/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/Problem06_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:10:42,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:10:42,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:10:42,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:10:42,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:10:42,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:10:42,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:10:42,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:10:42,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:10:42,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:10:42,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:10:42,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:10:42,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:10:42,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:10:42,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:10:42,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:10:42,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:10:42,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:10:42,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:10:42,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:10:42,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:10:42,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:10:42,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:10:42,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:10:42,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:10:42,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:10:42,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:10:42,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:10:42,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:10:42,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:10:42,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:10:42,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:10:42,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:10:42,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:10:42,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:10:42,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:10:42,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:10:42,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:10:42,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:10:42,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:10:42,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:10:42,865 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 07:10:42,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:10:42,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:10:42,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:10:42,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:10:42,888 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:10:42,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:10:42,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:10:42,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:10:42,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:10:42,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:10:42,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:10:42,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:10:42,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:10:42,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:10:42,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:10:42,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:10:42,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:10:42,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:10:42,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:10:42,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:10:42,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:10:42,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:10:42,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:10:42,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:10:42,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:10:42,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:10:42,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:10:42,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:10:42,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:10:42,893 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 07:10:43,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:10:43,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:10:43,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:10:43,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:10:43,239 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:10:43,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label43.c [2020-10-13 07:10:43,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f8eef01c/a9071c193e4a4e0dbda500d721bf427f/FLAG16d1d6ef9 [2020-10-13 07:10:44,152 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:10:44,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label43.c [2020-10-13 07:10:44,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f8eef01c/a9071c193e4a4e0dbda500d721bf427f/FLAG16d1d6ef9 [2020-10-13 07:10:44,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f8eef01c/a9071c193e4a4e0dbda500d721bf427f [2020-10-13 07:10:44,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:10:44,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:10:44,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:10:44,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:10:44,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:10:44,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:44" (1/1) ... [2020-10-13 07:10:44,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159a218f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:44, skipping insertion in model container [2020-10-13 07:10:44,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:44" (1/1) ... [2020-10-13 07:10:44,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:10:44,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:10:47,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:10:47,390 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:10:48,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:10:48,539 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:10:48,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:48 WrapperNode [2020-10-13 07:10:48,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:10:48,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:10:48,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:10:48,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:10:48,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:48" (1/1) ... [2020-10-13 07:10:48,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:48" (1/1) ... [2020-10-13 07:10:48,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:48" (1/1) ... [2020-10-13 07:10:48,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:48" (1/1) ... [2020-10-13 07:10:48,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:48" (1/1) ... [2020-10-13 07:10:48,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:48" (1/1) ... [2020-10-13 07:10:48,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:48" (1/1) ... [2020-10-13 07:10:48,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:10:48,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:10:48,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:10:48,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:10:48,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:48" (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 07:10:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:10:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:10:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:10:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:10:49,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:10:49,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:10:49,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:10:49,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:10:49,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:10:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:10:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:10:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:10:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:10:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:10:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:10:49,069 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:10:49,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:10:49,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:10:49,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:10:56,041 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:10:56,042 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:10:56,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:56 BoogieIcfgContainer [2020-10-13 07:10:56,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:10:56,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:10:56,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:10:56,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:10:56,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:10:44" (1/3) ... [2020-10-13 07:10:56,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f32d584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:56, skipping insertion in model container [2020-10-13 07:10:56,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:48" (2/3) ... [2020-10-13 07:10:56,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f32d584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:56, skipping