/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/Problem06_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:35:33,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:35:33,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:35:33,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:35:33,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:35:33,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:35:33,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:35:33,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:35:33,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:35:33,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:35:33,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:35:33,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:35:33,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:35:33,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:35:33,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:35:33,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:35:33,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:35:33,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:35:33,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:35:33,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:35:33,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:35:33,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:35:33,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:35:33,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:35:33,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:35:33,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:35:33,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:35:33,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:35:33,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:35:33,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:35:33,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:35:33,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:35:33,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:35:33,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:35:33,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:35:33,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:35:33,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:35:33,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:35:33,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:35:33,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:35:33,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:35:33,354 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 01:35:33,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:35:33,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:35:33,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:35:33,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:35:33,395 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:35:33,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:35:33,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:35:33,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:35:33,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:35:33,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:35:33,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:35:33,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:35:33,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:35:33,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:35:33,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:35:33,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:35:33,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:35:33,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:35:33,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:35:33,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:35:33,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:35:33,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:35:33,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:35:33,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:35:33,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:35:33,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:35:33,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:35:33,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:35:33,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:35:33,400 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 01:35:33,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:35:33,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:35:33,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:35:33,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:35:33,740 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:35:33,740 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label29.c [2020-10-14 01:35:33,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b6924027/a3fafc6e56684b2e816de475b8fb82e9/FLAGc1be2abba [2020-10-14 01:35:34,666 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:35:34,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label29.c [2020-10-14 01:35:34,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b6924027/a3fafc6e56684b2e816de475b8fb82e9/FLAGc1be2abba [2020-10-14 01:35:35,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b6924027/a3fafc6e56684b2e816de475b8fb82e9 [2020-10-14 01:35:35,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:35:35,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:35:35,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:35:35,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:35:35,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:35:35,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:35:35" (1/1) ... [2020-10-14 01:35:35,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92e95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:35, skipping insertion in model container [2020-10-14 01:35:35,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:35:35" (1/1) ... [2020-10-14 01:35:35,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:35:35,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:35:37,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:35:37,978 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:35:39,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:35:39,905 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:35:39,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:39 WrapperNode [2020-10-14 01:35:39,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:35:39,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:35:39,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:35:39,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:35:39,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:39" (1/1) ... [2020-10-14 01:35:39,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:39" (1/1) ... [2020-10-14 01:35:40,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:39" (1/1) ... [2020-10-14 01:35:40,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:39" (1/1) ... [2020-10-14 01:35:40,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:39" (1/1) ... [2020-10-14 01:35:40,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:39" (1/1) ... [2020-10-14 01:35:40,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:39" (1/1) ... [2020-10-14 01:35:40,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:35:40,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:35:40,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:35:40,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:35:40,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:39" (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 01:35:40,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:35:40,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:35:40,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:35:40,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:35:40,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:35:40,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:35:40,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:35:40,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:35:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:35:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:35:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:35:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:35:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:35:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:35:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:35:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:35:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:35:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:35:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:35:47,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:35:47,113 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:35:47,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:35:47 BoogieIcfgContainer [2020-10-14 01:35:47,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:35:47,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:35:47,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:35:47,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:35:47,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:35:35" (1/3) ... [2020-10-14 01:35:47,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34385d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:35:47, skipping insertion in model container [2020-10-14 01:35:47,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:35:39" (2/3) ... [2020-10-14 01:35:47,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34385d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:35:47, skipping insertion in model container [2020-10-14 01:35:47,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:35:47" (3/3) ... [2020-10-14 01:35:47,138 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label29.c [2020-10-14 01:35:47,149 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:35:47,162 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:35:47,177 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:35:47,210 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:35:47,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:35:47,210 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:35:47,210 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:35:47,211 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:35:47,211 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:35:47,211 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:35:47,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:35:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:35:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2020-10-14 01:35:47,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:35:47,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:35:47,300 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:35:47,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:35:47,307 INFO L82 PathProgramCache]: Analyzing trace with hash 781995559, now seen corresponding path program 1 times [2020-10-14 01:35:47,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:35:47,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131537248] [2020-10-14 01:35:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:35:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:51,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:53,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:53,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 980 [2020-10-14 01:35:53,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:35:53,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5242 [2020-10-14 01:35:53,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:53,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:35:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:35:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 974 [2020-10-14 01:35:53,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:35:54,869 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:35:54,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:35:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:54,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:54,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:54,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:35:54,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:54,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:35:54,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:54,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:35:54,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:35:54,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:35:54,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:56,974 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 01:35:56,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131537248] [2020-10-14 01:35:56,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:35:56,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:35:56,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312460092] [2020-10-14 01:35:56,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:35:56,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:35:57,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:35:57,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:35:57,004 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 01:35:57,190 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:36:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:36:10,232 INFO L93 Difference]: Finished difference Result 3765 states and 7006 transitions. [2020-10-14 01:36:10,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:36:10,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 964 [2020-10-14 01:36:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:36:10,282 INFO L225 Difference]: With dead ends: 3765 [2020-10-14 01:36:10,282 INFO L226 Difference]: Without dead ends: 2386 [2020-10-14 01:36:10,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:36:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2020-10-14 01:36:10,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2373. [2020-10-14 01:36:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-14 01:36:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3971 transitions. [2020-10-14 01:36:10,483 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3971 transitions. Word has length 964 [2020-10-14 01:36:10,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:36:10,487 INFO L479 AbstractCegarLoop]: Abstraction has 2373 states and 3971 transitions. [2020-10-14 01:36:10,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:36:10,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3971 transitions. [2020-10-14 01:36:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-14 01:36:10,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:36:10,527 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:10,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:36:10,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:36:10,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:36:10,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1561135690, now seen corresponding path program 1 times [2020-10-14 01:36:10,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:36:10,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390489303] [2020-10-14 01:36:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:36:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:11,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:16,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:16,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-14 01:36:16,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:36:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5179 [2020-10-14 01:36:16,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:16,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:36:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:36:16,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:36:16,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:36:16,483 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:36:16,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:36:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:16,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:16,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:36:16,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:36:16,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:16,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:36:16,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:36:16,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:36:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:36:16,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:36:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:16,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:16,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:36:16,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 01:36:16,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:16,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:36:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:36:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:36:16,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:36:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:36:17,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390489303] [2020-10-14 01:36:17,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:36:17,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:36:17,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457823084] [2020-10-14 01:36:17,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:36:17,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:36:17,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:36:17,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:36:17,471 INFO L87 Difference]: Start difference. First operand 2373 states and 3971 transitions. Second operand 7 states. [2020-10-14 01:36:17,622 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:36:18,641 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:36:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:36:34,286 INFO L93 Difference]: Finished difference Result 7013 states and 11833 transitions. [2020-10-14 01:36:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:36:34,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 976 [2020-10-14 01:36:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:36:34,314 INFO L225 Difference]: With dead ends: 7013 [2020-10-14 01:36:34,315 INFO L226 Difference]: Without dead ends: 4646 [2020-10-14 01:36:34,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:36:34,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2020-10-14 01:36:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 4580. [2020-10-14 01:36:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4580 states. [2020-10-14 01:36:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 7050 transitions. [2020-10-14 01:36:34,467 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 7050 transitions. Word has length 976 [2020-10-14 01:36:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:36:34,467 INFO L479 AbstractCegarLoop]: Abstraction has 4580 states and 7050 transitions. [2020-10-14 01:36:34,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:36:34,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 7050 transitions. [2020-10-14 01:36:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-14 01:36:34,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:36:34,489 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:34,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:36:34,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:36:34,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:36:34,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1186235074, now seen corresponding path program 1 times [2020-10-14 01:36:34,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:36:34,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330299508] [2020-10-14 01:36:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:36:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:39,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:39,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-14 01:36:39,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:36:39,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-14 01:36:39,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:39,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:36:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:36:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:36:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:36:40,026 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:36:40,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:36:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:40,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:40,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:40,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:36:40,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:36:40,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:40,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:36:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:36:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:36:40,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:36:40,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:36:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:40,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:40,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:40,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:36:40,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:40,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 01:36:40,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:40,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:40,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:36:40,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:36:40,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:36:40,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:36:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:36:40,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330299508] [2020-10-14 01:36:40,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:36:40,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:36:40,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087668450] [2020-10-14 01:36:40,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:36:40,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:36:40,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:36:40,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:36:40,732 INFO L87 Difference]: Start difference. First operand 4580 states and 7050 transitions. Second operand 7 states. [2020-10-14 01:36:40,874 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:36:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:36:58,036 INFO L93 Difference]: Finished difference Result 13834 states and 22238 transitions. [2020-10-14 01:36:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:36:58,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 980 [2020-10-14 01:36:58,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:36:58,091 INFO L225 Difference]: With dead ends: 13834 [2020-10-14 01:36:58,091 INFO L226 Difference]: Without dead ends: 9260 [2020-10-14 01:36:58,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:36:58,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9260 states. [2020-10-14 01:36:58,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9260 to 9036. [2020-10-14 01:36:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9036 states. [2020-10-14 01:36:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9036 states to 9036 states and 13160 transitions. [2020-10-14 01:36:58,393 INFO L78 Accepts]: Start accepts. Automaton has 9036 states and 13160 transitions. Word has length 980 [2020-10-14 01:36:58,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:36:58,394 INFO L479 AbstractCegarLoop]: Abstraction has 9036 states and 13160 transitions. [2020-10-14 01:36:58,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:36:58,394 INFO L276 IsEmpty]: Start isEmpty. Operand 9036 states and 13160 transitions. [2020-10-14 01:36:58,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-14 01:36:58,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:36:58,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:58,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:36:58,467 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:36:58,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:36:58,477 INFO L82 PathProgramCache]: Analyzing trace with hash 779008214, now seen corresponding path program 1 times [2020-10-14 01:36:58,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:36:58,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414970793] [2020-10-14 01:36:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:36:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:58,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:58,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:03,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:03,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1016 [2020-10-14 01:37:03,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:37:03,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5202 [2020-10-14 01:37:03,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:03,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:37:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 01:37:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:37:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:37:04,224 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:37:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:37:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:04,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:04,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:37:04,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:37:04,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:37:04,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:04,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:37:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:37:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:37:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:37:04,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:37:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:04,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:04,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:04,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 01:37:04,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:37:04,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 01:37:04,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:04,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:04,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:37:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:37:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:37:04,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:37:04,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 01:37:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:04,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:04,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:37:04,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:37:04,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 01:37:04,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:04,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:37:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:37:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:37:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:37:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:37:05,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414970793] [2020-10-14 01:37:05,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:37:05,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:37:05,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252496772] [2020-10-14 01:37:05,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:37:05,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:37:05,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:37:05,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:37:05,133 INFO L87 Difference]: Start difference. First operand 9036 states and 13160 transitions. Second operand 8 states. [2020-10-14 01:37:05,442 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:37:05,636 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:37:06,119 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:37:32,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:37:32,977 INFO L93 Difference]: Finished difference Result 27008 states and 40867 transitions. [2020-10-14 01:37:32,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 01:37:32,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 996 [2020-10-14 01:37:32,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:37:33,069 INFO L225 Difference]: With dead ends: 27008 [2020-10-14 01:37:33,069 INFO L226 Difference]: Without dead ends: 17978 [2020-10-14 01:37:33,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:37:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17978 states. [2020-10-14 01:37:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17978 to 17916. [2020-10-14 01:37:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17916 states. [2020-10-14 01:37:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17916 states to 17916 states and 24852 transitions. [2020-10-14 01:37:33,826 INFO L78 Accepts]: Start accepts. Automaton has 17916 states and 24852 transitions. Word has length 996 [2020-10-14 01:37:33,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:37:33,826 INFO L479 AbstractCegarLoop]: Abstraction has 17916 states and 24852 transitions. [2020-10-14 01:37:33,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:37:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 17916 states and 24852 transitions. [2020-10-14 01:37:33,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2020-10-14 01:37:33,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:37:33,902 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:37:33,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:37:33,903 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:37:33,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:37:33,904 INFO L82 PathProgramCache]: Analyzing trace with hash 457444174, now seen corresponding path program 1 times [2020-10-14 01:37:33,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:37:33,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598585283] [2020-10-14 01:37:33,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:37:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:34,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:39,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:39,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1020 [2020-10-14 01:37:39,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:37:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-14 01:37:39,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:39,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:37:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 01:37:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:37:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:37:39,352 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:37:39,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:37:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:39,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:39,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:37:39,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:37:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:37:39,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:39,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:37:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:37:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:37:39,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:37:39,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:37:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:39,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:39,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 01:37:39,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:37:39,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:37:39,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:39,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:37:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:37:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:37:39,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:37:39,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 01:37:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:37:39,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:37:39,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:37:39,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:37:39,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:37:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 01:37:39,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:37:39,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:37:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:37:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:37:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:37:39,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:37:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:37:40,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598585283] [2020-10-14 01:37:40,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:37:40,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:37:40,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689935197] [2020-10-14 01:37:40,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:37:40,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:37:40,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:37:40,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:37:40,508 INFO L87 Difference]: Start difference. First operand 17916 states and 24852 transitions. Second operand 7 states. [2020-10-14 01:37:40,776 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:37:41,168 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:37:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:37:59,132 INFO L93 Difference]: Finished difference Result 54877 states and 91958 transitions. [2020-10-14 01:37:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:37:59,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1000 [2020-10-14 01:37:59,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:37:59,379 INFO L225 Difference]: With dead ends: 54877 [2020-10-14 01:37:59,379 INFO L226 Difference]: Without dead ends: 36967 [2020-10-14 01:37:59,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:37:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36967 states. [2020-10-14 01:38:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36967 to 36137. [2020-10-14 01:38:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36137 states. [2020-10-14 01:38:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36137 states to 36137 states and 49757 transitions. [2020-10-14 01:38:00,884 INFO L78 Accepts]: Start accepts. Automaton has 36137 states and 49757 transitions. Word has length 1000 [2020-10-14 01:38:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:38:00,885 INFO L479 AbstractCegarLoop]: Abstraction has 36137 states and 49757 transitions. [2020-10-14 01:38:00,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:38:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 36137 states and 49757 transitions. [2020-10-14 01:38:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2020-10-14 01:38:01,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:38:01,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:38:01,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:38:01,017 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:38:01,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:38:01,018 INFO L82 PathProgramCache]: Analyzing trace with hash 283206587, now seen corresponding path program 1 times [2020-10-14 01:38:01,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:38:01,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617472920] [2020-10-14 01:38:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:38:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:01,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:01,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:06,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:06,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1041 [2020-10-14 01:38:06,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:38:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-14 01:38:06,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:06,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:38:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 01:38:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 01:38:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:38:06,625 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:38:06,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:38:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:06,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:06,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:38:06,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:38:06,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:38:06,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:06,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:06,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:38:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:38:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:38:06,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:38:06,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:38:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:06,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:06,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:06,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 01:38:06,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:38:06,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 01:38:06,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:06,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:38:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:38:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:38:06,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:38:06,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 01:38:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:06,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:06,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:06,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:38:06,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:38:06,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 01:38:06,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:06,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:06,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:38:06,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:38:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:38:06,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:38:06,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 01:38:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:06,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:06,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:06,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:38:06,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:38:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:38:06,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:06,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:38:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 01:38:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:38:06,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:38:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 64 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 01:38:07,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617472920] [2020-10-14 01:38:07,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:38:07,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:38:07,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613470760] [2020-10-14 01:38:07,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:38:07,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:38:07,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:38:07,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:38:07,464 INFO L87 Difference]: Start difference. First operand 36137 states and 49757 transitions. Second operand 8 states. [2020-10-14 01:38:07,597 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 01:38:07,830 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:38:10,294 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 01:38:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:38:35,137 INFO L93 Difference]: Finished difference Result 143704 states and 222212 transitions. [2020-10-14 01:38:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 01:38:35,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1019 [2020-10-14 01:38:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:38:35,624 INFO L225 Difference]: With dead ends: 143704 [2020-10-14 01:38:35,625 INFO L226 Difference]: Without dead ends: 107573 [2020-10-14 01:38:35,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:38:35,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107573 states. [2020-10-14 01:38:38,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107573 to 106955. [2020-10-14 01:38:38,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106955 states. [2020-10-14 01:38:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106955 states to 106955 states and 152431 transitions. [2020-10-14 01:38:38,329 INFO L78 Accepts]: Start accepts. Automaton has 106955 states and 152431 transitions. Word has length 1019 [2020-10-14 01:38:38,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:38:38,329 INFO L479 AbstractCegarLoop]: Abstraction has 106955 states and 152431 transitions. [2020-10-14 01:38:38,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:38:38,330 INFO L276 IsEmpty]: Start isEmpty. Operand 106955 states and 152431 transitions. [2020-10-14 01:38:41,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2020-10-14 01:38:41,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:38:41,235 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:38:41,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:38:41,235 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:38:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:38:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash -969525483, now seen corresponding path program 1 times [2020-10-14 01:38:41,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:38:41,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251342593] [2020-10-14 01:38:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:38:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:42,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:43,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:46,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:46,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1070 [2020-10-14 01:38:46,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:38:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 01:38:46,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:46,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:46,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 01:38:46,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:38:46,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 01:38:46,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:38:47,003 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:38:47,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:38:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:47,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:47,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:47,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:38:47,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:38:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:38:47,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:47,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:38:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:38:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:38:47,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:38:47,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:38:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:47,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:47,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:47,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 01:38:47,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:38:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 01:38:47,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:47,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:38:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:38:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 01:38:47,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:38:47,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 01:38:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:47,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:47,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:38:47,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:38:47,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 01:38:47,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:47,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:47,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:38:47,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:38:47,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:38:47,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:38:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 01:38:48,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251342593] [2020-10-14 01:38:48,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:38:48,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:38:48,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559512057] [2020-10-14 01:38:48,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:38:48,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:38:48,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:38:48,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:38:48,330 INFO L87 Difference]: Start difference. First operand 106955 states and 152431 transitions. Second operand 8 states. [2020-10-14 01:38:48,492 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 01:38:49,397 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 01:39:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:39:07,263 INFO L93 Difference]: Finished difference Result 269617 states and 394086 transitions. [2020-10-14 01:39:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 01:39:07,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1050 [2020-10-14 01:39:07,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:39:07,989 INFO L225 Difference]: With dead ends: 269617 [2020-10-14 01:39:07,989 INFO L226 Difference]: Without dead ends: 162668 [2020-10-14 01:39:08,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 01:39:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162668 states.