/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem17_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:35:16,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:35:16,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:35:16,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:35:16,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:35:16,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:35:16,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:35:16,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:35:16,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:35:16,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:35:16,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:35:16,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:35:16,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:35:16,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:35:16,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:35:16,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:35:16,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:35:16,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:35:16,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:35:16,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:35:16,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:35:16,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:35:16,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:35:16,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:35:16,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:35:16,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:35:16,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:35:16,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:35:16,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:35:16,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:35:16,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:35:16,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:35:16,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:35:16,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:35:16,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:35:16,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:35:16,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:35:16,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:35:16,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:35:16,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:35:16,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:35:16,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:35:16,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:35:16,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:35:16,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:35:16,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:35:16,859 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:35:16,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:35:16,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:35:16,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:35:16,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:35:16,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:35:16,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:35:16,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:35:16,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:35:16,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:35:16,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:35:16,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:35:16,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:35:16,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:35:16,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:35:16,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:35:16,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:35:16,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:35:16,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:35:16,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:35:16,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:35:16,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:35:16,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:35:16,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:35:16,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:35:16,864 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:35:17,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:35:17,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:35:17,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:35:17,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:35:17,211 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:35:17,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label44.c [2020-10-14 22:35:17,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee5d834a/e5a3455f5e334c1cbcc8521dd8c5e066/FLAGff32c45c6 [2020-10-14 22:35:18,010 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:35:18,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label44.c [2020-10-14 22:35:18,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee5d834a/e5a3455f5e334c1cbcc8521dd8c5e066/FLAGff32c45c6 [2020-10-14 22:35:18,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee5d834a/e5a3455f5e334c1cbcc8521dd8c5e066 [2020-10-14 22:35:18,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:35:18,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:35:18,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:35:18,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:35:18,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:35:18,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:35:18" (1/1) ... [2020-10-14 22:35:18,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441bb81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:18, skipping insertion in model container [2020-10-14 22:35:18,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:35:18" (1/1) ... [2020-10-14 22:35:18,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:35:18,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:35:19,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:35:19,530 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:35:19,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:35:19,971 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:35:19,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:19 WrapperNode [2020-10-14 22:35:19,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:35:19,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:35:19,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:35:19,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:35:19,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:19" (1/1) ... [2020-10-14 22:35:19,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:19" (1/1) ... [2020-10-14 22:35:20,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:19" (1/1) ... [2020-10-14 22:35:20,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:19" (1/1) ... [2020-10-14 22:35:20,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:19" (1/1) ... [2020-10-14 22:35:20,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:19" (1/1) ... [2020-10-14 22:35:20,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:19" (1/1) ... [2020-10-14 22:35:20,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:35:20,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:35:20,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:35:20,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:35:20,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:35:20,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:35:20,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:35:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:35:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:35:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:35:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:35:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:35:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:35:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:35:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:35:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:35:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:35:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:35:29,185 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:35:29,186 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:35:29,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:35:29 BoogieIcfgContainer [2020-10-14 22:35:29,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:35:29,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:35:29,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:35:29,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:35:29,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:35:18" (1/3) ... [2020-10-14 22:35:29,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324defd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:35:29, skipping insertion in model container [2020-10-14 22:35:29,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:19" (2/3) ... [2020-10-14 22:35:29,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324defd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:35:29, skipping insertion in model container [2020-10-14 22:35:29,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:35:29" (3/3) ... [2020-10-14 22:35:29,204 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label44.c [2020-10-14 22:35:29,215 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:35:29,224 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:35:29,239 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:35:29,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:35:29,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:35:29,321 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:35:29,322 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:35:29,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:35:29,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:35:29,322 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:35:29,322 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:35:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:35:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 22:35:29,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:29,379 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] [2020-10-14 22:35:29,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:29,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:29,386 INFO L82 PathProgramCache]: Analyzing trace with hash -281563599, now seen corresponding path program 1 times [2020-10-14 22:35:29,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:29,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697215616] [2020-10-14 22:35:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:30,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:30,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:35:30,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-14 22:35:30,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:30,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:30,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:35:30,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:35:30,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 22:35:30,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:35:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:30,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:30,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:30,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:30,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:30,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:35:30,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:30,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:35:30,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:35:30,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697215616] [2020-10-14 22:35:30,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:35:30,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:35:30,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084968229] [2020-10-14 22:35:30,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:35:30,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:30,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:35:30,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:35:30,219 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:35:40,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:35:40,695 INFO L93 Difference]: Finished difference Result 1690 states and 3086 transitions. [2020-10-14 22:35:40,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:35:40,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 22:35:40,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:35:40,722 INFO L225 Difference]: With dead ends: 1690 [2020-10-14 22:35:40,723 INFO L226 Difference]: Without dead ends: 1010 [2020-10-14 22:35:40,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:35:40,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-14 22:35:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1003. [2020-10-14 22:35:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-14 22:35:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1499 transitions. [2020-10-14 22:35:40,846 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1499 transitions. Word has length 41 [2020-10-14 22:35:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:35:40,847 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1499 transitions. [2020-10-14 22:35:40,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:35:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1499 transitions. [2020-10-14 22:35:40,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 22:35:40,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:40,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:35:40,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:35:40,854 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:40,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:40,854 INFO L82 PathProgramCache]: Analyzing trace with hash 323449881, now seen corresponding path program 1 times [2020-10-14 22:35:40,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:40,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100736351] [2020-10-14 22:35:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:40,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:41,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:41,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 22:35:41,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:35:41,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-10-14 22:35:41,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:41,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:41,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:35:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:35:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:35:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:35:42,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:42,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:42,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:42,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:42,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:42,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:35:42,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:42,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:35:42,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:42,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:35:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:42,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:42,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:42,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:35:42,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:42,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 22:35:42,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:42,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:35:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:42,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:35:42,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 22:35:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:35:42,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100736351] [2020-10-14 22:35:42,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:35:42,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:35:42,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304219920] [2020-10-14 22:35:42,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:35:42,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:42,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:35:42,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:35:42,609 INFO L87 Difference]: Start difference. First operand 1003 states and 1499 transitions. Second operand 8 states. [2020-10-14 22:36:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:00,501 INFO L93 Difference]: Finished difference Result 2519 states and 3635 transitions. [2020-10-14 22:36:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:36:00,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2020-10-14 22:36:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:00,512 INFO L225 Difference]: With dead ends: 2519 [2020-10-14 22:36:00,513 INFO L226 Difference]: Without dead ends: 1488 [2020-10-14 22:36:00,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:36:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2020-10-14 22:36:00,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1452. [2020-10-14 22:36:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-14 22:36:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1985 transitions. [2020-10-14 22:36:00,575 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1985 transitions. Word has length 115 [2020-10-14 22:36:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:00,576 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1985 transitions. [2020-10-14 22:36:00,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:36:00,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1985 transitions. [2020-10-14 22:36:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 22:36:00,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:00,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:00,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:36:00,582 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:00,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:00,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1543340313, now seen corresponding path program 1 times [2020-10-14 22:36:00,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:00,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479573007] [2020-10-14 22:36:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:00,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:00,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 22:36:00,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:00,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-14 22:36:00,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:00,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:00,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:00,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:36:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 22:36:00,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:01,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:01,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:01,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:36:01,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:01,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:01,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:01,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:01,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:01,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:01,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:01,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 22:36:01,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:01,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:36:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:01,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479573007] [2020-10-14 22:36:01,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:01,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:36:01,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047007325] [2020-10-14 22:36:01,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:36:01,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:01,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:36:01,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:36:01,406 INFO L87 Difference]: Start difference. First operand 1452 states and 1985 transitions. Second operand 5 states. [2020-10-14 22:36:12,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:12,840 INFO L93 Difference]: Finished difference Result 3788 states and 5353 transitions. [2020-10-14 22:36:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:36:12,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 22:36:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:12,856 INFO L225 Difference]: With dead ends: 3788 [2020-10-14 22:36:12,857 INFO L226 Difference]: Without dead ends: 2780 [2020-10-14 22:36:12,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:36:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2020-10-14 22:36:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2774. [2020-10-14 22:36:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2774 states. [2020-10-14 22:36:12,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3794 transitions. [2020-10-14 22:36:12,942 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3794 transitions. Word has length 128 [2020-10-14 22:36:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:12,943 INFO L479 AbstractCegarLoop]: Abstraction has 2774 states and 3794 transitions. [2020-10-14 22:36:12,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:36:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3794 transitions. [2020-10-14 22:36:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 22:36:12,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:12,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:12,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:36:12,949 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:12,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1653006400, now seen corresponding path program 1 times [2020-10-14 22:36:12,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:12,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923235955] [2020-10-14 22:36:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:14,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:14,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 22:36:14,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:36:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-10-14 22:36:14,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:14,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:36:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 22:36:14,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:14,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:14,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:14,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:14,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:36:14,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:14,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:15,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:15,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 22:36:15,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 22:36:15,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:15,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:15,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 22:36:15,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:15,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923235955] [2020-10-14 22:36:15,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:36:15,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:36:15,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214874281] [2020-10-14 22:36:15,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:36:15,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:15,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:36:15,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:36:15,431 INFO L87 Difference]: Start difference. First operand 2774 states and 3794 transitions. Second operand 7 states. [2020-10-14 22:36:29,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:29,328 INFO L93 Difference]: Finished difference Result 5179 states and 7574 transitions. [2020-10-14 22:36:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:36:29,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-14 22:36:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:29,349 INFO L225 Difference]: With dead ends: 5179 [2020-10-14 22:36:29,349 INFO L226 Difference]: Without dead ends: 2844 [2020-10-14 22:36:29,355 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 [2020-10-14 22:36:29,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2020-10-14 22:36:29,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2795. [2020-10-14 22:36:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-10-14 22:36:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3692 transitions. [2020-10-14 22:36:29,438 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3692 transitions. Word has length 178 [2020-10-14 22:36:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:29,439 INFO L479 AbstractCegarLoop]: Abstraction has 2795 states and 3692 transitions. [2020-10-14 22:36:29,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:36:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3692 transitions. [2020-10-14 22:36:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 22:36:29,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:29,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:29,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:36:29,444 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:29,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:29,444 INFO L82 PathProgramCache]: Analyzing trace with hash 617462737, now seen corresponding path program 1 times [2020-10-14 22:36:29,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:29,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722294966] [2020-10-14 22:36:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:30,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:31,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:31,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 22:36:31,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:36:31,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2201 [2020-10-14 22:36:31,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:31,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:36:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 22:36:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:31,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:31,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:31,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:31,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:36:31,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:31,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:31,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:31,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:31,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:32,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:32,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:32,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:32,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 22:36:32,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:32,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:36:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:36:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:36:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:36:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:32,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:32,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:36:32,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:32,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 22:36:32,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:32,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:32,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:32,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:36:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 64 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:36:32,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722294966] [2020-10-14 22:36:32,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:32,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:36:32,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177178980] [2020-10-14 22:36:32,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:36:32,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:32,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:36:32,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:36:32,571 INFO L87 Difference]: Start difference. First operand 2795 states and 3692 transitions. Second operand 9 states. [2020-10-14 22:36:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:51,289 INFO L93 Difference]: Finished difference Result 6142 states and 8362 transitions. [2020-10-14 22:36:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:36:51,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 199 [2020-10-14 22:36:51,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:51,310 INFO L225 Difference]: With dead ends: 6142 [2020-10-14 22:36:51,310 INFO L226 Difference]: Without dead ends: 3786 [2020-10-14 22:36:51,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:36:51,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2020-10-14 22:36:51,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3725. [2020-10-14 22:36:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3725 states. [2020-10-14 22:36:51,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 4758 transitions. [2020-10-14 22:36:51,420 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 4758 transitions. Word has length 199 [2020-10-14 22:36:51,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:51,421 INFO L479 AbstractCegarLoop]: Abstraction has 3725 states and 4758 transitions. [2020-10-14 22:36:51,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:36:51,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 4758 transitions. [2020-10-14 22:36:51,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 22:36:51,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:51,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:51,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:36:51,425 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:51,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:51,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1871132515, now seen corresponding path program 1 times [2020-10-14 22:36:51,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:51,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973548193] [2020-10-14 22:36:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:51,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:52,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:53,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:53,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 22:36:53,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:36:53,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2009 [2020-10-14 22:36:53,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:53,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:36:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 22:36:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:53,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:53,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:53,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:53,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:36:53,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:53,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:53,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:53,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:53,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:53,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:53,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:53,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:53,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 22:36:53,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:53,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:53,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:36:53,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:53,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:36:53,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:53,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:36:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:54,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:54,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:36:54,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 22:36:54,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:54,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:36:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 76 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:36:54,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973548193] [2020-10-14 22:36:54,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:54,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:36:54,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055188198] [2020-10-14 22:36:54,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:36:54,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:54,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:36:54,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:36:54,211 INFO L87 Difference]: Start difference. First operand 3725 states and 4758 transitions. Second operand 9 states. [2020-10-14 22:37:28,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:28,652 INFO L93 Difference]: Finished difference Result 12233 states and 15884 transitions. [2020-10-14 22:37:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 22:37:28,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2020-10-14 22:37:28,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:28,686 INFO L225 Difference]: With dead ends: 12233 [2020-10-14 22:37:28,687 INFO L226 Difference]: Without dead ends: 7596 [2020-10-14 22:37:28,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:37:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2020-10-14 22:37:28,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 6988. [2020-10-14 22:37:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6988 states. [2020-10-14 22:37:28,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6988 states to 6988 states and 8915 transitions. [2020-10-14 22:37:28,913 INFO L78 Accepts]: Start accepts. Automaton has 6988 states and 8915 transitions. Word has length 205 [2020-10-14 22:37:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:28,914 INFO L479 AbstractCegarLoop]: Abstraction has 6988 states and 8915 transitions. [2020-10-14 22:37:28,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:37:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6988 states and 8915 transitions. [2020-10-14 22:37:28,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-14 22:37:28,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:28,923 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:37:28,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:37:28,924 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:28,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:28,926 INFO L82 PathProgramCache]: Analyzing trace with hash -45632054, now seen corresponding path program 1 times [2020-10-14 22:37:28,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:28,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343761394] [2020-10-14 22:37:28,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:30,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:32,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:33,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:33,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 22:37:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:37:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4247 [2020-10-14 22:37:33,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:33,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:37:33,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:37:33,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 293 [2020-10-14 22:37:33,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:33,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:33,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:33,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:33,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:33,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:37:33,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:33,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:33,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:33,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:37:33,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:33,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:33,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:37:33,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:33,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 22:37:33,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:33,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:37:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:33,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:37:33,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:33,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:37:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:34,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:34,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:37:34,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:34,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 22:37:34,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:34,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:34,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:37:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:37:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:34,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:34,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:37:34,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:34,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 22:37:34,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:34,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:37:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 79 proven. 236 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 22:37:34,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343761394] [2020-10-14 22:37:34,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:34,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:37:34,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092423656] [2020-10-14 22:37:34,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:37:34,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:34,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:37:34,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:37:34,648 INFO L87 Difference]: Start difference. First operand 6988 states and 8915 transitions. Second operand 10 states. [2020-10-14 22:37:42,192 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-14 22:38:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:00,293 INFO L93 Difference]: Finished difference Result 16001 states and 21481 transitions. [2020-10-14 22:38:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 22:38:00,296 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 285 [2020-10-14 22:38:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:00,335 INFO L225 Difference]: With dead ends: 16001 [2020-10-14 22:38:00,335 INFO L226 Difference]: Without dead ends: 9454 [2020-10-14 22:38:00,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-14 22:38:00,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9454 states. [2020-10-14 22:38:00,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9454 to 8789. [2020-10-14 22:38:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8789 states. [2020-10-14 22:38:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8789 states to 8789 states and 11027 transitions. [2020-10-14 22:38:00,560 INFO L78 Accepts]: Start accepts. Automaton has 8789 states and 11027 transitions. Word has length 285 [2020-10-14 22:38:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:00,561 INFO L479 AbstractCegarLoop]: Abstraction has 8789 states and 11027 transitions. [2020-10-14 22:38:00,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:38:00,562 INFO L276 IsEmpty]: Start isEmpty. Operand 8789 states and 11027 transitions. [2020-10-14 22:38:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-14 22:38:00,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:00,573 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:00,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:38:00,574 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:00,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:00,575 INFO L82 PathProgramCache]: Analyzing trace with hash -842816554, now seen corresponding path program 1 times [2020-10-14 22:38:00,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:00,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567597654] [2020-10-14 22:38:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:00,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:04,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:04,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-14 22:38:04,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:38:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4132 [2020-10-14 22:38:04,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:04,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:38:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:38:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 22:38:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:04,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:04,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:04,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:04,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:04,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:38:04,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:04,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:04,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:05,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:05,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:05,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:05,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:38:05,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 22:38:05,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:05,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:38:05,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:05,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:38:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:05,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:05,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:05,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:38:05,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:38:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 22:38:05,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:05,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:05,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:38:05,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:38:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:05,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:05,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:38:05,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 22:38:05,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:05,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:05,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:38:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 250 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 22:38:05,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567597654] [2020-10-14 22:38:05,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:05,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:38:05,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458568510] [2020-10-14 22:38:05,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:38:05,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:05,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:38:05,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:38:05,711 INFO L87 Difference]: Start difference. First operand 8789 states and 11027 transitions. Second operand 7 states. [2020-10-14 22:38:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:25,763 INFO L93 Difference]: Finished difference Result 22381 states and 30545 transitions. [2020-10-14 22:38:25,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:38:25,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-14 22:38:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:25,857 INFO L225 Difference]: With dead ends: 22381 [2020-10-14 22:38:25,857 INFO L226 Difference]: Without dead ends: 14033 [2020-10-14 22:38:25,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:38:25,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14033 states. [2020-10-14 22:38:26,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14033 to 13812. [2020-10-14 22:38:26,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13812 states. [2020-10-14 22:38:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13812 states to 13812 states and 17418 transitions. [2020-10-14 22:38:26,276 INFO L78 Accepts]: Start accepts. Automaton has 13812 states and 17418 transitions. Word has length 291 [2020-10-14 22:38:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:26,277 INFO L479 AbstractCegarLoop]: Abstraction has 13812 states and 17418 transitions. [2020-10-14 22:38:26,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:38:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 13812 states and 17418 transitions. [2020-10-14 22:38:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-14 22:38:26,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:26,284 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:26,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:38:26,284 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:26,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:26,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1475684172, now seen corresponding path program 1 times [2020-10-14 22:38:26,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:26,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956686173] [2020-10-14 22:38:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:26,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:30,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:30,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 22:38:30,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:38:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3779 [2020-10-14 22:38:30,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:30,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:30,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:30,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:38:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:38:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:30,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:30,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:30,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:30,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:30,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:38:30,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:30,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:30,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:30,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:30,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:38:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 22:38:30,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:30,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:38:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:30,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:38:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:30,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:30,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:38:30,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:30,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 22:38:30,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:30,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:38:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:38:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:31,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:31,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:31,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:38:31,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:31,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:38:31,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:31,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:38:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:31,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:38:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 190 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:38:31,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956686173] [2020-10-14 22:38:31,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:31,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:38:31,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081344299] [2020-10-14 22:38:31,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:38:31,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:31,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:38:31,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:38:31,296 INFO L87 Difference]: Start difference. First operand 13812 states and 17418 transitions. Second operand 7 states. [2020-10-14 22:38:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:52,797 INFO L93 Difference]: Finished difference Result 31883 states and 40886 transitions. [2020-10-14 22:38:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:38:52,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-14 22:38:52,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:52,863 INFO L225 Difference]: With dead ends: 31883 [2020-10-14 22:38:52,863 INFO L226 Difference]: Without dead ends: 18512 [2020-10-14 22:38:52,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:38:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18512 states. [2020-10-14 22:38:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18512 to 18419. [2020-10-14 22:38:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18419 states. [2020-10-14 22:38:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18419 states to 18419 states and 22925 transitions. [2020-10-14 22:38:53,257 INFO L78 Accepts]: Start accepts. Automaton has 18419 states and 22925 transitions. Word has length 308 [2020-10-14 22:38:53,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:53,258 INFO L479 AbstractCegarLoop]: Abstraction has 18419 states and 22925 transitions. [2020-10-14 22:38:53,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:38:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 18419 states and 22925 transitions. [2020-10-14 22:38:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 22:38:53,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:53,267 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:53,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:38:53,268 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:53,268 INFO L82 PathProgramCache]: Analyzing trace with hash -982685036, now seen corresponding path program 1 times [2020-10-14 22:38:53,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:53,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610280971] [2020-10-14 22:38:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:53,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:53,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:58,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:58,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 22:38:58,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:38:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 22:38:58,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:58,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:38:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:38:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:38:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:38:58,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:58,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:58,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:58,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:58,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:38:58,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:58,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:38:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:58,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:58,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:58,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:58,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:38:58,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:58,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 22:38:58,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:58,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:58,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:38:58,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:58,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:38:58,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:58,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:38:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:58,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:59,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:59,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:38:59,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 22:38:59,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:59,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:38:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:59,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:38:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:59,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:59,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:38:59,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:59,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:38:59,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:59,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:59,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:59,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:38:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:59,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:38:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 190 proven. 142 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:38:59,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610280971] [2020-10-14 22:38:59,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:59,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:38:59,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387545425] [2020-10-14 22:38:59,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:38:59,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:59,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:38:59,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:38:59,385 INFO L87 Difference]: Start difference. First operand 18419 states and 22925 transitions. Second operand 10 states. [2020-10-14 22:39:06,610 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40