/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/Problem05_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:20:17,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:20:17,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:20:17,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:20:17,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:20:17,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:20:17,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:20:17,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:20:17,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:20:17,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:20:17,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:20:17,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:20:17,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:20:17,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:20:17,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:20:17,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:20:17,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:20:17,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:20:17,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:20:17,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:20:17,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:20:17,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:20:17,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:20:17,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:20:17,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:20:17,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:20:17,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:20:17,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:20:17,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:20:17,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:20:17,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:20:17,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:20:17,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:20:17,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:20:17,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:20:17,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:20:17,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:20:17,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:20:17,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:20:17,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:20:17,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:20:17,347 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 01:20:17,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:20:17,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:20:17,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:20:17,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:20:17,370 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:20:17,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:20:17,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:20:17,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:20:17,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:20:17,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:20:17,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:20:17,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:20:17,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:20:17,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:20:17,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:20:17,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:20:17,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:20:17,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:20:17,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:20:17,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:20:17,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:20:17,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:20:17,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:20:17,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:20:17,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:20:17,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:20:17,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:20:17,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:20:17,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:20:17,375 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 01:20:17,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:20:17,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:20:17,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:20:17,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:20:17,723 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:20:17,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label30.c [2020-10-14 01:20:17,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8706e836/29c8db3018554343bf93cda8b4223357/FLAGf5e46d8bb [2020-10-14 01:20:18,740 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:20:18,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label30.c [2020-10-14 01:20:18,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8706e836/29c8db3018554343bf93cda8b4223357/FLAGf5e46d8bb [2020-10-14 01:20:19,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8706e836/29c8db3018554343bf93cda8b4223357 [2020-10-14 01:20:19,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:20:19,163 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:20:19,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:20:19,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:20:19,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:20:19,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:20:19" (1/1) ... [2020-10-14 01:20:19,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530cd126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:19, skipping insertion in model container [2020-10-14 01:20:19,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:20:19" (1/1) ... [2020-10-14 01:20:19,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:20:19,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:20:22,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:20:22,021 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:20:23,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:20:23,373 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:20:23,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:23 WrapperNode [2020-10-14 01:20:23,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:20:23,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:20:23,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:20:23,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:20:23,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:23" (1/1) ... [2020-10-14 01:20:23,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:23" (1/1) ... [2020-10-14 01:20:23,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:23" (1/1) ... [2020-10-14 01:20:23,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:23" (1/1) ... [2020-10-14 01:20:23,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:23" (1/1) ... [2020-10-14 01:20:23,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:23" (1/1) ... [2020-10-14 01:20:23,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:23" (1/1) ... [2020-10-14 01:20:23,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:20:23,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:20:23,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:20:23,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:20:23,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:23" (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 01:20:23,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:20:23,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:20:23,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:20:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:20:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:20:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:20:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:20:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 01:20:23,972 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 01:20:23,972 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 01:20:23,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:20:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:20:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:20:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:20:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:20:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:20:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 01:20:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 01:20:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 01:20:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:20:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:20:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:20:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:20:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:20:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:20:32,178 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:20:32,178 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:20:32,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:20:32 BoogieIcfgContainer [2020-10-14 01:20:32,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:20:32,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:20:32,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:20:32,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:20:32,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:20:19" (1/3) ... [2020-10-14 01:20:32,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1701e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:20:32, skipping insertion in model container [2020-10-14 01:20:32,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:20:23" (2/3) ... [2020-10-14 01:20:32,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1701e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:20:32, skipping insertion in model container [2020-10-14 01:20:32,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:20:32" (3/3) ... [2020-10-14 01:20:32,208 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label30.c [2020-10-14 01:20:32,220 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:20:32,229 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:20:32,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:20:32,273 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:20:32,273 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:20:32,273 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:20:32,273 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:20:32,273 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:20:32,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:20:32,274 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:20:32,274 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:20:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 01:20:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1675 [2020-10-14 01:20:32,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:20:32,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:32,427 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:20:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:20:32,433 INFO L82 PathProgramCache]: Analyzing trace with hash 205409585, now seen corresponding path program 1 times [2020-10-14 01:20:32,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:20:32,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295027008] [2020-10-14 01:20:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:20:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:33,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:38,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:38,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1696 [2020-10-14 01:20:38,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:20:38,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-14 01:20:38,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:38,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 01:20:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:20:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1690 [2020-10-14 01:20:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:20:40,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:20:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:40,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:40,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:20:40,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:20:40,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:20:40,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:40,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:20:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:20:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:20:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:20:43,481 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 01:20:43,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295027008] [2020-10-14 01:20:43,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:20:43,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:20:43,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021001359] [2020-10-14 01:20:43,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:20:43,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:20:43,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:20:43,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:20:43,516 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-14 01:21:08,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:21:08,848 INFO L93 Difference]: Finished difference Result 8125 states and 15405 transitions. [2020-10-14 01:21:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:21:08,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1674 [2020-10-14 01:21:08,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:21:08,919 INFO L225 Difference]: With dead ends: 8125 [2020-10-14 01:21:08,920 INFO L226 Difference]: Without dead ends: 5835 [2020-10-14 01:21:08,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:21:08,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2020-10-14 01:21:09,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5801. [2020-10-14 01:21:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-10-14 01:21:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9384 transitions. [2020-10-14 01:21:09,178 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9384 transitions. Word has length 1674 [2020-10-14 01:21:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:21:09,183 INFO L479 AbstractCegarLoop]: Abstraction has 5801 states and 9384 transitions. [2020-10-14 01:21:09,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:21:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9384 transitions. [2020-10-14 01:21:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1699 [2020-10-14 01:21:09,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:21:09,310 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:09,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:21:09,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:21:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:21:09,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1997221346, now seen corresponding path program 1 times [2020-10-14 01:21:09,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:21:09,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758403231] [2020-10-14 01:21:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:21:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:21:09,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:14,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:21:14,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1724 [2020-10-14 01:21:14,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:21:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-14 01:21:14,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:21:14,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:21:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:21:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 01:21:14,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:21:14,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:21:15,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:21:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:21:15,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:15,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:21:15,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:21:15,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:21:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:21:15,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:21:15,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:21:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:21:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:21:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:21:15,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:21:15,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:21:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:21:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:15,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:21:15,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:21:15,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:21:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:21:15,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:21:15,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:21:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:21:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:21:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 01:21:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:21:15,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 01:21:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:21:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:15,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:21:15,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:21:15,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:21:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 01:21:15,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:21:15,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:21:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:21:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:21:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:21:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:21:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:21:16,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758403231] [2020-10-14 01:21:16,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:21:16,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:21:16,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624934901] [2020-10-14 01:21:16,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:21:16,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:21:16,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:21:16,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:21:16,713 INFO L87 Difference]: Start difference. First operand 5801 states and 9384 transitions. Second operand 7 states. [2020-10-14 01:21:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:21:40,691 INFO L93 Difference]: Finished difference Result 17256 states and 28379 transitions. [2020-10-14 01:21:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:21:40,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1698 [2020-10-14 01:21:40,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:21:40,753 INFO L225 Difference]: With dead ends: 17256 [2020-10-14 01:21:40,753 INFO L226 Difference]: Without dead ends: 11461 [2020-10-14 01:21:40,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:21:40,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11461 states. [2020-10-14 01:21:41,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11461 to 11259. [2020-10-14 01:21:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11259 states. [2020-10-14 01:21:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11259 states to 11259 states and 16631 transitions. [2020-10-14 01:21:41,189 INFO L78 Accepts]: Start accepts. Automaton has 11259 states and 16631 transitions. Word has length 1698 [2020-10-14 01:21:41,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:21:41,191 INFO L479 AbstractCegarLoop]: Abstraction has 11259 states and 16631 transitions. [2020-10-14 01:21:41,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:21:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 11259 states and 16631 transitions. [2020-10-14 01:21:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2020-10-14 01:21:41,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:21:41,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:41,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:21:41,389 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:21:41,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:21:41,391 INFO L82 PathProgramCache]: Analyzing trace with hash 520943852, now seen corresponding path program 1 times [2020-10-14 01:21:41,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:21:41,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840405941] [2020-10-14 01:21:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:21:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:21:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:41,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:42,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:46,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:21:46,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1733 [2020-10-14 01:21:46,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:21:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 01:21:46,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:21:46,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:21:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:21:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 01:21:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:21:46,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:21:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:21:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:21:46,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:46,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:21:46,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:21:46,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:21:46,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:21:46,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:21:46,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:21:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:21:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:21:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:21:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:21:47,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:21:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:21:47,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:47,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:21:47,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:21:47,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:21:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:21:47,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:21:47,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:21:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:21:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:21:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:21:47,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:21:47,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 01:21:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:21:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:21:47,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:21:47,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 01:21:47,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:21:47,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:21:47,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:21:47,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:21:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:21:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 01:21:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:21:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:21:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 01:21:48,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840405941] [2020-10-14 01:21:48,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:21:48,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 01:21:48,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977184626] [2020-10-14 01:21:48,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:21:48,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:21:48,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:21:48,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:21:48,127 INFO L87 Difference]: Start difference. First operand 11259 states and 16631 transitions. Second operand 5 states. [2020-10-14 01:22:11,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:22:11,329 INFO L93 Difference]: Finished difference Result 33307 states and 50643 transitions. [2020-10-14 01:22:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:22:11,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1707 [2020-10-14 01:22:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:22:11,403 INFO L225 Difference]: With dead ends: 33307 [2020-10-14 01:22:11,404 INFO L226 Difference]: Without dead ends: 22054 [2020-10-14 01:22:11,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:22:11,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22054 states. [2020-10-14 01:22:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22054 to 21947. [2020-10-14 01:22:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21947 states. [2020-10-14 01:22:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21947 states to 21947 states and 31455 transitions. [2020-10-14 01:22:11,949 INFO L78 Accepts]: Start accepts. Automaton has 21947 states and 31455 transitions. Word has length 1707 [2020-10-14 01:22:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:22:11,950 INFO L479 AbstractCegarLoop]: Abstraction has 21947 states and 31455 transitions. [2020-10-14 01:22:11,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:22:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 21947 states and 31455 transitions. [2020-10-14 01:22:12,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2020-10-14 01:22:12,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:22:12,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:12,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:22:12,049 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:22:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:22:12,050 INFO L82 PathProgramCache]: Analyzing trace with hash -756114688, now seen corresponding path program 1 times [2020-10-14 01:22:12,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:22:12,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784007334] [2020-10-14 01:22:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:22:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:22:12,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:17,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:22:17,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1738 [2020-10-14 01:22:17,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:22:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 01:22:17,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:22:17,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:22:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:22:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:22:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 01:22:17,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:22:17,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:22:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:22:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:17,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:22:17,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:22:17,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:22:17,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:22:17,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:22:17,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:22:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:22:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:22:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:22:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:22:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:22:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:22:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:17,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:22:17,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 01:22:17,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:22:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 01:22:17,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:22:17,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:22:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:22:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:22:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 01:22:17,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:22:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:22:19,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784007334] [2020-10-14 01:22:19,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:22:19,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:22:19,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130700052] [2020-10-14 01:22:19,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:22:19,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:22:19,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:22:19,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:22:19,037 INFO L87 Difference]: Start difference. First operand 21947 states and 31455 transitions. Second operand 8 states. [2020-10-14 01:22:52,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:22:52,523 INFO L93 Difference]: Finished difference Result 87212 states and 136144 transitions. [2020-10-14 01:22:52,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:22:52,525 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1714 [2020-10-14 01:22:52,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:22:52,759 INFO L225 Difference]: With dead ends: 87212 [2020-10-14 01:22:52,759 INFO L226 Difference]: Without dead ends: 65271 [2020-10-14 01:22:52,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:22:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65271 states. [2020-10-14 01:22:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65271 to 65224. [2020-10-14 01:22:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65224 states. [2020-10-14 01:22:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65224 states to 65224 states and 97752 transitions. [2020-10-14 01:22:54,402 INFO L78 Accepts]: Start accepts. Automaton has 65224 states and 97752 transitions. Word has length 1714 [2020-10-14 01:22:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:22:54,402 INFO L479 AbstractCegarLoop]: Abstraction has 65224 states and 97752 transitions. [2020-10-14 01:22:54,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:22:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 65224 states and 97752 transitions. [2020-10-14 01:22:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2020-10-14 01:22:56,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:22:56,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:56,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:22:56,623 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:22:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:22:56,624 INFO L82 PathProgramCache]: Analyzing trace with hash -578875080, now seen corresponding path program 1 times [2020-10-14 01:22:56,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:22:56,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754402037] [2020-10-14 01:22:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:22:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:22:57,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:22:58,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:02,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:02,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1739 [2020-10-14 01:23:02,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:23:02,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-14 01:23:02,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:02,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:23:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:23:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 01:23:02,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:23:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:23:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:02,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:02,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:02,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:23:02,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:23:02,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:02,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:23:02,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:23:02,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:23:02,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 01:23:02,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:23:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:02,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:02,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 01:23:02,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:02,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 01:23:02,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:02,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:23:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:23:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 01:23:02,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:23:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:23:03,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754402037] [2020-10-14 01:23:03,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:23:03,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:23:03,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290583806] [2020-10-14 01:23:03,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:23:03,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:23:03,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:23:03,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:23:03,888 INFO L87 Difference]: Start difference. First operand 65224 states and 97752 transitions. Second operand 7 states. [2020-10-14 01:23:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:23:28,676 INFO L93 Difference]: Finished difference Result 195615 states and 324684 transitions. [2020-10-14 01:23:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:23:28,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1715 [2020-10-14 01:23:28,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:23:29,233 INFO L225 Difference]: With dead ends: 195615 [2020-10-14 01:23:29,233 INFO L226 Difference]: Without dead ends: 130397 [2020-10-14 01:23:29,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:23:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130397 states. [2020-10-14 01:23:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130397 to 130175. [2020-10-14 01:23:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130175 states. [2020-10-14 01:23:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130175 states to 130175 states and 199372 transitions. [2020-10-14 01:23:32,510 INFO L78 Accepts]: Start accepts. Automaton has 130175 states and 199372 transitions. Word has length 1715 [2020-10-14 01:23:32,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:23:32,511 INFO L479 AbstractCegarLoop]: Abstraction has 130175 states and 199372 transitions. [2020-10-14 01:23:32,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:23:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 130175 states and 199372 transitions. [2020-10-14 01:23:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1725 [2020-10-14 01:23:32,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:23:32,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:32,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:23:32,926 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:23:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:23:32,927 INFO L82 PathProgramCache]: Analyzing trace with hash 2139716588, now seen corresponding path program 1 times [2020-10-14 01:23:32,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:23:32,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670493180] [2020-10-14 01:23:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:23:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:33,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:37,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:38,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:38,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1748 [2020-10-14 01:23:38,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:23:38,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-14 01:23:38,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:38,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:23:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:23:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 01:23:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:23:38,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:23:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:38,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:38,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:23:38,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:23:38,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:38,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:23:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:23:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:23:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:23:38,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:23:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:38,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:38,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:23:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 01:23:38,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:38,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:23:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:23:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 01:23:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:23:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:23:39,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670493180] [2020-10-14 01:23:39,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:23:39,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:23:39,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6355179] [2020-10-14 01:23:39,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:23:39,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:23:39,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:23:39,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:23:39,726 INFO L87 Difference]: Start difference. First operand 130175 states and 199372 transitions. Second operand 7 states.