/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=BIGGEST --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/Problem12_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:21:42,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:21:42,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:21:42,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:21:42,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:21:42,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:21:42,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:21:42,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:21:42,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:21:42,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:21:42,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:21:42,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:21:42,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:21:42,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:21:42,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:21:42,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:21:42,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:21:42,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:21:42,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:21:42,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:21:42,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:21:42,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:21:42,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:21:42,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:21:42,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:21:42,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:21:42,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:21:42,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:21:42,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:21:42,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:21:42,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:21:42,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:21:42,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:21:42,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:21:42,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:21:42,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:21:42,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:21:42,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:21:42,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:21:42,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:21:42,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:21:42,932 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 [2020-10-12 13:21:42,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:21:42,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:21:42,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:21:42,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:21:42,975 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:21:42,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:21:42,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:21:42,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:21:42,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:21:42,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:21:42,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:21:42,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:21:42,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:21:42,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:21:42,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:21:42,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:21:42,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:21:42,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:21:42,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:21:42,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:21:42,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:21:42,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:21:42,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:21:42,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:21:42,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:21:42,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:21:42,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:21:42,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:21:42,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:21:42,981 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:21:43,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:21:43,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:21:43,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:21:43,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:21:43,288 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:21:43,288 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17.c [2020-10-12 13:21:43,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c55ea3be3/0829e18452724f46a47ac882868a4ce3/FLAG82d9eb871 [2020-10-12 13:21:44,165 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:21:44,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label17.c [2020-10-12 13:21:44,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c55ea3be3/0829e18452724f46a47ac882868a4ce3/FLAG82d9eb871 [2020-10-12 13:21:44,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c55ea3be3/0829e18452724f46a47ac882868a4ce3 [2020-10-12 13:21:44,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:21:44,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:21:44,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:21:44,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:21:44,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:21:44,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:21:44" (1/1) ... [2020-10-12 13:21:44,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cc86df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:44, skipping insertion in model container [2020-10-12 13:21:44,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:21:44" (1/1) ... [2020-10-12 13:21:44,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:21:44,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:21:46,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:21:46,346 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:21:47,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:21:47,125 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:21:47,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47 WrapperNode [2020-10-12 13:21:47,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:21:47,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:21:47,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:21:47,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:21:47,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:21:47,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:21:47,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:21:47,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:21:47,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (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 [2020-10-12 13:21:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:21:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:21:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:21:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:21:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:21:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:21:47,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:21:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:21:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:21:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:21:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:21:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:21:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:21:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:21:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:21:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:21:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:21:53,858 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:21:53,858 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:21:53,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:21:53 BoogieIcfgContainer [2020-10-12 13:21:53,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:21:53,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:21:53,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:21:53,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:21:53,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:21:44" (1/3) ... [2020-10-12 13:21:53,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3155a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:21:53, skipping insertion in model container [2020-10-12 13:21:53,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (2/3) ... [2020-10-12 13:21:53,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3155a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:21:53, skipping insertion in model container [2020-10-12 13:21:53,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:21:53" (3/3) ... [2020-10-12 13:21:53,878 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label17.c [2020-10-12 13:21:53,888 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:21:53,897 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:21:53,913 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:21:53,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:21:53,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:21:53,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:21:53,944 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:21:53,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:21:53,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:21:53,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:21:53,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:21:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:21:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 13:21:53,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:53,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:21:53,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:53,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:53,996 INFO L82 PathProgramCache]: Analyzing trace with hash 648916661, now seen corresponding path program 1 times [2020-10-12 13:21:54,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:54,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885353464] [2020-10-12 13:21:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:54,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:54,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:54,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 13:21:54,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:54,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-12 13:21:54,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:21:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:21:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 13:21:54,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:21:54,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:54,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:54,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:54,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:54,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:21:54,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:21:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:21:54,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885353464] [2020-10-12 13:21:54,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:21:54,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 13:21:54,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824288717] [2020-10-12 13:21:54,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:21:54,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:54,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:21:54,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:21:54,802 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-12 13:22:07,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:07,194 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2020-10-12 13:22:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:22:07,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-12 13:22:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:07,262 INFO L225 Difference]: With dead ends: 3253 [2020-10-12 13:22:07,263 INFO L226 Difference]: Without dead ends: 2346 [2020-10-12 13:22:07,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:22:07,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-12 13:22:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-12 13:22:07,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-12 13:22:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2020-10-12 13:22:07,471 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 46 [2020-10-12 13:22:07,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:07,474 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2020-10-12 13:22:07,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:22:07,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2020-10-12 13:22:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 13:22:07,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:07,492 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:07,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:22:07,493 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:07,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:07,495 INFO L82 PathProgramCache]: Analyzing trace with hash -779589284, now seen corresponding path program 1 times [2020-10-12 13:22:07,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:07,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742317254] [2020-10-12 13:22:07,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:07,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:07,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:08,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:08,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 13:22:08,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:22:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-12 13:22:08,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:22:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 13:22:08,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:08,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:08,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:08,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:08,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:22:08,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:08,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:08,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:09,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:09,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:22:09,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:09,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-12 13:22:09,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:22:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:22:09,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742317254] [2020-10-12 13:22:09,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:09,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:22:09,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623252662] [2020-10-12 13:22:09,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:22:09,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:09,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:22:09,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:22:09,239 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 7 states. [2020-10-12 13:22:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:20,135 INFO L93 Difference]: Finished difference Result 7141 states and 11906 transitions. [2020-10-12 13:22:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:22:20,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-12 13:22:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:20,178 INFO L225 Difference]: With dead ends: 7141 [2020-10-12 13:22:20,178 INFO L226 Difference]: Without dead ends: 4816 [2020-10-12 13:22:20,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:22:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2020-10-12 13:22:20,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 4733. [2020-10-12 13:22:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4733 states. [2020-10-12 13:22:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4733 states to 4733 states and 6865 transitions. [2020-10-12 13:22:20,367 INFO L78 Accepts]: Start accepts. Automaton has 4733 states and 6865 transitions. Word has length 124 [2020-10-12 13:22:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:20,369 INFO L479 AbstractCegarLoop]: Abstraction has 4733 states and 6865 transitions. [2020-10-12 13:22:20,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:22:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4733 states and 6865 transitions. [2020-10-12 13:22:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-12 13:22:20,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:20,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:20,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:22:20,377 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1395792607, now seen corresponding path program 1 times [2020-10-12 13:22:20,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:20,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392064045] [2020-10-12 13:22:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:20,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:20,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:24,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:24,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-12 13:22:24,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:22:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4051 [2020-10-12 13:22:24,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:22:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:22:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:24,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:24,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:24,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:24,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:24,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:24,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:22:24,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:24,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:24,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:24,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:22:24,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 13:22:24,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:22:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:24,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 13:22:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:25,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:25,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:22:25,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 13:22:25,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:22:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 13:22:25,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392064045] [2020-10-12 13:22:25,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:25,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:22:25,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996022320] [2020-10-12 13:22:25,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:22:25,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:25,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:22:25,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:22:25,168 INFO L87 Difference]: Start difference. First operand 4733 states and 6865 transitions. Second operand 8 states. [2020-10-12 13:22:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:41,867 INFO L93 Difference]: Finished difference Result 19200 states and 29495 transitions. [2020-10-12 13:22:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:22:41,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-10-12 13:22:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:41,954 INFO L225 Difference]: With dead ends: 19200 [2020-10-12 13:22:41,955 INFO L226 Difference]: Without dead ends: 14473 [2020-10-12 13:22:41,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:22:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14473 states. [2020-10-12 13:22:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14473 to 14388. [2020-10-12 13:22:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14388 states. [2020-10-12 13:22:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14388 states to 14388 states and 20204 transitions. [2020-10-12 13:22:42,404 INFO L78 Accepts]: Start accepts. Automaton has 14388 states and 20204 transitions. Word has length 198 [2020-10-12 13:22:42,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:42,407 INFO L479 AbstractCegarLoop]: Abstraction has 14388 states and 20204 transitions. [2020-10-12 13:22:42,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:22:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 14388 states and 20204 transitions. [2020-10-12 13:22:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-12 13:22:42,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:42,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:42,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:22:42,412 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:42,413 INFO L82 PathProgramCache]: Analyzing trace with hash 945666401, now seen corresponding path program 1 times [2020-10-12 13:22:42,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:42,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656657289] [2020-10-12 13:22:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:43,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:43,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-12 13:22:43,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:22:43,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1266 [2020-10-12 13:22:43,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:22:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-12 13:22:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:43,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:43,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:43,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:43,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:43,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:22:43,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:43,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:43,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:44,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:44,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:44,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 13:22:44,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-12 13:22:44,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:44,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:22:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:22:44,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656657289] [2020-10-12 13:22:44,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:44,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:22:44,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595124123] [2020-10-12 13:22:44,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:22:44,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:44,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:22:44,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:22:44,628 INFO L87 Difference]: Start difference. First operand 14388 states and 20204 transitions. Second operand 6 states. [2020-10-12 13:22:54,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:54,624 INFO L93 Difference]: Finished difference Result 33609 states and 47069 transitions. [2020-10-12 13:22:54,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:22:54,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2020-10-12 13:22:54,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:54,702 INFO L225 Difference]: With dead ends: 33609 [2020-10-12 13:22:54,702 INFO L226 Difference]: Without dead ends: 19227 [2020-10-12 13:22:54,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:22:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19227 states. [2020-10-12 13:22:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19227 to 19159. [2020-10-12 13:22:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19159 states. [2020-10-12 13:22:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19159 states to 19159 states and 26185 transitions. [2020-10-12 13:22:55,216 INFO L78 Accepts]: Start accepts. Automaton has 19159 states and 26185 transitions. Word has length 199 [2020-10-12 13:22:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:55,219 INFO L479 AbstractCegarLoop]: Abstraction has 19159 states and 26185 transitions. [2020-10-12 13:22:55,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:22:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 19159 states and 26185 transitions. [2020-10-12 13:22:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-12 13:22:55,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:55,224 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:22:55,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:22:55,225 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:55,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1376280640, now seen corresponding path program 1 times [2020-10-12 13:22:55,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:55,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657714310] [2020-10-12 13:22:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:55,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:56,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:58,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:00,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-12 13:23:00,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:23:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4821 [2020-10-12 13:23:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:23:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:23:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-12 13:23:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:00,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:00,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:00,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:00,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:23:00,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:23:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:00,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:00,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:00,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:00,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:23:00,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:00,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-12 13:23:00,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:23:00,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:00,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 13:23:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:00,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:00,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:23:00,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:00,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 13:23:00,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:23:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 79 proven. 80 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:23:00,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657714310] [2020-10-12 13:23:00,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:00,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:23:00,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760565186] [2020-10-12 13:23:00,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:23:00,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:00,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:23:00,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:23:00,789 INFO L87 Difference]: Start difference. First operand 19159 states and 26185 transitions. Second operand 8 states. [2020-10-12 13:23:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:14,723 INFO L93 Difference]: Finished difference Result 56994 states and 80823 transitions. [2020-10-12 13:23:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:23:14,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-12 13:23:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:14,878 INFO L225 Difference]: With dead ends: 56994 [2020-10-12 13:23:14,878 INFO L226 Difference]: Without dead ends: 37841 [2020-10-12 13:23:14,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:23:14,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37841 states. [2020-10-12 13:23:15,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37841 to 30706. [2020-10-12 13:23:15,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30706 states. [2020-10-12 13:23:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30706 states to 30706 states and 41426 transitions. [2020-10-12 13:23:15,782 INFO L78 Accepts]: Start accepts. Automaton has 30706 states and 41426 transitions. Word has length 217 [2020-10-12 13:23:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:15,783 INFO L479 AbstractCegarLoop]: Abstraction has 30706 states and 41426 transitions. [2020-10-12 13:23:15,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:23:15,783 INFO L276 IsEmpty]: Start isEmpty. Operand 30706 states and 41426 transitions. [2020-10-12 13:23:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-12 13:23:15,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:15,789 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:15,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:23:15,789 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:15,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:15,790 INFO L82 PathProgramCache]: Analyzing trace with hash -996883098, now seen corresponding path program 1 times [2020-10-12 13:23:15,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:15,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429863430] [2020-10-12 13:23:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:15,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:18,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:18,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-12 13:23:18,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:18,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2415 [2020-10-12 13:23:18,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:23:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:23:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:23:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:18,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:18,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:18,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:18,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:23:18,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:23:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:18,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:18,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:18,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:18,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:23:18,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:18,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 13:23:18,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:23:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 13:23:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:18,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:18,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:18,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:23:18,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:18,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:23:18,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:18,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:18,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:23:18,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:18,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 78 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:23:19,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429863430] [2020-10-12 13:23:19,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:19,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:23:19,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180646074] [2020-10-12 13:23:19,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:23:19,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:19,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:23:19,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:23:19,126 INFO L87 Difference]: Start difference. First operand 30706 states and 41426 transitions. Second operand 7 states. [2020-10-12 13:23:33,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:33,466 INFO L93 Difference]: Finished difference Result 67185 states and 90058 transitions. [2020-10-12 13:23:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:23:33,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-12 13:23:33,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:33,606 INFO L225 Difference]: With dead ends: 67185 [2020-10-12 13:23:33,606 INFO L226 Difference]: Without dead ends: 36485 [2020-10-12 13:23:33,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:23:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36485 states. [2020-10-12 13:23:34,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36485 to 36280. [2020-10-12 13:23:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36280 states. [2020-10-12 13:23:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36280 states to 36280 states and 47864 transitions. [2020-10-12 13:23:34,550 INFO L78 Accepts]: Start accepts. Automaton has 36280 states and 47864 transitions. Word has length 267 [2020-10-12 13:23:34,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:34,551 INFO L479 AbstractCegarLoop]: Abstraction has 36280 states and 47864 transitions. [2020-10-12 13:23:34,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:23:34,551 INFO L276 IsEmpty]: Start isEmpty. Operand 36280 states and 47864 transitions. [2020-10-12 13:23:34,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-12 13:23:34,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:34,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:34,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:23:34,557 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:34,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1209182545, now seen corresponding path program 1 times [2020-10-12 13:23:34,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:34,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099704054] [2020-10-12 13:23:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:34,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:35,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:35,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-12 13:23:35,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-10-12 13:23:35,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 272 [2020-10-12 13:23:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 13:23:35,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:35,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:35,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:35,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:35,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:35,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:23:35,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:35,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:35,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:35,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:35,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:35,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:35,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:23:35,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 13:23:35,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:35,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:35,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:23:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:35,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:36,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:36,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 13:23:36,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 13:23:36,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:23:36,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:23:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 13:23:36,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099704054] [2020-10-12 13:23:36,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:36,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:23:36,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892153463] [2020-10-12 13:23:36,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:23:36,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:36,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:23:36,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:23:36,253 INFO L87 Difference]: Start difference. First operand 36280 states and 47864 transitions. Second operand 6 states. [2020-10-12 13:23:54,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:54,905 INFO L93 Difference]: Finished difference Result 74962 states and 98706 transitions. [2020-10-12 13:23:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:23:54,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 306 [2020-10-12 13:23:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:55,019 INFO L225 Difference]: With dead ends: 74962 [2020-10-12 13:23:55,019 INFO L226 Difference]: Without dead ends: 38688 [2020-10-12 13:23:55,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:23:55,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38688 states. [2020-10-12 13:23:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38688 to 36272. [2020-10-12 13:23:55,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36272 states. [2020-10-12 13:23:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36272 states to 36272 states and 45296 transitions. [2020-10-12 13:23:55,629 INFO L78 Accepts]: Start accepts. Automaton has 36272 states and 45296 transitions. Word has length 306 [2020-10-12 13:23:55,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:55,630 INFO L479 AbstractCegarLoop]: Abstraction has 36272 states and 45296 transitions. [2020-10-12 13:23:55,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:23:55,630 INFO L276 IsEmpty]: Start isEmpty. Operand 36272 states and 45296 transitions. [2020-10-12 13:23:55,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-12 13:23:55,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:55,640 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:23:55,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:23:55,640 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:55,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:55,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1526783953, now seen corresponding path program 1 times [2020-10-12 13:23:55,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:55,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102214170] [2020-10-12 13:23:55,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:55,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:58,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:58,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-12 13:23:58,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:58,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2402 [2020-10-12 13:23:58,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:23:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:23:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:58,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:58,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:58,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:58,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:23:58,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:58,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:58,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:58,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:58,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:23:58,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:58,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 13:23:58,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:23:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:58,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:23:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:58,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:58,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:23:58,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 13:23:58,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 13:23:58,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:58,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-12 13:23:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:58,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:58,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:58,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:23:58,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 13:23:58,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:23:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:58,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 239 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 13:23:58,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102214170] [2020-10-12 13:23:58,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:58,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:23:58,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542533827] [2020-10-12 13:23:58,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:23:58,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:58,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:23:58,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:23:58,894 INFO L87 Difference]: Start difference. First operand 36272 states and 45296 transitions. Second operand 7 states. [2020-10-12 13:24:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:19,656 INFO L93 Difference]: Finished difference Result 88053 states and 114749 transitions. [2020-10-12 13:24:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:24:19,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 385 [2020-10-12 13:24:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:19,764 INFO L225 Difference]: With dead ends: 88053 [2020-10-12 13:24:19,764 INFO L226 Difference]: Without dead ends: 51787 [2020-10-12 13:24:19,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:24:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51787 states. [2020-10-12 13:24:21,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51787 to 51577. [2020-10-12 13:24:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51577 states. [2020-10-12 13:24:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51577 states to 51577 states and 66111 transitions. [2020-10-12 13:24:22,045 INFO L78 Accepts]: Start accepts. Automaton has 51577 states and 66111 transitions. Word has length 385 [2020-10-12 13:24:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:22,046 INFO L479 AbstractCegarLoop]: Abstraction has 51577 states and 66111 transitions. [2020-10-12 13:24:22,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:24:22,046 INFO L276 IsEmpty]: Start isEmpty. Operand 51577 states and 66111 transitions. [2020-10-12 13:24:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-12 13:24:22,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:22,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:24:22,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:24:22,059 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:22,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1101020553, now seen corresponding path program 1 times [2020-10-12 13:24:22,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:22,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759883634] [2020-10-12 13:24:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:22,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:25,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:25,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-12 13:24:25,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:24:25,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3584 [2020-10-12 13:24:25,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:24:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:24:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 13:24:25,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:26,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:26,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:26,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:26,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:26,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:24:26,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:26,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:26,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:26,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:24:26,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:26,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 13:24:26,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:26,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:26,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:24:26,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:26,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:24:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:26,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:26,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:24:26,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:26,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-12 13:24:26,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:24:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 13:24:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-12 13:24:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:26,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:26,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:26,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:24:26,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 13:24:26,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:24:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 309 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 13:24:26,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759883634] [2020-10-12 13:24:26,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:26,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:24:26,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194199620] [2020-10-12 13:24:26,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:24:26,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:26,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:24:26,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:24:26,975 INFO L87 Difference]: Start difference. First operand 51577 states and 66111 transitions. Second operand 9 states. [2020-10-12 13:25:11,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:25:11,290 INFO L93 Difference]: Finished difference Result 137210 states and 181688 transitions. [2020-10-12 13:25:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 13:25:11,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 389 [2020-10-12 13:25:11,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:25:11,544 INFO L225 Difference]: With dead ends: 137210 [2020-10-12 13:25:11,545 INFO L226 Difference]: Without dead ends: 85639 [2020-10-12 13:25:11,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-12 13:25:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85639 states. [2020-10-12 13:25:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85639 to 82296. [2020-10-12 13:25:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82296 states. [2020-10-12 13:25:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82296 states to 82296 states and 107578 transitions. [2020-10-12 13:25:13,112 INFO L78 Accepts]: Start accepts. Automaton has 82296 states and 107578 transitions. Word has length 389 [2020-10-12 13:25:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:25:13,113 INFO L479 AbstractCegarLoop]: Abstraction has 82296 states and 107578 transitions. [2020-10-12 13:25:13,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:25:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 82296 states and 107578 transitions. [2020-10-12 13:25:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-12 13:25:13,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:25:13,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:25:13,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:25:13,125 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:25:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:25:13,126 INFO L82 PathProgramCache]: Analyzing trace with hash -220714070, now seen corresponding path program 1 times [2020-10-12 13:25:13,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:25:13,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4351155] [2020-10-12 13:25:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:25:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:13,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:13,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:16,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:16,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-12 13:25:16,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:25:16,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3012 [2020-10-12 13:25:16,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:25:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:25:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-12 13:25:16,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:25:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:16,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:16,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:25:16,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:16,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:25:16,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:25:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:25:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:25:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:25:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:16,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:16,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:16,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:25:16,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:16,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 13:25:16,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:25:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:25:16,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:25:16,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:16,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:25:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:16,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:16,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:25:16,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 13:25:16,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:25:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:25:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:25:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-12 13:25:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:16,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:17,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:17,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:25:17,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:17,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:25:17,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:25:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:25:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:25:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 263 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 13:25:17,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4351155] [2020-10-12 13:25:17,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:25:17,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:25:17,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470950344] [2020-10-12 13:25:17,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:25:17,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:25:17,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:25:17,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:25:17,152 INFO L87 Difference]: Start difference. First operand 82296 states and 107578 transitions. Second operand 7 states.