/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/Problem04_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:45:20,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:45:20,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:45:20,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:45:20,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:45:20,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:45:20,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:45:20,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:45:20,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:45:20,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:45:20,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:45:20,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:45:20,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:45:20,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:45:20,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:45:20,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:45:20,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:45:20,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:45:20,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:45:20,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:45:20,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:45:20,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:45:20,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:45:20,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:45:20,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:45:20,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:45:20,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:45:20,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:45:20,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:45:20,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:45:20,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:45:20,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:45:20,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:45:20,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:45:20,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:45:20,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:45:20,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:45:20,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:45:20,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:45:20,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:45:20,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:45:20,983 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 11:45:21,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:45:21,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:45:21,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:45:21,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:45:21,031 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:45:21,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:45:21,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:45:21,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:45:21,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:45:21,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:45:21,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:45:21,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:45:21,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:45:21,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:45:21,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:45:21,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:45:21,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:45:21,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:45:21,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:45:21,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:45:21,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:45:21,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:45:21,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:45:21,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:45:21,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:45:21,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:45:21,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:45:21,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:45:21,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:45:21,036 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 11:45:21,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:45:21,345 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:45:21,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:45:21,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:45:21,351 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:45:21,351 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label57.c [2020-10-12 11:45:21,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2453bacbd/88d9ba4bd60b4c4b95e640e96ea4bfa8/FLAGc48aea2ce [2020-10-12 11:45:22,195 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:45:22,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label57.c [2020-10-12 11:45:22,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2453bacbd/88d9ba4bd60b4c4b95e640e96ea4bfa8/FLAGc48aea2ce [2020-10-12 11:45:22,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2453bacbd/88d9ba4bd60b4c4b95e640e96ea4bfa8 [2020-10-12 11:45:22,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:45:22,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:45:22,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:45:22,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:45:22,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:45:22,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:45:22" (1/1) ... [2020-10-12 11:45:22,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236d82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:22, skipping insertion in model container [2020-10-12 11:45:22,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:45:22" (1/1) ... [2020-10-12 11:45:22,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:45:22,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:45:24,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:45:24,065 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:45:24,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:45:24,819 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:45:24,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:24 WrapperNode [2020-10-12 11:45:24,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:45:24,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:45:24,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:45:24,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:45:24,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:24" (1/1) ... [2020-10-12 11:45:24,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:24" (1/1) ... [2020-10-12 11:45:24,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:24" (1/1) ... [2020-10-12 11:45:24,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:24" (1/1) ... [2020-10-12 11:45:25,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:24" (1/1) ... [2020-10-12 11:45:25,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:24" (1/1) ... [2020-10-12 11:45:25,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:24" (1/1) ... [2020-10-12 11:45:25,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:45:25,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:45:25,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:45:25,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:45:25,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:24" (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 11:45:25,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:45:25,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:45:25,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:45:25,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:45:25,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:45:25,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:45:25,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:45:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:45:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:45:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:45:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:45:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:45:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:45:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:45:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:45:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:45:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:45:29,592 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:45:29,593 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:45:29,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:45:29 BoogieIcfgContainer [2020-10-12 11:45:29,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:45:29,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:45:29,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:45:29,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:45:29,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:45:22" (1/3) ... [2020-10-12 11:45:29,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e02da7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:45:29, skipping insertion in model container [2020-10-12 11:45:29,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:24" (2/3) ... [2020-10-12 11:45:29,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e02da7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:45:29, skipping insertion in model container [2020-10-12 11:45:29,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:45:29" (3/3) ... [2020-10-12 11:45:29,613 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label57.c [2020-10-12 11:45:29,624 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:45:29,633 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:45:29,647 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:45:29,678 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:45:29,678 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:45:29,678 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:45:29,678 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:45:29,679 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:45:29,679 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:45:29,679 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:45:29,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:45:29,716 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:45:29,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2020-10-12 11:45:29,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:45:29,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:45:29,760 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:45:29,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:45:29,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2131373141, now seen corresponding path program 1 times [2020-10-12 11:45:29,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:45:29,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752303374] [2020-10-12 11:45:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:45:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:30,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:35,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:35,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 820 [2020-10-12 11:45:35,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:45:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 11:45:35,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:45:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:45:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 814 [2020-10-12 11:45:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:45:36,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:45:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:36,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:36,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:36,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:45:36,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:45:36,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:45:36,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:45:36,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:45:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:45:36,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:45:37,532 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 11:45:37,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752303374] [2020-10-12 11:45:37,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:45:37,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 11:45:37,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682185668] [2020-10-12 11:45:37,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 11:45:37,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:45:37,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 11:45:37,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 11:45:37,562 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-12 11:45:45,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:45:45,464 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-12 11:45:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:45:45,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 806 [2020-10-12 11:45:45,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:45:45,508 INFO L225 Difference]: With dead ends: 2672 [2020-10-12 11:45:45,508 INFO L226 Difference]: Without dead ends: 1702 [2020-10-12 11:45:45,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:45:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-12 11:45:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-12 11:45:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-12 11:45:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3005 transitions. [2020-10-12 11:45:45,711 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3005 transitions. Word has length 806 [2020-10-12 11:45:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:45:45,714 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 3005 transitions. [2020-10-12 11:45:45,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 11:45:45,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3005 transitions. [2020-10-12 11:45:45,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-12 11:45:45,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:45:45,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:45:45,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:45:45,743 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:45:45,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:45:45,743 INFO L82 PathProgramCache]: Analyzing trace with hash -319229254, now seen corresponding path program 1 times [2020-10-12 11:45:45,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:45:45,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336737397] [2020-10-12 11:45:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:45:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:46,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:51,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:51,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 830 [2020-10-12 11:45:51,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:45:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 11:45:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:45:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 11:45:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 811 [2020-10-12 11:45:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:45:51,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:45:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:51,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:51,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:51,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:45:51,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:45:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:45:51,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:45:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:45:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:45:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:45:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:45:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:51,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:51,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:45:51,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:45:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:45:51,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:45:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:45:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 11:45:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-12 11:45:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:45:52,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336737397] [2020-10-12 11:45:52,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:45:52,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:45:52,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896618781] [2020-10-12 11:45:52,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:45:52,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:45:52,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:45:52,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:45:53,000 INFO L87 Difference]: Start difference. First operand 1689 states and 3005 transitions. Second operand 5 states. [2020-10-12 11:46:01,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:46:01,331 INFO L93 Difference]: Finished difference Result 5075 states and 9095 transitions. [2020-10-12 11:46:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:46:01,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 814 [2020-10-12 11:46:01,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:46:01,352 INFO L225 Difference]: With dead ends: 5075 [2020-10-12 11:46:01,352 INFO L226 Difference]: Without dead ends: 3392 [2020-10-12 11:46:01,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:46:01,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2020-10-12 11:46:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3379. [2020-10-12 11:46:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3379 states. [2020-10-12 11:46:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 5672 transitions. [2020-10-12 11:46:01,450 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 5672 transitions. Word has length 814 [2020-10-12 11:46:01,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:46:01,452 INFO L479 AbstractCegarLoop]: Abstraction has 3379 states and 5672 transitions. [2020-10-12 11:46:01,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:46:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 5672 transitions. [2020-10-12 11:46:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2020-10-12 11:46:01,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:46:01,489 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:01,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:46:01,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:46:01,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:46:01,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1471117709, now seen corresponding path program 1 times [2020-10-12 11:46:01,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:46:01,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430357801] [2020-10-12 11:46:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:46:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:01,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:01,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:06,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:06,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 895 [2020-10-12 11:46:06,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:46:06,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 11:46:06,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:46:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-12 11:46:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 811 [2020-10-12 11:46:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:46:07,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:46:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:07,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:07,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:46:07,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:07,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:46:07,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:07,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:46:07,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:07,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:46:07,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:46:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:46:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:07,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:07,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:46:07,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:07,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:46:07,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:46:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:46:07,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:46:07,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 11:46:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:07,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:07,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:46:07,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:07,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 11:46:07,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:46:07,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:07,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 11:46:07,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:46:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 11:46:08,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430357801] [2020-10-12 11:46:08,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:46:08,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:46:08,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59578467] [2020-10-12 11:46:08,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:46:08,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:46:08,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:46:08,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:46:08,918 INFO L87 Difference]: Start difference. First operand 3379 states and 5672 transitions. Second operand 5 states. [2020-10-12 11:46:18,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:46:18,034 INFO L93 Difference]: Finished difference Result 10145 states and 17224 transitions. [2020-10-12 11:46:18,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:46:18,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 877 [2020-10-12 11:46:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:46:18,076 INFO L225 Difference]: With dead ends: 10145 [2020-10-12 11:46:18,076 INFO L226 Difference]: Without dead ends: 6772 [2020-10-12 11:46:18,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:46:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2020-10-12 11:46:18,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6768. [2020-10-12 11:46:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6768 states. [2020-10-12 11:46:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6768 states to 6768 states and 9974 transitions. [2020-10-12 11:46:18,294 INFO L78 Accepts]: Start accepts. Automaton has 6768 states and 9974 transitions. Word has length 877 [2020-10-12 11:46:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:46:18,297 INFO L479 AbstractCegarLoop]: Abstraction has 6768 states and 9974 transitions. [2020-10-12 11:46:18,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:46:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6768 states and 9974 transitions. [2020-10-12 11:46:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2020-10-12 11:46:18,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:46:18,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:46:18,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:46:18,330 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:46:18,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:46:18,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1498693272, now seen corresponding path program 1 times [2020-10-12 11:46:18,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:46:18,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733505273] [2020-10-12 11:46:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:46:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:18,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:18,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:23,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:23,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 947 [2020-10-12 11:46:23,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:46:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 11:46:23,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:46:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-12 11:46:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 713 [2020-10-12 11:46:23,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:46:27,635 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-12 11:46:27,819 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-12 11:46:27,953 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-12 11:46:28,223 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-10-12 11:46:28,407 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-10-12 11:46:28,544 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-12 11:46:28,699 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-10-12 11:46:28,913 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 42 [2020-10-12 11:46:29,062 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 39 [2020-10-12 11:46:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:46:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:29,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:29,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:29,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:46:29,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:29,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:46:29,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:46:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:46:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:46:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:46:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:29,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:29,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:29,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:46:29,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 11:46:29,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:46:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 11:46:29,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:46:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 121 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:46:36,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733505273] [2020-10-12 11:46:36,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:46:36,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:46:36,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546549745] [2020-10-12 11:46:36,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:46:36,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:46:36,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:46:36,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:46:36,857 INFO L87 Difference]: Start difference. First operand 6768 states and 9974 transitions. Second operand 19 states. [2020-10-12 11:46:38,509 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:46:38,677 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:46:42,257 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-12 11:46:44,247 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 11:46:45,075 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:46:48,205 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2020-10-12 11:46:49,884 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-10-12 11:46:51,756 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-12 11:46:52,059 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-10-12 11:46:52,740 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-12 11:46:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:46:59,131 INFO L93 Difference]: Finished difference Result 14238 states and 21407 transitions. [2020-10-12 11:46:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:46:59,132 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 931 [2020-10-12 11:46:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:46:59,166 INFO L225 Difference]: With dead ends: 14238 [2020-10-12 11:46:59,167 INFO L226 Difference]: Without dead ends: 7476 [2020-10-12 11:46:59,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:46:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7476 states. [2020-10-12 11:46:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7476 to 7472. [2020-10-12 11:46:59,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7472 states. [2020-10-12 11:46:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7472 states to 7472 states and 10693 transitions. [2020-10-12 11:46:59,372 INFO L78 Accepts]: Start accepts. Automaton has 7472 states and 10693 transitions. Word has length 931 [2020-10-12 11:46:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:46:59,374 INFO L479 AbstractCegarLoop]: Abstraction has 7472 states and 10693 transitions. [2020-10-12 11:46:59,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:46:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7472 states and 10693 transitions. [2020-10-12 11:46:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2020-10-12 11:46:59,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:46:59,408 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:46:59,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:46:59,409 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:46:59,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:46:59,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1584876133, now seen corresponding path program 1 times [2020-10-12 11:46:59,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:46:59,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500546702] [2020-10-12 11:46:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:46:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:59,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:00,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:04,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:04,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 954 [2020-10-12 11:47:04,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:47:04,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-12 11:47:04,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:47:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-12 11:47:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 547 [2020-10-12 11:47:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:06,779 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-10-12 11:47:06,932 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2020-10-12 11:47:07,167 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 50 [2020-10-12 11:47:07,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:47:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:07,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:07,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:07,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:47:07,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:47:07,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:47:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:47:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:07,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:47:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:07,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:07,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:47:07,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:47:07,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:47:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:47:07,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:07,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 11:47:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:08,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:08,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 11:47:08,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:08,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 11:47:08,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:47:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 11:47:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:47:13,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500546702] [2020-10-12 11:47:13,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:47:13,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:47:13,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246228572] [2020-10-12 11:47:13,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:47:13,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:47:13,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:47:13,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:47:13,764 INFO L87 Difference]: Start difference. First operand 7472 states and 10693 transitions. Second operand 17 states. [2020-10-12 11:47:15,735 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:47:21,383 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:47:21,582 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-12 11:47:23,643 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-10-12 11:47:24,405 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 114 [2020-10-12 11:47:28,090 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-10-12 11:47:28,407 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-10-12 11:47:29,235 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-10-12 11:47:30,970 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-10-12 11:47:31,327 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-12 11:47:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:47:33,358 INFO L93 Difference]: Finished difference Result 15482 states and 22507 transitions. [2020-10-12 11:47:33,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:47:33,361 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 936 [2020-10-12 11:47:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:47:33,401 INFO L225 Difference]: With dead ends: 15482 [2020-10-12 11:47:33,401 INFO L226 Difference]: Without dead ends: 8016 [2020-10-12 11:47:33,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:47:33,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8016 states. [2020-10-12 11:47:33,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8016 to 8012. [2020-10-12 11:47:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8012 states. [2020-10-12 11:47:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8012 states to 8012 states and 11245 transitions. [2020-10-12 11:47:33,598 INFO L78 Accepts]: Start accepts. Automaton has 8012 states and 11245 transitions. Word has length 936 [2020-10-12 11:47:33,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:47:33,600 INFO L479 AbstractCegarLoop]: Abstraction has 8012 states and 11245 transitions. [2020-10-12 11:47:33,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:47:33,600 INFO L276 IsEmpty]: Start isEmpty. Operand 8012 states and 11245 transitions. [2020-10-12 11:47:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-12 11:47:33,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:47:33,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:47:33,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:47:33,634 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:47:33,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:47:33,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1787055908, now seen corresponding path program 1 times [2020-10-12 11:47:33,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:47:33,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421952655] [2020-10-12 11:47:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:47:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:38,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:38,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1013 [2020-10-12 11:47:38,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:47:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-12 11:47:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:47:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-12 11:47:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 657 [2020-10-12 11:47:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:41,428 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2020-10-12 11:47:41,558 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-10-12 11:47:41,806 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-12 11:47:41,972 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2020-10-12 11:47:42,217 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 40 [2020-10-12 11:47:42,482 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 47 [2020-10-12 11:47:42,866 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 46 [2020-10-12 11:47:43,174 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 42 [2020-10-12 11:47:43,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:47:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:43,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:43,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:47:43,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:47:43,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:47:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:47:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:47:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:43,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:43,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 11:47:43,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:43,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-12 11:47:43,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:47:43,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:43,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-12 11:47:43,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:47:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 187 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:47:50,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421952655] [2020-10-12 11:47:50,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:47:50,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:47:50,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468988954] [2020-10-12 11:47:50,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:47:50,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:47:50,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:47:50,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:47:50,093 INFO L87 Difference]: Start difference. First operand 8012 states and 11245 transitions. Second operand 17 states. [2020-10-12 11:47:59,697 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-10-12 11:48:02,705 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-12 11:48:03,012 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2020-10-12 11:48:10,270 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-10-12 11:48:11,397 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2020-10-12 11:48:11,727 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-10-12 11:48:13,724 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 100 [2020-10-12 11:48:16,683 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 98 [2020-10-12 11:48:18,603 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2020-10-12 11:48:18,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:48:18,878 INFO L93 Difference]: Finished difference Result 16672 states and 23835 transitions. [2020-10-12 11:48:18,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:48:18,879 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 997 [2020-10-12 11:48:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:48:18,906 INFO L225 Difference]: With dead ends: 16672 [2020-10-12 11:48:18,907 INFO L226 Difference]: Without dead ends: 8666 [2020-10-12 11:48:18,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:48:18,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8666 states. [2020-10-12 11:48:19,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8666 to 8662. [2020-10-12 11:48:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2020-10-12 11:48:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 11909 transitions. [2020-10-12 11:48:19,093 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 11909 transitions. Word has length 997 [2020-10-12 11:48:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:48:19,095 INFO L479 AbstractCegarLoop]: Abstraction has 8662 states and 11909 transitions. [2020-10-12 11:48:19,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:48:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 11909 transitions. [2020-10-12 11:48:19,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2020-10-12 11:48:19,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:48:19,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:48:19,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:48:19,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:48:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:48:19,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1905885444, now seen corresponding path program 1 times [2020-10-12 11:48:19,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:48:19,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432139295] [2020-10-12 11:48:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:48:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:24,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:24,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1029 [2020-10-12 11:48:24,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:48:24,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 11:48:24,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:48:24,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-12 11:48:24,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 547 [2020-10-12 11:48:24,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:48:26,461 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-12 11:48:26,620 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-12 11:48:26,777 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-12 11:48:26,948 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-12 11:48:27,205 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-10-12 11:48:27,403 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-12 11:48:27,571 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-12 11:48:27,798 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2020-10-12 11:48:28,057 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 48 [2020-10-12 11:48:28,329 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 44 [2020-10-12 11:48:28,578 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 40 [2020-10-12 11:48:28,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:48:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:28,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:28,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:48:28,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:48:28,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:48:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:48:28,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:28,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:48:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:28,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:28,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:28,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-12 11:48:28,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 11:48:28,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:48:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-12 11:48:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 203 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:48:37,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432139295] [2020-10-12 11:48:37,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:48:37,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:48:37,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849708493] [2020-10-12 11:48:37,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:48:37,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:48:37,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:48:37,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:48:37,305 INFO L87 Difference]: Start difference. First operand 8662 states and 11909 transitions. Second operand 17 states. [2020-10-12 11:48:40,493 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-12 11:48:40,715 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-12 11:48:47,449 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-12 11:48:47,683 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-12 11:48:50,360 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 119 [2020-10-12 11:48:51,212 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-10-12 11:48:55,278 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:48:55,492 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-12 11:48:56,411 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106