/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:50:37,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:50:37,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:50:37,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:50:37,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:50:37,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:50:37,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:50:37,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:50:37,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:50:37,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:50:37,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:50:37,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:50:37,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:50:37,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:50:37,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:50:37,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:50:37,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:50:37,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:50:37,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:50:37,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:50:37,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:50:37,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:50:37,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:50:37,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:50:37,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:50:37,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:50:37,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:50:37,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:50:37,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:50:37,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:50:37,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:50:37,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:50:37,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:50:37,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:50:37,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:50:37,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:50:37,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:50:37,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:50:37,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:50:37,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:50:37,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:50:37,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:50:37,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:50:37,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:50:37,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:50:37,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:50:37,395 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:50:37,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:50:37,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:50:37,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:50:37,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:50:37,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:50:37,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:50:37,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:50:37,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:50:37,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:50:37,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:50:37,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:50:37,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:50:37,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:50:37,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:50:37,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:50:37,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:50:37,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:50:37,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:50:37,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:50:37,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:50:37,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:50:37,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:50:37,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:50:37,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:50:37,402 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:50:37,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:50:37,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:50:37,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:50:37,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:50:37,703 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:50:37,704 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label21.c [2020-10-13 06:50:37,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d44d5c83f/8bdc00c404dd4e7f9e3a211edf1b9cd5/FLAG662b51977 [2020-10-13 06:50:38,675 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:50:38,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label21.c [2020-10-13 06:50:38,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d44d5c83f/8bdc00c404dd4e7f9e3a211edf1b9cd5/FLAG662b51977 [2020-10-13 06:50:39,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d44d5c83f/8bdc00c404dd4e7f9e3a211edf1b9cd5 [2020-10-13 06:50:39,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:50:39,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:50:39,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:50:39,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:50:39,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:50:39,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:50:39" (1/1) ... [2020-10-13 06:50:39,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db9ac37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:39, skipping insertion in model container [2020-10-13 06:50:39,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:50:39" (1/1) ... [2020-10-13 06:50:39,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:50:39,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:50:41,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:50:41,989 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:50:43,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:50:43,253 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:50:43,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:43 WrapperNode [2020-10-13 06:50:43,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:50:43,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:50:43,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:50:43,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:50:43,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:43" (1/1) ... [2020-10-13 06:50:43,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:43" (1/1) ... [2020-10-13 06:50:43,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:43" (1/1) ... [2020-10-13 06:50:43,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:43" (1/1) ... [2020-10-13 06:50:43,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:43" (1/1) ... [2020-10-13 06:50:43,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:43" (1/1) ... [2020-10-13 06:50:43,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:43" (1/1) ... [2020-10-13 06:50:43,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:50:43,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:50:43,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:50:43,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:50:43,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:43" (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 [2020-10-13 06:50:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:50:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:50:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:50:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:50:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:50:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:50:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 06:50:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 06:50:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-13 06:50:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-13 06:50:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:50:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:50:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:50:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:50:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:50:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 06:50:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 06:50:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-13 06:50:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-13 06:50:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:50:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:50:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:50:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:50:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:50:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:50:52,085 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:50:52,085 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:50:52,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:50:52 BoogieIcfgContainer [2020-10-13 06:50:52,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:50:52,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:50:52,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:50:52,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:50:52,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:50:39" (1/3) ... [2020-10-13 06:50:52,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f20ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:50:52, skipping insertion in model container [2020-10-13 06:50:52,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:43" (2/3) ... [2020-10-13 06:50:52,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f20ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:50:52, skipping insertion in model container [2020-10-13 06:50:52,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:50:52" (3/3) ... [2020-10-13 06:50:52,112 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label21.c [2020-10-13 06:50:52,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:50:52,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:50:52,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:50:52,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:50:52,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:50:52,178 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:50:52,178 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:50:52,179 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:50:52,179 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:50:52,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:50:52,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:50:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-13 06:50:52,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2020-10-13 06:50:52,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:50:52,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:50:52,337 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:50:52,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:50:52,345 INFO L82 PathProgramCache]: Analyzing trace with hash 416949744, now seen corresponding path program 1 times [2020-10-13 06:50:52,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:50:52,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506130303] [2020-10-13 06:50:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:50:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:53,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:58,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:58,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1709 [2020-10-13 06:50:58,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:58,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5238 [2020-10-13 06:50:58,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:50:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:50:58,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1703 [2020-10-13 06:50:58,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:51:00,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:51:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:00,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:00,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:51:00,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:51:00,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:51:00,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:51:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:51:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:51:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:51:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:51:02,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506130303] [2020-10-13 06:51:02,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:51:02,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 06:51:02,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021001359] [2020-10-13 06:51:02,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:51:02,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:51:02,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:51:02,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:51:02,530 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-13 06:51:26,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:51:26,618 INFO L93 Difference]: Finished difference Result 8124 states and 15411 transitions. [2020-10-13 06:51:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:51:26,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1687 [2020-10-13 06:51:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:51:26,711 INFO L225 Difference]: With dead ends: 8124 [2020-10-13 06:51:26,711 INFO L226 Difference]: Without dead ends: 5834 [2020-10-13 06:51:26,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:51:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2020-10-13 06:51:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5801. [2020-10-13 06:51:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-10-13 06:51:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9374 transitions. [2020-10-13 06:51:27,109 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9374 transitions. Word has length 1687 [2020-10-13 06:51:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:51:27,117 INFO L479 AbstractCegarLoop]: Abstraction has 5801 states and 9374 transitions. [2020-10-13 06:51:27,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:51:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9374 transitions. [2020-10-13 06:51:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1697 [2020-10-13 06:51:27,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:51:27,241 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:51:27,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:51:27,242 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:51:27,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:51:27,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1792438683, now seen corresponding path program 1 times [2020-10-13 06:51:27,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:51:27,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578241872] [2020-10-13 06:51:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:51:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:32,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:32,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1720 [2020-10-13 06:51:32,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:51:32,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 06:51:32,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:51:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:51:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:51:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:51:33,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:51:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:34,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:34,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:34,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:51:34,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:51:34,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:51:34,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:51:34,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:51:34,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:51:34,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:51:34,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:51:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:34,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:34,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:34,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:51:34,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:51:34,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:51:34,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:51:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:51:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:51:34,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:51:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:51:35,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578241872] [2020-10-13 06:51:35,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:51:35,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:51:35,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146908214] [2020-10-13 06:51:35,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:51:35,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:51:35,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:51:35,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:51:35,416 INFO L87 Difference]: Start difference. First operand 5801 states and 9374 transitions. Second operand 7 states. [2020-10-13 06:51:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:51:58,936 INFO L93 Difference]: Finished difference Result 17388 states and 28788 transitions. [2020-10-13 06:51:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:51:58,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1696 [2020-10-13 06:51:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:51:59,024 INFO L225 Difference]: With dead ends: 17388 [2020-10-13 06:51:59,025 INFO L226 Difference]: Without dead ends: 11593 [2020-10-13 06:51:59,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:51:59,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11593 states. [2020-10-13 06:51:59,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11593 to 11309. [2020-10-13 06:51:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11309 states. [2020-10-13 06:51:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11309 states to 11309 states and 16548 transitions. [2020-10-13 06:51:59,595 INFO L78 Accepts]: Start accepts. Automaton has 11309 states and 16548 transitions. Word has length 1696 [2020-10-13 06:51:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:51:59,595 INFO L479 AbstractCegarLoop]: Abstraction has 11309 states and 16548 transitions. [2020-10-13 06:51:59,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:51:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 11309 states and 16548 transitions. [2020-10-13 06:51:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1699 [2020-10-13 06:51:59,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:51:59,686 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:51:59,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:51:59,687 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:51:59,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:51:59,688 INFO L82 PathProgramCache]: Analyzing trace with hash 493772351, now seen corresponding path program 1 times [2020-10-13 06:51:59,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:51:59,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425689869] [2020-10-13 06:51:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:52:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:00,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:05,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:05,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1722 [2020-10-13 06:52:05,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:52:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5212 [2020-10-13 06:52:05,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:52:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:52:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:52:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:52:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:06,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:06,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:52:06,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:52:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:52:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:52:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:52:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:52:06,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:52:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:06,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:06,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:06,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:52:06,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:06,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:52:06,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:06,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:52:06,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:52:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:52:06,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:52:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:52:07,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425689869] [2020-10-13 06:52:07,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:52:07,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 06:52:07,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365509082] [2020-10-13 06:52:07,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:52:07,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:52:07,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:52:07,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:52:07,972 INFO L87 Difference]: Start difference. First operand 11309 states and 16548 transitions. Second operand 8 states. [2020-10-13 06:52:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:52:40,228 INFO L93 Difference]: Finished difference Result 33809 states and 48934 transitions. [2020-10-13 06:52:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:52:40,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1698 [2020-10-13 06:52:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:52:40,315 INFO L225 Difference]: With dead ends: 33809 [2020-10-13 06:52:40,315 INFO L226 Difference]: Without dead ends: 22506 [2020-10-13 06:52:40,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:52:40,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22506 states. [2020-10-13 06:52:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22506 to 22308. [2020-10-13 06:52:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22308 states. [2020-10-13 06:52:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22308 states to 22308 states and 31320 transitions. [2020-10-13 06:52:40,915 INFO L78 Accepts]: Start accepts. Automaton has 22308 states and 31320 transitions. Word has length 1698 [2020-10-13 06:52:40,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:52:40,916 INFO L479 AbstractCegarLoop]: Abstraction has 22308 states and 31320 transitions. [2020-10-13 06:52:40,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:52:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 22308 states and 31320 transitions. [2020-10-13 06:52:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2020-10-13 06:52:41,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:52:41,019 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:52:41,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:52:41,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:52:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:52:41,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1057929682, now seen corresponding path program 1 times [2020-10-13 06:52:41,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:52:41,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772884340] [2020-10-13 06:52:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:52:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:46,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:46,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-13 06:52:46,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:52:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 06:52:46,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:52:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:52:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:52:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:46,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:52:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:46,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:46,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:46,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:52:46,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:46,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:52:46,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:46,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:52:46,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:52:46,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:52:46,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:52:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:46,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:46,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:52:46,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:46,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:52:46,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:52:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:52:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:52:46,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:52:47,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772884340] [2020-10-13 06:52:47,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:52:47,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:52:47,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169380558] [2020-10-13 06:52:47,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:52:47,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:52:47,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:52:47,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:52:47,732 INFO L87 Difference]: Start difference. First operand 22308 states and 31320 transitions. Second operand 7 states. [2020-10-13 06:53:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:53:10,114 INFO L93 Difference]: Finished difference Result 64269 states and 95919 transitions. [2020-10-13 06:53:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:53:10,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1704 [2020-10-13 06:53:10,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:53:10,258 INFO L225 Difference]: With dead ends: 64269 [2020-10-13 06:53:10,258 INFO L226 Difference]: Without dead ends: 41967 [2020-10-13 06:53:10,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:53:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41967 states. [2020-10-13 06:53:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41967 to 41526. [2020-10-13 06:53:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41526 states. [2020-10-13 06:53:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41526 states to 41526 states and 57223 transitions. [2020-10-13 06:53:11,291 INFO L78 Accepts]: Start accepts. Automaton has 41526 states and 57223 transitions. Word has length 1704 [2020-10-13 06:53:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:53:11,292 INFO L479 AbstractCegarLoop]: Abstraction has 41526 states and 57223 transitions. [2020-10-13 06:53:11,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:53:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 41526 states and 57223 transitions. [2020-10-13 06:53:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2020-10-13 06:53:11,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:53:11,428 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:53:11,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:53:11,428 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:53:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:53:11,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1294131217, now seen corresponding path program 1 times [2020-10-13 06:53:11,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:53:11,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939529513] [2020-10-13 06:53:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:53:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:12,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:16,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:16,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1733 [2020-10-13 06:53:16,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:53:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-13 06:53:16,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:53:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:53:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 06:53:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:53:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:17,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:17,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:53:17,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:53:17,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:53:17,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:17,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:53:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:53:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:53:17,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:17,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:53:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:17,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:17,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 06:53:17,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:53:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:53:17,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:53:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:53:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:53:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:53:18,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939529513] [2020-10-13 06:53:18,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:53:18,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:53:18,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525681690] [2020-10-13 06:53:18,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:53:18,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:53:18,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:53:18,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:53:18,398 INFO L87 Difference]: Start difference. First operand 41526 states and 57223 transitions. Second operand 7 states. [2020-10-13 06:53:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:53:41,260 INFO L93 Difference]: Finished difference Result 98739 states and 137883 transitions. [2020-10-13 06:53:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:53:41,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1709 [2020-10-13 06:53:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:53:41,446 INFO L225 Difference]: With dead ends: 98739 [2020-10-13 06:53:41,446 INFO L226 Difference]: Without dead ends: 57219 [2020-10-13 06:53:41,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:53:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57219 states. [2020-10-13 06:53:42,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57219 to 54955. [2020-10-13 06:53:42,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54955 states. [2020-10-13 06:53:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54955 states to 54955 states and 74504 transitions. [2020-10-13 06:53:42,612 INFO L78 Accepts]: Start accepts. Automaton has 54955 states and 74504 transitions. Word has length 1709 [2020-10-13 06:53:42,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:53:42,613 INFO L479 AbstractCegarLoop]: Abstraction has 54955 states and 74504 transitions. [2020-10-13 06:53:42,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:53:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 54955 states and 74504 transitions. [2020-10-13 06:53:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1816 [2020-10-13 06:53:42,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:53:42,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:53:42,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:53:42,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:53:42,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:53:42,768 INFO L82 PathProgramCache]: Analyzing trace with hash 305644932, now seen corresponding path program 1 times [2020-10-13 06:53:42,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:53:42,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613386006] [2020-10-13 06:53:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:53:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:43,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:48,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:48,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1841 [2020-10-13 06:53:48,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:53:48,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-13 06:53:48,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:53:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-13 06:53:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:53:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:53:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:48,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:48,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:48,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:53:48,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:53:48,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:53:48,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:53:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:53:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:53:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:48,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:53:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:48,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:48,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:53:48,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:53:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:53:48,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:53:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:53:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 06:53:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:48,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 06:53:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:48,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:53:48,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:53:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:53:48,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:53:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:53:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:53:48,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:53:50,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613386006] [2020-10-13 06:53:50,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:53:50,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:53:50,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215075222] [2020-10-13 06:53:50,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:53:50,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:53:50,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:53:50,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:53:50,057 INFO L87 Difference]: Start difference. First operand 54955 states and 74504 transitions. Second operand 7 states. [2020-10-13 06:54:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:54:11,823 INFO L93 Difference]: Finished difference Result 135342 states and 185203 transitions. [2020-10-13 06:54:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:54:11,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1815 [2020-10-13 06:54:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:54:12,098 INFO L225 Difference]: With dead ends: 135342 [2020-10-13 06:54:12,098 INFO L226 Difference]: Without dead ends: 80393 [2020-10-13 06:54:12,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:54:12,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80393 states. [2020-10-13 06:54:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80393 to 73218. [2020-10-13 06:54:13,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73218 states. [2020-10-13 06:54:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73218 states to 73218 states and 92474 transitions. [2020-10-13 06:54:13,490 INFO L78 Accepts]: Start accepts. Automaton has 73218 states and 92474 transitions. Word has length 1815 [2020-10-13 06:54:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:54:13,491 INFO L479 AbstractCegarLoop]: Abstraction has 73218 states and 92474 transitions. [2020-10-13 06:54:13,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:54:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand 73218 states and 92474 transitions. [2020-10-13 06:54:14,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1819 [2020-10-13 06:54:14,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:54:14,043 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:54:14,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:54:14,043 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:54:14,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:54:14,045 INFO L82 PathProgramCache]: Analyzing trace with hash 245552904, now seen corresponding path program 1 times [2020-10-13 06:54:14,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:54:14,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471234802] [2020-10-13 06:54:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:54:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:54:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:54:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking...