/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:25,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:25,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:25,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:25,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:25,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:25,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:25,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:25,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:25,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:25,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:25,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:25,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:25,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:25,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:25,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:25,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:25,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:25,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:25,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:25,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:25,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:25,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:25,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:25,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:25,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:25,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:25,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:25,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:25,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:25,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:25,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:25,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:25,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:25,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:25,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:25,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:25,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:25,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:25,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:25,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:25,952 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 [2020-09-25 12:22:26,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:26,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:26,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:26,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:26,004 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:26,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:26,005 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:26,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:26,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:26,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:26,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:26,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:26,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:26,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:26,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:26,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:26,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:26,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:26,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:26,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:26,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:26,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:26,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:26,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:26,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:26,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:26,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:26,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:26,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:26,012 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:22:26,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:26,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:26,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:26,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:26,472 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:26,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 12:22:26,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a759f5ab/13abd56d28ac4ad98735e2eea5ce07f5/FLAGbf0a43d05 [2020-09-25 12:22:27,216 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:27,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 12:22:27,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a759f5ab/13abd56d28ac4ad98735e2eea5ce07f5/FLAGbf0a43d05 [2020-09-25 12:22:27,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a759f5ab/13abd56d28ac4ad98735e2eea5ce07f5 [2020-09-25 12:22:27,463 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:27,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:27,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:27,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:27,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:27,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:27" (1/1) ... [2020-09-25 12:22:27,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d084142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:27, skipping insertion in model container [2020-09-25 12:22:27,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:27" (1/1) ... [2020-09-25 12:22:27,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:27,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:28,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:28,034 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:28,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:28,300 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:28,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28 WrapperNode [2020-09-25 12:22:28,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:28,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:28,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:28,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:28,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:28,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:28,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:28,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:28,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (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 [2020-09-25 12:22:28,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:28,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:29,949 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:29,949 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:29,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:29 BoogieIcfgContainer [2020-09-25 12:22:29,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:29,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:29,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:29,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:29,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:27" (1/3) ... [2020-09-25 12:22:29,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203f2cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:29, skipping insertion in model container [2020-09-25 12:22:29,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (2/3) ... [2020-09-25 12:22:29,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203f2cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:29, skipping insertion in model container [2020-09-25 12:22:29,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:29" (3/3) ... [2020-09-25 12:22:29,978 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-09-25 12:22:29,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:30,009 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:30,031 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:30,066 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:30,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:30,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:30,067 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:30,067 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:30,067 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:30,067 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:30,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:22:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 12:22:30,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:30,127 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] [2020-09-25 12:22:30,127 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:30,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1970187929, now seen corresponding path program 1 times [2020-09-25 12:22:30,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:30,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75837090] [2020-09-25 12:22:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:30,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 12:22:35,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:22:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:22:35,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:22:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 12:22:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:22:35,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:35,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:35,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 12:22:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:22:35,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:35,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75837090] [2020-09-25 12:22:35,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:35,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:22:35,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089649786] [2020-09-25 12:22:35,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:22:35,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:35,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:22:35,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:22:35,850 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:22:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:38,026 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 12:22:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:22:38,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 12:22:38,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:38,070 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 12:22:38,070 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 12:22:38,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 12:22:38,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 12:22:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:22:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 12:22:38,186 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 150 [2020-09-25 12:22:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:38,187 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 12:22:38,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:22:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 12:22:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 12:22:38,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:38,204 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:38,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:22:38,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:38,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1973679864, now seen corresponding path program 1 times [2020-09-25 12:22:38,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:38,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460279346] [2020-09-25 12:22:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:38,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:40,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:43,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 12:22:43,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:22:43,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:22:43,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:43,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:22:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:22:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:22:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:43,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:43,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:22:43,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:43,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:43,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:43,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 12:22:43,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:43,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:43,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:22:43,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:43,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:22:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:43,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460279346] [2020-09-25 12:22:43,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:43,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:22:43,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238372245] [2020-09-25 12:22:43,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:22:43,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:43,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:22:43,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:22:43,928 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 9 states. [2020-09-25 12:22:47,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:47,567 INFO L93 Difference]: Finished difference Result 1904 states and 2480 transitions. [2020-09-25 12:22:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:22:47,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 12:22:47,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:47,576 INFO L225 Difference]: With dead ends: 1904 [2020-09-25 12:22:47,576 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 12:22:47,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:22:47,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 12:22:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 876. [2020-09-25 12:22:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-09-25 12:22:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1014 transitions. [2020-09-25 12:22:47,620 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1014 transitions. Word has length 171 [2020-09-25 12:22:47,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:47,621 INFO L479 AbstractCegarLoop]: Abstraction has 876 states and 1014 transitions. [2020-09-25 12:22:47,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:22:47,621 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1014 transitions. [2020-09-25 12:22:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 12:22:47,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:47,627 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:47,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:22:47,627 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:47,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:47,628 INFO L82 PathProgramCache]: Analyzing trace with hash 276355023, now seen corresponding path program 1 times [2020-09-25 12:22:47,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:47,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953010156] [2020-09-25 12:22:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:48,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:49,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:52,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 12:22:52,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 12:22:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:22:52,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:52,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 12:22:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 12:22:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:52,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:52,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:52,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:22:52,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:52,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:52,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:52,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:52,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:52,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:22:52,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:52,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:22:52,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:52,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:22:52,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:52,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953010156] [2020-09-25 12:22:52,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:52,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:52,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931184007] [2020-09-25 12:22:52,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:52,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:52,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:52,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:52,950 INFO L87 Difference]: Start difference. First operand 876 states and 1014 transitions. Second operand 5 states. [2020-09-25 12:22:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:55,157 INFO L93 Difference]: Finished difference Result 2057 states and 2425 transitions. [2020-09-25 12:22:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:55,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 12:22:55,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:55,166 INFO L225 Difference]: With dead ends: 2057 [2020-09-25 12:22:55,166 INFO L226 Difference]: Without dead ends: 1034 [2020-09-25 12:22:55,170 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 [2020-09-25 12:22:55,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-09-25 12:22:55,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 989. [2020-09-25 12:22:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2020-09-25 12:22:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1135 transitions. [2020-09-25 12:22:55,219 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1135 transitions. Word has length 175 [2020-09-25 12:22:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:55,221 INFO L479 AbstractCegarLoop]: Abstraction has 989 states and 1135 transitions. [2020-09-25 12:22:55,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1135 transitions. [2020-09-25 12:22:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 12:22:55,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:55,236 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:55,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:55,237 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:55,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:55,237 INFO L82 PathProgramCache]: Analyzing trace with hash -256131408, now seen corresponding path program 1 times [2020-09-25 12:22:55,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:55,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523576838] [2020-09-25 12:22:55,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:00,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:00,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 12:23:00,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:23:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 12:23:00,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:00,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 12:23:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 12:23:00,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:00,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:00,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:00,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:23:00,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:00,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:23:00,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:00,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:00,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:23:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:00,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:00,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:23:00,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:00,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:23:00,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:00,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:00,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:00,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:00,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:23:00,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:00,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523576838] [2020-09-25 12:23:00,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:00,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:00,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206584788] [2020-09-25 12:23:00,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:00,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:00,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:00,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:00,635 INFO L87 Difference]: Start difference. First operand 989 states and 1135 transitions. Second operand 5 states. [2020-09-25 12:23:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:02,316 INFO L93 Difference]: Finished difference Result 2441 states and 2898 transitions. [2020-09-25 12:23:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:02,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 12:23:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:02,327 INFO L225 Difference]: With dead ends: 2441 [2020-09-25 12:23:02,327 INFO L226 Difference]: Without dead ends: 1476 [2020-09-25 12:23:02,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-09-25 12:23:02,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1279. [2020-09-25 12:23:02,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-09-25 12:23:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1507 transitions. [2020-09-25 12:23:02,385 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1507 transitions. Word has length 180 [2020-09-25 12:23:02,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:02,385 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1507 transitions. [2020-09-25 12:23:02,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1507 transitions. [2020-09-25 12:23:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 12:23:02,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:02,394 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:02,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:23:02,395 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:02,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:02,395 INFO L82 PathProgramCache]: Analyzing trace with hash -248235162, now seen corresponding path program 1 times [2020-09-25 12:23:02,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:02,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289826776] [2020-09-25 12:23:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:02,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:03,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:03,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:04,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:07,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 12:23:07,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:23:07,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 12:23:07,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:07,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:07,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:23:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:23:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-09-25 12:23:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:07,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:07,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:23:07,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:07,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:23:07,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:07,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:23:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:23:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:07,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:07,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:23:07,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 12:23:07,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:07,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:23:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:07,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 12:23:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:08,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 12:23:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 12:23:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:08,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:23:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:23:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 12:23:08,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289826776] [2020-09-25 12:23:08,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:08,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:23:08,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034201898] [2020-09-25 12:23:08,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:23:08,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:08,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:23:08,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:23:08,382 INFO L87 Difference]: Start difference. First operand 1279 states and 1507 transitions. Second operand 12 states. [2020-09-25 12:23:11,058 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-09-25 12:23:12,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:12,574 INFO L93 Difference]: Finished difference Result 3225 states and 3956 transitions. [2020-09-25 12:23:12,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:23:12,575 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 231 [2020-09-25 12:23:12,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:12,582 INFO L225 Difference]: With dead ends: 3225 [2020-09-25 12:23:12,582 INFO L226 Difference]: Without dead ends: 1427 [2020-09-25 12:23:12,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-09-25 12:23:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2020-09-25 12:23:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1261. [2020-09-25 12:23:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2020-09-25 12:23:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1377 transitions. [2020-09-25 12:23:12,628 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1377 transitions. Word has length 231 [2020-09-25 12:23:12,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:12,629 INFO L479 AbstractCegarLoop]: Abstraction has 1261 states and 1377 transitions. [2020-09-25 12:23:12,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:23:12,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1377 transitions. [2020-09-25 12:23:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 12:23:12,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:12,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:12,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:23:12,636 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:12,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:12,636 INFO L82 PathProgramCache]: Analyzing trace with hash 804479781, now seen corresponding path program 1 times [2020-09-25 12:23:12,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:12,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879171151] [2020-09-25 12:23:12,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:12,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking...