/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:29:57,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:29:57,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:29:57,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:29:57,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:29:57,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:29:57,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:29:57,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:29:57,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:29:57,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:29:57,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:29:57,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:29:57,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:29:57,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:29:57,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:29:57,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:29:57,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:29:57,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:29:57,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:29:57,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:29:57,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:29:57,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:29:57,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:29:57,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:29:57,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:29:57,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:29:57,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:29:57,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:29:57,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:29:57,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:29:57,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:29:57,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:29:57,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:29:57,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:29:57,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:29:57,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:29:57,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:29:57,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:29:57,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:29:57,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:29:57,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:29:57,864 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 22:29:57,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:29:57,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:29:57,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:29:57,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:29:57,890 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:29:57,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:29:57,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:29:57,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:29:57,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:29:57,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:29:57,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:29:57,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:29:57,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:29:57,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:29:57,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:29:57,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:29:57,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:29:57,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:29:57,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:29:57,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:29:57,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:29:57,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:29:57,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:29:57,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:29:57,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:29:57,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:29:57,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:29:57,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:29:57,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:29:57,895 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 22:29:58,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:29:58,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:29:58,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:29:58,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:29:58,209 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:29:58,209 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label26.c [2020-10-14 22:29:58,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c46d3bbfc/3ea901c38b97438f9a45f874da5d49ce/FLAG0d90ca118 [2020-10-14 22:29:58,994 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:29:58,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label26.c [2020-10-14 22:29:59,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c46d3bbfc/3ea901c38b97438f9a45f874da5d49ce/FLAG0d90ca118 [2020-10-14 22:29:59,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c46d3bbfc/3ea901c38b97438f9a45f874da5d49ce [2020-10-14 22:29:59,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:29:59,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:29:59,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:29:59,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:29:59,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:29:59,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:29:59" (1/1) ... [2020-10-14 22:29:59,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176fd554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:59, skipping insertion in model container [2020-10-14 22:29:59,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:29:59" (1/1) ... [2020-10-14 22:29:59,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:29:59,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:30:00,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:30:00,682 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:30:01,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:30:01,259 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:30:01,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:01 WrapperNode [2020-10-14 22:30:01,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:30:01,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:30:01,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:30:01,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:30:01,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:01" (1/1) ... [2020-10-14 22:30:01,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:01" (1/1) ... [2020-10-14 22:30:01,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:01" (1/1) ... [2020-10-14 22:30:01,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:01" (1/1) ... [2020-10-14 22:30:01,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:01" (1/1) ... [2020-10-14 22:30:01,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:01" (1/1) ... [2020-10-14 22:30:01,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:01" (1/1) ... [2020-10-14 22:30:01,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:30:01,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:30:01,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:30:01,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:30:01,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:01" (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 22:30:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:30:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:30:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:30:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:30:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:30:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:30:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:30:01,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:30:01,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:30:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:30:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:30:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:30:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:30:10,662 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:30:10,663 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:30:10,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:30:10 BoogieIcfgContainer [2020-10-14 22:30:10,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:30:10,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:30:10,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:30:10,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:30:10,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:29:59" (1/3) ... [2020-10-14 22:30:10,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a2df68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:30:10, skipping insertion in model container [2020-10-14 22:30:10,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:01" (2/3) ... [2020-10-14 22:30:10,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a2df68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:30:10, skipping insertion in model container [2020-10-14 22:30:10,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:30:10" (3/3) ... [2020-10-14 22:30:10,682 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label26.c [2020-10-14 22:30:10,694 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:30:10,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:30:10,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:30:10,748 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:30:10,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:30:10,749 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:30:10,749 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:30:10,749 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:30:10,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:30:10,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:30:10,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:30:10,789 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:30:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 22:30:10,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:10,798 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] [2020-10-14 22:30:10,799 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:10,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:10,806 INFO L82 PathProgramCache]: Analyzing trace with hash 323584841, now seen corresponding path program 1 times [2020-10-14 22:30:10,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:10,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234607935] [2020-10-14 22:30:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:11,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:11,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 22:30:11,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:11,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 22:30:11,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:11,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:30:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 22:30:11,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:30:11,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:11,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:11,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:30:11,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:11,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:11,537 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 22:30:11,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234607935] [2020-10-14 22:30:11,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:30:11,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:30:11,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774971669] [2020-10-14 22:30:11,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:30:11,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:11,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:30:11,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:30:11,572 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:30:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:22,149 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 22:30:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:30:22,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-14 22:30:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:22,175 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 22:30:22,176 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 22:30:22,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 22:30:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 22:30:22,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 22:30:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 22:30:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 22:30:22,346 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 34 [2020-10-14 22:30:22,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:22,348 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 22:30:22,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:30:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 22:30:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 22:30:22,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:22,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:22,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:30:22,357 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:22,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:22,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1454055508, now seen corresponding path program 1 times [2020-10-14 22:30:22,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:22,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594515982] [2020-10-14 22:30:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:22,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:22,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:23,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:23,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:23,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 22:30:23,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:30:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1137 [2020-10-14 22:30:23,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:23,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:30:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 22:30:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:30:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:23,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:23,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:23,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:23,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:23,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:30:23,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:23,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:23,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:23,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:30:23,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:30:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 22:30:23,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:23,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:30:23,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:30:24,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594515982] [2020-10-14 22:30:24,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:24,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:30:24,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690264704] [2020-10-14 22:30:24,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:30:24,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:24,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:30:24,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:30:24,012 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 6 states. [2020-10-14 22:30:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:38,613 INFO L93 Difference]: Finished difference Result 2451 states and 3903 transitions. [2020-10-14 22:30:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:30:38,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-14 22:30:38,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:38,624 INFO L225 Difference]: With dead ends: 2451 [2020-10-14 22:30:38,625 INFO L226 Difference]: Without dead ends: 1466 [2020-10-14 22:30:38,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:30:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-10-14 22:30:38,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1452. [2020-10-14 22:30:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-14 22:30:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1974 transitions. [2020-10-14 22:30:38,677 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1974 transitions. Word has length 105 [2020-10-14 22:30:38,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:38,677 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1974 transitions. [2020-10-14 22:30:38,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:30:38,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1974 transitions. [2020-10-14 22:30:38,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 22:30:38,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:38,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:38,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:30:38,688 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:38,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:38,688 INFO L82 PathProgramCache]: Analyzing trace with hash 325063520, now seen corresponding path program 1 times [2020-10-14 22:30:38,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:38,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732556464] [2020-10-14 22:30:38,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:39,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:39,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 22:30:39,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-14 22:30:39,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:39,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 22:30:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 22:30:39,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:39,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:39,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:39,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:39,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:30:39,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:39,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:39,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:30:39,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:39,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:39,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:30:39,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:30:39,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:39,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:39,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:39,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:39,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:30:39,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:30:39,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732556464] [2020-10-14 22:30:39,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:39,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:30:39,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990544032] [2020-10-14 22:30:39,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:30:39,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:39,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:30:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:30:39,389 INFO L87 Difference]: Start difference. First operand 1452 states and 1974 transitions. Second operand 5 states. [2020-10-14 22:30:53,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:53,166 INFO L93 Difference]: Finished difference Result 3378 states and 4879 transitions. [2020-10-14 22:30:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:30:53,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 22:30:53,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:53,181 INFO L225 Difference]: With dead ends: 3378 [2020-10-14 22:30:53,181 INFO L226 Difference]: Without dead ends: 2365 [2020-10-14 22:30:53,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:30:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2020-10-14 22:30:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2355. [2020-10-14 22:30:53,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2355 states. [2020-10-14 22:30:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3072 transitions. [2020-10-14 22:30:53,252 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3072 transitions. Word has length 108 [2020-10-14 22:30:53,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:53,254 INFO L479 AbstractCegarLoop]: Abstraction has 2355 states and 3072 transitions. [2020-10-14 22:30:53,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:30:53,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3072 transitions. [2020-10-14 22:30:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 22:30:53,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:53,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:53,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:30:53,256 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1497800735, now seen corresponding path program 1 times [2020-10-14 22:30:53,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:53,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995960992] [2020-10-14 22:30:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:53,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:53,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:55,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:55,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 22:30:55,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:30:55,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2363 [2020-10-14 22:30:55,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:55,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:30:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 22:30:55,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:30:55,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:55,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:55,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:55,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:55,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:55,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:30:55,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:55,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:55,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:55,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:56,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:56,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:30:56,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-14 22:30:56,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:56,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:30:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:30:56,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995960992] [2020-10-14 22:30:56,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:30:56,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:30:56,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299424683] [2020-10-14 22:30:56,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:30:56,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:56,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:30:56,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:30:56,439 INFO L87 Difference]: Start difference. First operand 2355 states and 3072 transitions. Second operand 7 states. [2020-10-14 22:31:11,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:11,714 INFO L93 Difference]: Finished difference Result 5235 states and 7156 transitions. [2020-10-14 22:31:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:31:11,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-14 22:31:11,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:11,734 INFO L225 Difference]: With dead ends: 5235 [2020-10-14 22:31:11,734 INFO L226 Difference]: Without dead ends: 3319 [2020-10-14 22:31:11,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:31:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2020-10-14 22:31:11,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2847. [2020-10-14 22:31:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2847 states. [2020-10-14 22:31:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3647 transitions. [2020-10-14 22:31:11,818 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3647 transitions. Word has length 143 [2020-10-14 22:31:11,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:11,818 INFO L479 AbstractCegarLoop]: Abstraction has 2847 states and 3647 transitions. [2020-10-14 22:31:11,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:31:11,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3647 transitions. [2020-10-14 22:31:11,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 22:31:11,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:11,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:11,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:31:11,821 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:11,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:11,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1357885877, now seen corresponding path program 1 times [2020-10-14 22:31:11,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:11,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381088205] [2020-10-14 22:31:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:11,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:12,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:12,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 22:31:12,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:31:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-10-14 22:31:12,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:12,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:31:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 22:31:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:13,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:13,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:13,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:31:13,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:13,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:13,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:13,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:13,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:31:13,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:13,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 22:31:13,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:13,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:31:13,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:31:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:31:13,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381088205] [2020-10-14 22:31:13,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:31:13,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 22:31:13,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604812242] [2020-10-14 22:31:13,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:31:13,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:13,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:31:13,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:31:13,395 INFO L87 Difference]: Start difference. First operand 2847 states and 3647 transitions. Second operand 8 states. [2020-10-14 22:31:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:36,116 INFO L93 Difference]: Finished difference Result 10751 states and 14261 transitions. [2020-10-14 22:31:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 22:31:36,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-10-14 22:31:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:36,152 INFO L225 Difference]: With dead ends: 10751 [2020-10-14 22:31:36,152 INFO L226 Difference]: Without dead ends: 6984 [2020-10-14 22:31:36,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:31:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6984 states. [2020-10-14 22:31:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6984 to 6507. [2020-10-14 22:31:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6507 states. [2020-10-14 22:31:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6507 states to 6507 states and 7653 transitions. [2020-10-14 22:31:36,332 INFO L78 Accepts]: Start accepts. Automaton has 6507 states and 7653 transitions. Word has length 149 [2020-10-14 22:31:36,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:36,333 INFO L479 AbstractCegarLoop]: Abstraction has 6507 states and 7653 transitions. [2020-10-14 22:31:36,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:31:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 6507 states and 7653 transitions. [2020-10-14 22:31:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 22:31:36,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:36,337 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:31:36,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:31:36,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:36,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:36,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1220861125, now seen corresponding path program 1 times [2020-10-14 22:31:36,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:36,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142929613] [2020-10-14 22:31:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:36,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:37,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:37,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 22:31:37,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:31:37,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-14 22:31:37,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:37,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:31:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:31:37,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:37,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:37,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:37,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:37,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:37,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:31:37,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:37,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:31:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:31:37,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:37,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:37,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:37,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:31:37,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:37,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:37,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:31:37,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:37,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:31:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:37,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:37,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:31:37,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:37,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 22:31:37,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:37,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:31:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:31:37,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142929613] [2020-10-14 22:31:37,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:37,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:31:37,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345354894] [2020-10-14 22:31:37,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:31:37,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:37,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:31:37,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:31:37,715 INFO L87 Difference]: Start difference. First operand 6507 states and 7653 transitions. Second operand 8 states. [2020-10-14 22:31:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:47,247 INFO L93 Difference]: Finished difference Result 13042 states and 15389 transitions. [2020-10-14 22:31:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:31:47,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2020-10-14 22:31:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:47,273 INFO L225 Difference]: With dead ends: 13042 [2020-10-14 22:31:47,273 INFO L226 Difference]: Without dead ends: 6541 [2020-10-14 22:31:47,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:31:47,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2020-10-14 22:31:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 6071. [2020-10-14 22:31:47,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6071 states. [2020-10-14 22:31:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6071 states to 6071 states and 6843 transitions. [2020-10-14 22:31:47,404 INFO L78 Accepts]: Start accepts. Automaton has 6071 states and 6843 transitions. Word has length 194 [2020-10-14 22:31:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:47,404 INFO L479 AbstractCegarLoop]: Abstraction has 6071 states and 6843 transitions. [2020-10-14 22:31:47,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:31:47,405 INFO L276 IsEmpty]: Start isEmpty. Operand 6071 states and 6843 transitions. [2020-10-14 22:31:47,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 22:31:47,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:47,408 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:31:47,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:31:47,408 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:47,409 INFO L82 PathProgramCache]: Analyzing trace with hash -472308479, now seen corresponding path program 1 times [2020-10-14 22:31:47,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:47,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709740903] [2020-10-14 22:31:47,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:47,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:49,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:51,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:51,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 22:31:51,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:31:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3658 [2020-10-14 22:31:51,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:51,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:31:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:31:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:51,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:51,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:51,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:31:51,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:51,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:51,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:51,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:51,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 22:31:51,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:51,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:31:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:31:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:51,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:31:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:51,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:51,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:31:51,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:51,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 22:31:51,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:51,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:51,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:51,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:51,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:31:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 55 proven. 73 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:31:51,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709740903] [2020-10-14 22:31:51,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:51,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:31:51,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744150351] [2020-10-14 22:31:51,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:31:51,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:51,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:31:51,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:31:51,919 INFO L87 Difference]: Start difference. First operand 6071 states and 6843 transitions. Second operand 10 states. [2020-10-14 22:32:07,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:07,004 INFO L93 Difference]: Finished difference Result 13168 states and 14869 transitions. [2020-10-14 22:32:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:32:07,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 196 [2020-10-14 22:32:07,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:07,036 INFO L225 Difference]: With dead ends: 13168 [2020-10-14 22:32:07,036 INFO L226 Difference]: Without dead ends: 7103 [2020-10-14 22:32:07,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-14 22:32:07,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7103 states. [2020-10-14 22:32:07,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7103 to 6983. [2020-10-14 22:32:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6983 states. [2020-10-14 22:32:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 7807 transitions. [2020-10-14 22:32:07,191 INFO L78 Accepts]: Start accepts. Automaton has 6983 states and 7807 transitions. Word has length 196 [2020-10-14 22:32:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:07,191 INFO L479 AbstractCegarLoop]: Abstraction has 6983 states and 7807 transitions. [2020-10-14 22:32:07,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:32:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 6983 states and 7807 transitions. [2020-10-14 22:32:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 22:32:07,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:07,197 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:32:07,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:32:07,197 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:07,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:07,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1304544812, now seen corresponding path program 1 times [2020-10-14 22:32:07,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:07,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139588143] [2020-10-14 22:32:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:07,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:12,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:12,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 22:32:12,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:32:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4690 [2020-10-14 22:32:12,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:12,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:32:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:32:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 22:32:12,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:12,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:12,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:12,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:12,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:12,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:32:12,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:12,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:32:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:32:12,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:12,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:12,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:12,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:32:12,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:12,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 22:32:12,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:12,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:32:12,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:12,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:32:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:12,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:12,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:12,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:12,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:32:12,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:32:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 22:32:12,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:12,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:32:12,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:32:12,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139588143] [2020-10-14 22:32:12,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:12,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:32:12,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393725523] [2020-10-14 22:32:12,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:32:12,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:12,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:32:12,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:32:12,599 INFO L87 Difference]: Start difference. First operand 6983 states and 7807 transitions. Second operand 5 states. [2020-10-14 22:32:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:24,126 INFO L93 Difference]: Finished difference Result 13540 states and 15352 transitions. [2020-10-14 22:32:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:32:24,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-14 22:32:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:24,148 INFO L225 Difference]: With dead ends: 13540 [2020-10-14 22:32:24,148 INFO L226 Difference]: Without dead ends: 7443 [2020-10-14 22:32:24,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 22:32:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7443 states. [2020-10-14 22:32:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7443 to 7426. [2020-10-14 22:32:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7426 states. [2020-10-14 22:32:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7426 states to 7426 states and 8377 transitions. [2020-10-14 22:32:24,279 INFO L78 Accepts]: Start accepts. Automaton has 7426 states and 8377 transitions. Word has length 207 [2020-10-14 22:32:24,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:24,280 INFO L479 AbstractCegarLoop]: Abstraction has 7426 states and 8377 transitions. [2020-10-14 22:32:24,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:32:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 7426 states and 8377 transitions. [2020-10-14 22:32:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 22:32:24,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:24,285 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, 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, 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 22:32:24,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:32:24,285 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:24,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1880293393, now seen corresponding path program 1 times [2020-10-14 22:32:24,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:24,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807730522] [2020-10-14 22:32:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:24,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:24,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:25,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:25,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:27,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:27,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-14 22:32:27,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:32:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2817 [2020-10-14 22:32:27,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:27,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:32:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:32:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-14 22:32:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:27,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:27,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:27,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:27,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:27,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:32:27,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:27,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:32:27,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:27,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:27,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:27,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:27,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:32:27,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:27,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 22:32:27,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:27,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:32:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:32:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:27,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:32:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:27,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:27,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:32:27,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:27,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 22:32:27,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:27,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:32:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:32:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:28,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:28,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:32:28,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 22:32:28,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:28,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:28,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:28,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:32:28,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 22:32:28,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807730522] [2020-10-14 22:32:28,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:28,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:32:28,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477477956] [2020-10-14 22:32:28,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:32:28,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:28,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:32:28,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:32:28,368 INFO L87 Difference]: Start difference. First operand 7426 states and 8377 transitions. Second operand 9 states. [2020-10-14 22:32:49,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:49,059 INFO L93 Difference]: Finished difference Result 16832 states and 19892 transitions. [2020-10-14 22:32:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:32:49,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 278 [2020-10-14 22:32:49,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:49,098 INFO L225 Difference]: With dead ends: 16832 [2020-10-14 22:32:49,098 INFO L226 Difference]: Without dead ends: 9391 [2020-10-14 22:32:49,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:32:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9391 states. [2020-10-14 22:32:49,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9391 to 9258. [2020-10-14 22:32:49,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9258 states. [2020-10-14 22:32:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9258 states to 9258 states and 10376 transitions. [2020-10-14 22:32:49,276 INFO L78 Accepts]: Start accepts. Automaton has 9258 states and 10376 transitions. Word has length 278 [2020-10-14 22:32:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:49,276 INFO L479 AbstractCegarLoop]: Abstraction has 9258 states and 10376 transitions. [2020-10-14 22:32:49,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:32:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 9258 states and 10376 transitions. [2020-10-14 22:32:49,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 22:32:49,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:49,283 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, 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, 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 22:32:49,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:32:49,284 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:49,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:49,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1199378777, now seen corresponding path program 1 times [2020-10-14 22:32:49,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:49,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507422928] [2020-10-14 22:32:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:49,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:50,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:52,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:52,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 22:32:52,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:32:52,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3556 [2020-10-14 22:32:52,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:52,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:52,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:52,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:32:52,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:32:52,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:53,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:53,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:53,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:53,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:53,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:32:53,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:53,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:53,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:32:53,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:53,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:32:53,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:53,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:53,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:53,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:32:53,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 22:32:53,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:53,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:32:53,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:32:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:53,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:53,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:53,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:32:53,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 22:32:53,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:53,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:32:53,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:32:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:53,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:53,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:32:53,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 22:32:53,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:53,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:32:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:32:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:32:53,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 169 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:32:53,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507422928] [2020-10-14 22:32:53,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:53,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:32:53,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352229340] [2020-10-14 22:32:53,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:32:53,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:53,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:32:53,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:32:53,995 INFO L87 Difference]: Start difference. First operand 9258 states and 10376 transitions. Second operand 7 states. [2020-10-14 22:33:11,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:11,955 INFO L93 Difference]: Finished difference Result 19169 states and 21632 transitions. [2020-10-14 22:33:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:33:11,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-14 22:33:11,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:11,991 INFO L225 Difference]: With dead ends: 19169 [2020-10-14 22:33:11,992 INFO L226 Difference]: Without dead ends: 10787 [2020-10-14 22:33:12,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:33:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10787 states. [2020-10-14 22:33:12,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10787 to 10630. [2020-10-14 22:33:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10630 states. [2020-10-14 22:33:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10630 states to 10630 states and 11902 transitions. [2020-10-14 22:33:12,215 INFO L78 Accepts]: Start accepts. Automaton has 10630 states and 11902 transitions. Word has length 301 [2020-10-14 22:33:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:12,216 INFO L479 AbstractCegarLoop]: Abstraction has 10630 states and 11902 transitions. [2020-10-14 22:33:12,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:33:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 10630 states and 11902 transitions. [2020-10-14 22:33:12,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-14 22:33:12,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:12,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2020-10-14 22:33:12,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:33:12,235 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:12,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1825873951, now seen corresponding path program 1 times [2020-10-14 22:33:12,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:12,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430080792] [2020-10-14 22:33:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:12,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:13,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:17,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:17,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-14 22:33:17,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:33:17,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 22:33:17,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:17,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:33:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:33:17,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 22:33:17,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:17,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:17,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:17,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:17,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:17,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:33:17,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:17,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:17,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:17,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:33:17,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:17,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:17,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:17,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:17,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:17,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 22:33:17,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:17,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:33:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:33:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:18,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:18,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:33:18,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 22:33:18,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:18,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:33:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:33:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:18,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:18,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:18,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:33:18,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 22:33:18,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:18,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:33:18,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:18,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-14 22:33:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:18,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:18,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:18,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:33:18,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:18,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:33:18,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:18,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:33:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:18,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 203 proven. 363 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 22:33:18,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430080792] [2020-10-14 22:33:18,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:18,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 22:33:18,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896321237] [2020-10-14 22:33:18,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 22:33:18,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:18,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 22:33:18,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:33:18,931 INFO L87 Difference]: Start difference. First operand 10630 states and 11902 transitions. Second operand 11 states. [2020-10-14 22:33:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:47,325 INFO L93 Difference]: Finished difference Result 26463 states and 31022 transitions. [2020-10-14 22:33:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 22:33:47,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 387 [2020-10-14 22:33:47,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:47,385 INFO L225 Difference]: With dead ends: 26463 [2020-10-14 22:33:47,385 INFO L226 Difference]: Without dead ends: 16709 [2020-10-14 22:33:47,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-14 22:33:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16709 states. [2020-10-14 22:33:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16709 to 16468. [2020-10-14 22:33:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16468 states. [2020-10-14 22:33:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16468 states to 16468 states and 18758 transitions. [2020-10-14 22:33:47,754 INFO L78 Accepts]: Start accepts. Automaton has 16468 states and 18758 transitions. Word has length 387 [2020-10-14 22:33:47,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:47,755 INFO L479 AbstractCegarLoop]: Abstraction has 16468 states and 18758 transitions. [2020-10-14 22:33:47,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 22:33:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 16468 states and 18758 transitions. [2020-10-14 22:33:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-14 22:33:47,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:47,765 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2020-10-14 22:33:47,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:33:47,766 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:47,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:47,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1568820339, now seen corresponding path program 1 times [2020-10-14 22:33:47,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:47,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588241026] [2020-10-14 22:33:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:48,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:51,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:51,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-14 22:33:51,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:33:51,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3279 [2020-10-14 22:33:51,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:51,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:33:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-10-14 22:33:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:33:51,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:51,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:51,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:51,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:51,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:51,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:33:51,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:51,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:51,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:51,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:51,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:51,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:33:51,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:51,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:51,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:51,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:33:51,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:33:51,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:51,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:51,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:51,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:33:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:51,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:51,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:33:51,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 22:33:51,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:51,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:33:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:51,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 22:33:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:51,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:51,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:33:51,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:33:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 22:33:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:51,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:33:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:51,901 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 124 proven. 4 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2020-10-14 22:33:51,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588241026] [2020-10-14 22:33:51,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:51,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:33:51,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426683741] [2020-10-14 22:33:51,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:33:51,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:51,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:33:51,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:33:51,903 INFO L87 Difference]: Start difference. First operand 16468 states and 18758 transitions. Second operand 6 states.