insertion in model container [2020-10-13 07:10:56,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:56" (3/3) ... [2020-10-13 07:10:56,066 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label43.c [2020-10-13 07:10:56,077 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:10:56,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:10:56,101 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:10:56,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:10:56,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:10:56,128 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:10:56,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:10:56,128 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:10:56,128 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:10:56,129 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:10:56,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:10:56,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:10:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2020-10-13 07:10:56,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:10:56,237 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, 1, 1, 1, 1, 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 07:10:56,237 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:10:56,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:10:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash -761965993, now seen corresponding path program 1 times [2020-10-13 07:10:56,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:10:56,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355351901] [2020-10-13 07:10:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:10:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:10:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:02,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:02,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1008 [2020-10-13 07:11:02,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:11:02,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-13 07:11:02,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:11:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:11:02,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:11:02,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:11:06,080 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-13 07:11:06,244 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-13 07:11:06,411 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-13 07:11:06,578 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-13 07:11:06,730 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-13 07:11:06,875 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-13 07:11:07,025 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-13 07:11:07,184 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-13 07:11:07,352 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-13 07:11:07,524 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-13 07:11:07,712 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-13 07:11:08,093 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-13 07:11:08,367 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:11:08,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:11:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:08,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:08,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:08,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:11:08,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:08,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 07:11:08,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:08,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:11:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:11:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:11:08,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:11:20,124 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 07:11:20,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355351901] [2020-10-13 07:11:20,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:11:20,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-13 07:11:20,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220557068] [2020-10-13 07:11:20,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 07:11:20,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:11:20,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 07:11:20,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-13 07:11:20,162 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 19 states. [2020-10-13 07:11:20,533 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 07:11:21,167 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 167 [2020-10-13 07:11:21,770 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 167 [2020-10-13 07:11:22,450 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 175 [2020-10-13 07:11:26,345 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 174 [2020-10-13 07:11:29,704 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 173 [2020-10-13 07:11:32,177 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 164 [2020-10-13 07:11:32,837 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 170 [2020-10-13 07:11:34,081 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 169 [2020-10-13 07:11:43,593 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 169 [2020-10-13 07:11:44,302 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 180 [2020-10-13 07:11:47,205 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 177 [2020-10-13 07:11:54,422 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 165 [2020-10-13 07:11:55,157 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 174 [2020-10-13 07:11:57,629 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 169 [2020-10-13 07:12:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:12:09,897 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:12:09,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:12:09,899 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 992 [2020-10-13 07:12:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:12:09,937 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:12:09,938 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:12:09,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 07:12:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:12:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:12:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:12:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:12:10,135 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 992 [2020-10-13 07:12:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:12:10,139 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:12:10,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 07:12:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:12:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2020-10-13 07:12:10,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:12:10,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:12:10,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:12:10,192 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:12:10,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:12:10,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1918623190, now seen corresponding path program 1 times [2020-10-13 07:12:10,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:12:10,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300340696] [2020-10-13 07:12:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:12:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:15,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:15,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1080 [2020-10-13 07:12:15,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:12:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 07:12:15,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:15,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:12:15,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:12:15,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:12:15,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:16,949 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:12:16,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:12:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:16,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:16,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:16,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:12:16,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:16,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 07:12:16,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:12:16,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:12:16,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:12:16,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:17,118 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 07:12:17,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:12:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:17,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:17,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:12:17,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:17,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-13 07:12:17,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:12:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:12:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:12:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:12:17,800 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-13 07:12:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:12:19,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300340696] [2020-10-13 07:12:19,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:12:19,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:12:19,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578588942] [2020-10-13 07:12:19,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:12:19,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:12:19,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:12:19,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:12:19,487 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:12:19,646 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 07:12:20,796 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 07:12:41,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:12:41,048 INFO L93 Difference]: Finished difference Result 4479 states and 7522 transitions. [2020-10-13 07:12:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:12:41,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1062 [2020-10-13 07:12:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:12:41,071 INFO L225 Difference]: With dead ends: 4479 [2020-10-13 07:12:41,072 INFO L226 Difference]: Without dead ends: 3220 [2020-10-13 07:12:41,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:12:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2020-10-13 07:12:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3159. [2020-10-13 07:12:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3159 states. [2020-10-13 07:12:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4671 transitions. [2020-10-13 07:12:41,175 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4671 transitions. Word has length 1062 [2020-10-13 07:12:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:12:41,176 INFO L479 AbstractCegarLoop]: Abstraction has 3159 states and 4671 transitions. [2020-10-13 07:12:41,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:12:41,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4671 transitions. [2020-10-13 07:12:41,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2020-10-13 07:12:41,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:12:41,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:12:41,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:12:41,227 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:12:41,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:12:41,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1945814419, now seen corresponding path program 1 times [2020-10-13 07:12:41,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:12:41,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383233126] [2020-10-13 07:12:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:12:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:46,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:46,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1132 [2020-10-13 07:12:46,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:12:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 07:12:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:12:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:12:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:12:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:50,436 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-13 07:12:50,740 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2020-10-13 07:12:51,083 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2020-10-13 07:12:51,473 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 69 [2020-10-13 07:12:51,725 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 64 [2020-10-13 07:12:51,988 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2020-10-13 07:12:52,301 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2020-10-13 07:12:52,680 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 72 [2020-10-13 07:12:53,018 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 66 [2020-10-13 07:12:53,363 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 61 [2020-10-13 07:12:53,525 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:12:53,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:12:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:53,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:53,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:12:53,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 07:12:53,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:12:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:12:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:12:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:12:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:53,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:54,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:54,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:12:54,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-13 07:12:54,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:12:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:12:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:12:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:54,988 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2020-10-13 07:12:55,468 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 125 [2020-10-13 07:13:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:13:07,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383233126] [2020-10-13 07:13:07,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:13:07,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:13:07,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815476671] [2020-10-13 07:13:07,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:13:07,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:13:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:13:07,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:13:07,802 INFO L87 Difference]: Start difference. First operand 3159 states and 4671 transitions. Second operand 18 states. [2020-10-13 07:13:08,124 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 07:13:10,193 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 66 [2020-10-13 07:13:10,473 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 56 [2020-10-13 07:13:10,808 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 68 [2020-10-13 07:13:11,557 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 171 [2020-10-13 07:13:12,413 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 179 [2020-10-13 07:13:13,727 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 177 [2020-10-13 07:13:16,790 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 177 [2020-10-13 07:13:19,295 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 41 [2020-10-13 07:13:21,381 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2020-10-13 07:13:22,337 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 154 [2020-10-13 07:13:28,469 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 174 [2020-10-13 07:13:29,337 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 188 [2020-10-13 07:13:31,388 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 206 DAG size of output: 185 [2020-10-13 07:13:43,436 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 209 DAG size of output: 182 [2020-10-13 07:13:45,092 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 209 DAG size of output: 178 [2020-10-13 07:14:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:14:27,317 INFO L93 Difference]: Finished difference Result 9188 states and 14995 transitions. [2020-10-13 07:14:27,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 07:14:27,318 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1114 [2020-10-13 07:14:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:14:27,350 INFO L225 Difference]: With dead ends: 9188 [2020-10-13 07:14:27,350 INFO L226 Difference]: Without dead ends: 6789 [2020-10-13 07:14:27,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=252, Invalid=870, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 07:14:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6789 states. [2020-10-13 07:14:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6789 to 6765. [2020-10-13 07:14:27,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6765 states. [2020-10-13 07:14:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 8492 transitions. [2020-10-13 07:14:27,535 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 8492 transitions. Word has length 1114 [2020-10-13 07:14:27,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:14:27,536 INFO L479 AbstractCegarLoop]: Abstraction has 6765 states and 8492 transitions. [2020-10-13 07:14:27,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:14:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 8492 transitions. [2020-10-13 07:14:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2020-10-13 07:14:27,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:14:27,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:14:27,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:14:27,570 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:14:27,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:14:27,571 INFO L82 PathProgramCache]: Analyzing trace with hash -923528550, now seen corresponding path program 1 times [2020-10-13 07:14:27,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:14:27,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284155606] [2020-10-13 07:14:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:14:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:14:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking...