Difference]: With dead ends: 171031 [2020-10-14 02:52:45,118 INFO L226 Difference]: Without dead ends: 88229 [2020-10-14 02:52:45,268 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 02:52:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88229 states. [2020-10-14 02:52:49,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88229 to 87125. [2020-10-14 02:52:49,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87125 states. [2020-10-14 02:52:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87125 states to 87125 states and 113194 transitions. [2020-10-14 02:52:50,234 INFO L78 Accepts]: Start accepts. Automaton has 87125 states and 113194 transitions. Word has length 270 [2020-10-14 02:52:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:50,236 INFO L479 AbstractCegarLoop]: Abstraction has 87125 states and 113194 transitions. [2020-10-14 02:52:50,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:52:50,236 INFO L276 IsEmpty]: Start isEmpty. Operand 87125 states and 113194 transitions. [2020-10-14 02:52:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-14 02:52:50,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:50,265 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:52:50,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:52:50,266 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:50,267 INFO L82 PathProgramCache]: Analyzing trace with hash 652557494, now seen corresponding path program 1 times [2020-10-14 02:52:50,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:50,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850406619] [2020-10-14 02:52:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:50,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:51,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking...