/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:40:47,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:40:47,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:40:48,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:40:48,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:40:48,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:40:48,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:40:48,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:40:48,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:40:48,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:40:48,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:40:48,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:40:48,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:40:48,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:40:48,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:40:48,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:40:48,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:40:48,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:40:48,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:40:48,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:40:48,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:40:48,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:40:48,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:40:48,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:40:48,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:40:48,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:40:48,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:40:48,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:40:48,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:40:48,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:40:48,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:40:48,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:40:48,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:40:48,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:40:48,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:40:48,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:40:48,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:40:48,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:40:48,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:40:48,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:40:48,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:40:48,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:40:48,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:40:48,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:40:48,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:40:48,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:40:48,071 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:40:48,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:40:48,071 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:40:48,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:40:48,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:40:48,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:40:48,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:40:48,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:40:48,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:40:48,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:40:48,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:40:48,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:40:48,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:40:48,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:40:48,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:40:48,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:40:48,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:40:48,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:40:48,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:40:48,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:40:48,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:40:48,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:40:48,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:40:48,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:40:48,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:40:48,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:40:48,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:40:48,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:40:48,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:40:48,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:40:48,464 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:40:48,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44.c [2020-10-13 08:40:48,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63497192e/c82d9398859a4c7bb6c4b72a28edada8/FLAGbf80915a2 [2020-10-13 08:40:49,508 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:40:49,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label44.c [2020-10-13 08:40:49,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63497192e/c82d9398859a4c7bb6c4b72a28edada8/FLAGbf80915a2 [2020-10-13 08:40:49,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63497192e/c82d9398859a4c7bb6c4b72a28edada8 [2020-10-13 08:40:49,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:40:49,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:40:49,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:40:49,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:40:49,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:40:49,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:40:49" (1/1) ... [2020-10-13 08:40:49,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c286c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:49, skipping insertion in model container [2020-10-13 08:40:49,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:40:49" (1/1) ... [2020-10-13 08:40:49,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:40:50,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:40:51,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:40:51,872 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:40:52,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:40:52,648 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:40:52,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:52 WrapperNode [2020-10-13 08:40:52,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:40:52,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:40:52,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:40:52,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:40:52,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:52" (1/1) ... [2020-10-13 08:40:52,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:52" (1/1) ... [2020-10-13 08:40:52,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:52" (1/1) ... [2020-10-13 08:40:52,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:52" (1/1) ... [2020-10-13 08:40:52,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:52" (1/1) ... [2020-10-13 08:40:53,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:52" (1/1) ... [2020-10-13 08:40:53,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:52" (1/1) ... [2020-10-13 08:40:53,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:40:53,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:40:53,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:40:53,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:40:53,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:40:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:40:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:40:53,228 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:40:53,228 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:40:53,228 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:40:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:40:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:40:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:40:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:40:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:40:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:40:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:40:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:40:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:40:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:40:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:40:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:41:05,527 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:41:05,527 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:41:05,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:41:05 BoogieIcfgContainer [2020-10-13 08:41:05,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:41:05,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:41:05,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:41:05,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:41:05,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:40:49" (1/3) ... [2020-10-13 08:41:05,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1742b549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:41:05, skipping insertion in model container [2020-10-13 08:41:05,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:52" (2/3) ... [2020-10-13 08:41:05,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1742b549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:41:05, skipping insertion in model container [2020-10-13 08:41:05,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:41:05" (3/3) ... [2020-10-13 08:41:05,562 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label44.c [2020-10-13 08:41:05,573 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:41:05,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:41:05,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:41:05,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:41:05,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:41:05,639 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:41:05,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:41:05,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:41:05,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:41:05,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:41:05,639 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:41:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:41:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 08:41:05,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:05,697 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] [2020-10-13 08:41:05,697 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:05,705 INFO L82 PathProgramCache]: Analyzing trace with hash -2097307521, now seen corresponding path program 1 times [2020-10-13 08:41:05,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:05,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420455862] [2020-10-13 08:41:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:05,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:06,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:06,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 08:41:06,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:06,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-13 08:41:06,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:41:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:41:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 08:41:06,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:41:06,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:06,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:06,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:06,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:06,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:41:06,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:06,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:06,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:41:06,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:41:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:41:06,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420455862] [2020-10-13 08:41:06,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:41:06,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:41:06,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321775622] [2020-10-13 08:41:06,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:41:06,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:06,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:41:06,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:41:06,574 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-13 08:41:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:25,023 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-13 08:41:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:41:25,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-13 08:41:25,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:25,072 INFO L225 Difference]: With dead ends: 3230 [2020-10-13 08:41:25,072 INFO L226 Difference]: Without dead ends: 2026 [2020-10-13 08:41:25,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:41:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-13 08:41:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-13 08:41:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-13 08:41:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-13 08:41:25,292 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 36 [2020-10-13 08:41:25,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:25,293 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-13 08:41:25,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:41:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-13 08:41:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 08:41:25,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:25,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:41:25,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:41:25,307 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:25,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1339916923, now seen corresponding path program 1 times [2020-10-13 08:41:25,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:25,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309139215] [2020-10-13 08:41:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:25,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:26,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:26,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 08:41:26,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:26,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-13 08:41:26,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:41:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:41:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:41:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:26,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:26,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:26,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:26,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:41:26,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:41:26,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:41:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:26,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:26,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:26,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:41:26,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-13 08:41:26,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:41:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:41:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:41:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 08:41:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:41:26,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309139215] [2020-10-13 08:41:26,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:41:26,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:41:26,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905878350] [2020-10-13 08:41:26,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:41:26,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:26,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:41:26,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:41:26,563 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 7 states. [2020-10-13 08:41:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:53,749 INFO L93 Difference]: Finished difference Result 5838 states and 9679 transitions. [2020-10-13 08:41:53,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:41:53,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-13 08:41:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:53,775 INFO L225 Difference]: With dead ends: 5838 [2020-10-13 08:41:53,775 INFO L226 Difference]: Without dead ends: 3835 [2020-10-13 08:41:53,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:41:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2020-10-13 08:41:53,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3697. [2020-10-13 08:41:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3697 states. [2020-10-13 08:41:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5279 transitions. [2020-10-13 08:41:53,934 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5279 transitions. Word has length 111 [2020-10-13 08:41:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:53,936 INFO L479 AbstractCegarLoop]: Abstraction has 3697 states and 5279 transitions. [2020-10-13 08:41:53,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:41:53,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5279 transitions. [2020-10-13 08:41:53,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 08:41:53,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:53,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:41:53,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:41:53,951 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:53,951 INFO L82 PathProgramCache]: Analyzing trace with hash -820018817, now seen corresponding path program 1 times [2020-10-13 08:41:53,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:53,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982232782] [2020-10-13 08:41:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:54,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:55,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:55,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 08:41:55,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:41:55,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-10-13 08:41:55,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:55,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:41:55,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-13 08:41:55,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:41:55,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:41:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:55,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:55,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:55,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:41:55,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:55,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:55,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:41:55,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:55,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:55,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:55,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:41:55,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:55,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-13 08:41:55,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:55,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:55,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:41:55,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:41:55,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982232782] [2020-10-13 08:41:55,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:41:55,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:41:55,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301392968] [2020-10-13 08:41:55,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:41:55,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:55,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:41:55,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:41:55,878 INFO L87 Difference]: Start difference. First operand 3697 states and 5279 transitions. Second operand 5 states. [2020-10-13 08:42:14,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:14,726 INFO L93 Difference]: Finished difference Result 10706 states and 15467 transitions. [2020-10-13 08:42:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:42:14,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-13 08:42:14,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:14,783 INFO L225 Difference]: With dead ends: 10706 [2020-10-13 08:42:14,783 INFO L226 Difference]: Without dead ends: 7015 [2020-10-13 08:42:14,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:42:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7015 states. [2020-10-13 08:42:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7015 to 6991. [2020-10-13 08:42:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6991 states. [2020-10-13 08:42:15,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 9017 transitions. [2020-10-13 08:42:15,022 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 9017 transitions. Word has length 141 [2020-10-13 08:42:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:15,025 INFO L479 AbstractCegarLoop]: Abstraction has 6991 states and 9017 transitions. [2020-10-13 08:42:15,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:42:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 9017 transitions. [2020-10-13 08:42:15,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-13 08:42:15,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:15,032 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:42:15,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:42:15,033 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:15,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:15,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1990620253, now seen corresponding path program 1 times [2020-10-13 08:42:15,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:15,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919149714] [2020-10-13 08:42:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:15,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:15,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:15,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:20,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:20,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 08:42:20,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:42:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 08:42:20,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-13 08:42:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:42:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:20,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:20,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:20,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:20,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:20,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:42:20,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:20,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:20,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:20,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:20,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:42:20,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:20,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:42:20,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:20,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:20,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:20,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:20,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:42:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:20,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:20,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:20,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:42:20,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 08:42:20,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 08:42:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:42:20,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919149714] [2020-10-13 08:42:20,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:42:20,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:42:20,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279606341] [2020-10-13 08:42:20,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:20,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:20,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:20,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:20,625 INFO L87 Difference]: Start difference. First operand 6991 states and 9017 transitions. Second operand 5 states. [2020-10-13 08:42:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:43,983 INFO L93 Difference]: Finished difference Result 16483 states and 22202 transitions. [2020-10-13 08:42:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:42:43,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-13 08:42:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:44,043 INFO L225 Difference]: With dead ends: 16483 [2020-10-13 08:42:44,043 INFO L226 Difference]: Without dead ends: 10301 [2020-10-13 08:42:44,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:42:44,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10301 states. [2020-10-13 08:42:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10301 to 10294. [2020-10-13 08:42:44,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10294 states. [2020-10-13 08:42:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10294 states to 10294 states and 12861 transitions. [2020-10-13 08:42:44,373 INFO L78 Accepts]: Start accepts. Automaton has 10294 states and 12861 transitions. Word has length 236 [2020-10-13 08:42:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:44,376 INFO L479 AbstractCegarLoop]: Abstraction has 10294 states and 12861 transitions. [2020-10-13 08:42:44,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:42:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 10294 states and 12861 transitions. [2020-10-13 08:42:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-13 08:42:44,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:44,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:42:44,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:42:44,465 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:44,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:44,466 INFO L82 PathProgramCache]: Analyzing trace with hash 918925227, now seen corresponding path program 1 times [2020-10-13 08:42:44,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:44,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875791760] [2020-10-13 08:42:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:44,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:45,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:46,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:46,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:46,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-13 08:42:46,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:42:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1816 [2020-10-13 08:42:46,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-13 08:42:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:42:46,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:42:46,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:46,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:46,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:46,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:42:46,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:46,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:42:46,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:46,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:46,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:42:46,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:46,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:42:46,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:46,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:46,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 08:42:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:46,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:46,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:42:46,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 08:42:46,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:42:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:42:46,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 08:42:46,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875791760] [2020-10-13 08:42:46,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:42:46,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:42:46,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887846234] [2020-10-13 08:42:46,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:46,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:46,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:46,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:46,908 INFO L87 Difference]: Start difference. First operand 10294 states and 12861 transitions. Second operand 5 states. [2020-10-13 08:43:04,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:04,838 INFO L93 Difference]: Finished difference Result 15684 states and 20320 transitions. [2020-10-13 08:43:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:04,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-13 08:43:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:04,882 INFO L225 Difference]: With dead ends: 15684 [2020-10-13 08:43:04,883 INFO L226 Difference]: Without dead ends: 10283 [2020-10-13 08:43:04,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2020-10-13 08:43:05,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 10282. [2020-10-13 08:43:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10282 states. [2020-10-13 08:43:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10282 states to 10282 states and 12833 transitions. [2020-10-13 08:43:05,115 INFO L78 Accepts]: Start accepts. Automaton has 10282 states and 12833 transitions. Word has length 255 [2020-10-13 08:43:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:05,116 INFO L479 AbstractCegarLoop]: Abstraction has 10282 states and 12833 transitions. [2020-10-13 08:43:05,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 10282 states and 12833 transitions. [2020-10-13 08:43:05,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-13 08:43:05,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:05,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:43:05,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:43:05,123 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:05,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:05,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1630829774, now seen corresponding path program 1 times [2020-10-13 08:43:05,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:05,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133137415] [2020-10-13 08:43:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:05,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:05,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:05,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:08,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:08,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-13 08:43:08,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:43:08,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3695 [2020-10-13 08:43:08,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-13 08:43:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:43:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:43:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:09,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:09,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:09,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:09,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:09,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:43:09,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:09,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:09,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:09,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:09,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:43:09,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:43:09,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:09,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 08:43:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:09,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:09,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:09,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:43:09,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 08:43:09,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:09,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:09,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:43:09,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:43:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:43:09,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133137415] [2020-10-13 08:43:09,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:09,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:09,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427334355] [2020-10-13 08:43:09,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:09,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:09,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:09,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:09,494 INFO L87 Difference]: Start difference. First operand 10282 states and 12833 transitions. Second operand 5 states. [2020-10-13 08:43:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:31,358 INFO L93 Difference]: Finished difference Result 23053 states and 29998 transitions. [2020-10-13 08:43:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:31,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-13 08:43:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:31,412 INFO L225 Difference]: With dead ends: 23053 [2020-10-13 08:43:31,412 INFO L226 Difference]: Without dead ends: 13580 [2020-10-13 08:43:31,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2020-10-13 08:43:31,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 13566. [2020-10-13 08:43:31,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13566 states. [2020-10-13 08:43:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13566 states to 13566 states and 17333 transitions. [2020-10-13 08:43:31,725 INFO L78 Accepts]: Start accepts. Automaton has 13566 states and 17333 transitions. Word has length 258 [2020-10-13 08:43:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:31,726 INFO L479 AbstractCegarLoop]: Abstraction has 13566 states and 17333 transitions. [2020-10-13 08:43:31,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:31,727 INFO L276 IsEmpty]: Start isEmpty. Operand 13566 states and 17333 transitions. [2020-10-13 08:43:31,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-13 08:43:31,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:31,733 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:43:31,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:43:31,734 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1714952782, now seen corresponding path program 1 times [2020-10-13 08:43:31,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:31,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510852822] [2020-10-13 08:43:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:32,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:32,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:33,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:35,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:35,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 08:43:35,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:43:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3455 [2020-10-13 08:43:35,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 241 [2020-10-13 08:43:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:43:35,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:35,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:35,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:35,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:43:35,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:35,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:35,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:35,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:35,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:43:35,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:35,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 08:43:35,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:35,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 08:43:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:35,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:35,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:35,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:43:35,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:43:35,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:43:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:43:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-13 08:43:35,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510852822] [2020-10-13 08:43:35,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:35,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:35,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109940513] [2020-10-13 08:43:35,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:35,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:35,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:35,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:35,764 INFO L87 Difference]: Start difference. First operand 13566 states and 17333 transitions. Second operand 5 states. [2020-10-13 08:43:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:56,209 INFO L93 Difference]: Finished difference Result 32059 states and 42306 transitions. [2020-10-13 08:43:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:56,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-10-13 08:43:56,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:56,298 INFO L225 Difference]: With dead ends: 32059 [2020-10-13 08:43:56,298 INFO L226 Difference]: Without dead ends: 19302 [2020-10-13 08:43:56,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19302 states. [2020-10-13 08:43:56,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19302 to 19295. [2020-10-13 08:43:56,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19295 states. [2020-10-13 08:43:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19295 states to 19295 states and 24642 transitions. [2020-10-13 08:43:56,796 INFO L78 Accepts]: Start accepts. Automaton has 19295 states and 24642 transitions. Word has length 265 [2020-10-13 08:43:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:56,797 INFO L479 AbstractCegarLoop]: Abstraction has 19295 states and 24642 transitions. [2020-10-13 08:43:56,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:56,797 INFO L276 IsEmpty]: Start isEmpty. Operand 19295 states and 24642 transitions. [2020-10-13 08:43:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-13 08:43:56,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:56,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:43:56,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:43:56,807 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:56,808 INFO L82 PathProgramCache]: Analyzing trace with hash 830872219, now seen corresponding path program 1 times [2020-10-13 08:43:56,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:56,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258543439] [2020-10-13 08:43:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:00,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:00,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 08:44:00,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:44:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3976 [2020-10-13 08:44:00,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:44:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-13 08:44:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 08:44:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:01,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:44:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:01,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:01,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:01,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:44:01,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:01,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:44:01,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:01,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:44:01,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:01,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:44:01,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:01,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:44:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:01,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:01,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:01,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:44:01,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:01,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:44:01,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:44:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:44:01,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:44:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:01,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:01,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:44:01,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:01,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:44:01,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:44:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 08:44:01,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 08:44:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:01,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:01,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:01,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:44:01,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 08:44:01,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:44:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:44:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:44:01,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 08:44:01,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258543439] [2020-10-13 08:44:01,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:44:01,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:44:01,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528818419] [2020-10-13 08:44:01,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:44:01,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:44:01,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:44:01,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:44:01,740 INFO L87 Difference]: Start difference. First operand 19295 states and 24642 transitions. Second operand 7 states.