/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=SMALLEST --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/Problem10_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:24:16,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:24:16,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:24:16,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:24:16,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:24:16,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:24:16,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:24:16,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:24:16,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:24:16,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:24:16,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:24:16,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:24:16,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:24:16,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:24:16,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:24:16,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:24:16,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:24:16,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:24:16,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:24:16,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:24:16,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:24:17,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:24:17,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:24:17,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:24:17,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:24:17,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:24:17,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:24:17,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:24:17,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:24:17,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:24:17,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:24:17,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:24:17,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:24:17,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:24:17,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:24:17,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:24:17,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:24:17,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:24:17,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:24:17,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:24:17,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:24:17,023 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 [2020-09-24 18:24:17,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:24:17,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:24:17,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:24:17,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:24:17,077 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:24:17,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:24:17,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:24:17,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:24:17,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:24:17,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:24:17,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:24:17,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:24:17,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:24:17,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:24:17,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:24:17,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:24:17,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:24:17,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:24:17,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:24:17,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:24:17,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:24:17,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:24:17,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:24:17,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:24:17,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:24:17,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:24:17,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:24:17,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:24:17,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:24:17,085 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:24:17,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:24:17,556 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:24:17,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:24:17,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:24:17,564 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:24:17,566 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-24 18:24:17,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f277eb9d/7901a95b6e3f4bdf93a9c49d2f7ca912/FLAG1cac53a76 [2020-09-24 18:24:18,312 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:24:18,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-24 18:24:18,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f277eb9d/7901a95b6e3f4bdf93a9c49d2f7ca912/FLAG1cac53a76 [2020-09-24 18:24:18,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f277eb9d/7901a95b6e3f4bdf93a9c49d2f7ca912 [2020-09-24 18:24:18,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:24:18,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:24:18,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:18,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:24:18,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:24:18,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:18" (1/1) ... [2020-09-24 18:24:18,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4187f794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:18, skipping insertion in model container [2020-09-24 18:24:18,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:18" (1/1) ... [2020-09-24 18:24:18,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:24:18,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:24:19,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:19,218 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:24:19,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:19,422 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:24:19,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:19 WrapperNode [2020-09-24 18:24:19,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:19,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:24:19,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:24:19,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:24:19,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:19" (1/1) ... [2020-09-24 18:24:19,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:19" (1/1) ... [2020-09-24 18:24:19,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:19" (1/1) ... [2020-09-24 18:24:19,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:19" (1/1) ... [2020-09-24 18:24:19,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:19" (1/1) ... [2020-09-24 18:24:19,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:19" (1/1) ... [2020-09-24 18:24:19,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:19" (1/1) ... [2020-09-24 18:24:19,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:24:19,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:24:19,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:24:19,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:24:19,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:19" (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 [2020-09-24 18:24:19,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:24:19,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:24:19,645 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:24:19,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:24:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:24:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:24:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:24:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:24:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:24:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:24:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:24:21,200 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:24:21,201 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:24:21,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:21 BoogieIcfgContainer [2020-09-24 18:24:21,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:24:21,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:24:21,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:24:21,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:24:21,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:18" (1/3) ... [2020-09-24 18:24:21,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d318c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:21, skipping insertion in model container [2020-09-24 18:24:21,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:19" (2/3) ... [2020-09-24 18:24:21,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d318c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:21, skipping insertion in model container [2020-09-24 18:24:21,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:21" (3/3) ... [2020-09-24 18:24:21,221 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-24 18:24:21,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:24:21,246 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:24:21,270 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:24:21,306 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:24:21,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:24:21,307 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:24:21,307 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:24:21,307 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:24:21,307 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:24:21,308 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:24:21,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:24:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:24:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 18:24:21,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:21,353 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] [2020-09-24 18:24:21,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:21,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:21,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-24 18:24:21,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:21,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676288411] [2020-09-24 18:24:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:22,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:22,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:22,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:24:22,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:24:22,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-09-24 18:24:22,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:24:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 18:24:22,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:24:22,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:22,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:22,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:22,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:24:22,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:24:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:22,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676288411] [2020-09-24 18:24:22,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:22,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:24:22,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367476916] [2020-09-24 18:24:22,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:24:22,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:22,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:24:22,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:24:22,551 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:24:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:24,567 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 18:24:24,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:24:24,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-24 18:24:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:24,611 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 18:24:24,611 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 18:24:24,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 18:24:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 18:24:24,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 18:24:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 18:24:24,798 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 67 [2020-09-24 18:24:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:24,799 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 18:24:24,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:24:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 18:24:24,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-24 18:24:24,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:24,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:24,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:24:24,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:24,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1559188019, now seen corresponding path program 1 times [2020-09-24 18:24:24,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:24,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743316649] [2020-09-24 18:24:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:27,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:27,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 18:24:27,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2316 [2020-09-24 18:24:27,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:27,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:27,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:24:27,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 18:24:27,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:24:27,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:27,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:27,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:27,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:24:27,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:27,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:27,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:27,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:24:27,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:27,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 18:24:27,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:27,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:27,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:24:27,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 18:24:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:27,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743316649] [2020-09-24 18:24:27,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:27,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:27,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556894605] [2020-09-24 18:24:27,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:27,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:27,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:27,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:27,591 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-24 18:24:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:29,641 INFO L93 Difference]: Finished difference Result 1417 states and 1827 transitions. [2020-09-24 18:24:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:29,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-24 18:24:29,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:29,649 INFO L225 Difference]: With dead ends: 1417 [2020-09-24 18:24:29,649 INFO L226 Difference]: Without dead ends: 889 [2020-09-24 18:24:29,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-09-24 18:24:29,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 849. [2020-09-24 18:24:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-24 18:24:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1040 transitions. [2020-09-24 18:24:29,695 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1040 transitions. Word has length 147 [2020-09-24 18:24:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:29,697 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1040 transitions. [2020-09-24 18:24:29,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1040 transitions. [2020-09-24 18:24:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 18:24:29,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:29,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:29,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:24:29,701 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:29,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:29,702 INFO L82 PathProgramCache]: Analyzing trace with hash -541316222, now seen corresponding path program 1 times [2020-09-24 18:24:29,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:29,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809350629] [2020-09-24 18:24:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:29,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:30,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:30,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:30,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 18:24:32,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:32,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3045 [2020-09-24 18:24:32,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-24 18:24:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:24:32,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:32,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:32,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:24:32,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:32,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:33,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:33,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 18:24:33,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:24:33,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 18:24:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:33,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809350629] [2020-09-24 18:24:33,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:33,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:24:33,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755084025] [2020-09-24 18:24:33,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:24:33,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:33,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:24:33,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:33,096 INFO L87 Difference]: Start difference. First operand 849 states and 1040 transitions. Second operand 6 states. [2020-09-24 18:24:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:35,729 INFO L93 Difference]: Finished difference Result 2159 states and 2783 transitions. [2020-09-24 18:24:35,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:24:35,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-24 18:24:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:35,739 INFO L225 Difference]: With dead ends: 2159 [2020-09-24 18:24:35,739 INFO L226 Difference]: Without dead ends: 1325 [2020-09-24 18:24:35,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:24:35,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-09-24 18:24:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1305. [2020-09-24 18:24:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-09-24 18:24:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1647 transitions. [2020-09-24 18:24:35,797 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1647 transitions. Word has length 158 [2020-09-24 18:24:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:35,798 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1647 transitions. [2020-09-24 18:24:35,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:24:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1647 transitions. [2020-09-24 18:24:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 18:24:35,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:35,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:35,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:24:35,806 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:35,806 INFO L82 PathProgramCache]: Analyzing trace with hash -674389729, now seen corresponding path program 1 times [2020-09-24 18:24:35,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:35,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650393500] [2020-09-24 18:24:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:37,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:40,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 18:24:40,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:40,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-24 18:24:40,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-24 18:24:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 18:24:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:41,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:41,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:41,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:41,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:41,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:24:41,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:41,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:41,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:41,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:41,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:41,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:41,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:41,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:41,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 18:24:41,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:41,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 18:24:41,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:41,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 18:24:41,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:41,281 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:41,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650393500] [2020-09-24 18:24:41,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:41,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:41,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656274571] [2020-09-24 18:24:41,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:41,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:41,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:41,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:41,286 INFO L87 Difference]: Start difference. First operand 1305 states and 1647 transitions. Second operand 5 states. [2020-09-24 18:24:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:43,195 INFO L93 Difference]: Finished difference Result 3745 states and 4872 transitions. [2020-09-24 18:24:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:43,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-09-24 18:24:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:43,212 INFO L225 Difference]: With dead ends: 3745 [2020-09-24 18:24:43,213 INFO L226 Difference]: Without dead ends: 2455 [2020-09-24 18:24:43,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2020-09-24 18:24:43,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2250. [2020-09-24 18:24:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2020-09-24 18:24:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2814 transitions. [2020-09-24 18:24:43,304 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2814 transitions. Word has length 196 [2020-09-24 18:24:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:43,306 INFO L479 AbstractCegarLoop]: Abstraction has 2250 states and 2814 transitions. [2020-09-24 18:24:43,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2814 transitions. [2020-09-24 18:24:43,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-24 18:24:43,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:43,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:43,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:43,320 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:43,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1169597642, now seen corresponding path program 1 times [2020-09-24 18:24:43,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:43,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526995410] [2020-09-24 18:24:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:43,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:47,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:48,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:48,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-24 18:24:48,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:24:48,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 18:24:48,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:24:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 18:24:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:48,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:48,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:48,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:48,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:48,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:48,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:48,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:48,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:48,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:24:48,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 18:24:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:24:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:48,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 18:24:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:24:49,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-24 18:24:49,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:24:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:49,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526995410] [2020-09-24 18:24:49,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:49,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:49,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703939454] [2020-09-24 18:24:49,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:49,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:49,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:49,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:49,295 INFO L87 Difference]: Start difference. First operand 2250 states and 2814 transitions. Second operand 7 states. [2020-09-24 18:24:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:51,713 INFO L93 Difference]: Finished difference Result 5011 states and 6418 transitions. [2020-09-24 18:24:51,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:51,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-09-24 18:24:51,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:51,732 INFO L225 Difference]: With dead ends: 5011 [2020-09-24 18:24:51,732 INFO L226 Difference]: Without dead ends: 2280 [2020-09-24 18:24:51,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:51,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2020-09-24 18:24:51,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2228. [2020-09-24 18:24:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2020-09-24 18:24:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2731 transitions. [2020-09-24 18:24:51,848 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2731 transitions. Word has length 291 [2020-09-24 18:24:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:51,848 INFO L479 AbstractCegarLoop]: Abstraction has 2228 states and 2731 transitions. [2020-09-24 18:24:51,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2731 transitions. [2020-09-24 18:24:51,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-24 18:24:51,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:51,859 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:51,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:51,859 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:51,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:51,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1082133206, now seen corresponding path program 1 times [2020-09-24 18:24:51,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:51,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315168065] [2020-09-24 18:24:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:51,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:56,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:56,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-09-24 18:24:56,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:24:56,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:24:56,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-09-24 18:24:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 18:24:56,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:56,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:57,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:57,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:57,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:24:57,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:57,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:57,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 18:24:57,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 18:24:57,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:24:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:57,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 18:24:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:57,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:24:57,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-24 18:24:57,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:24:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:57,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315168065] [2020-09-24 18:24:57,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:57,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:57,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900643379] [2020-09-24 18:24:57,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:57,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:57,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:57,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:57,588 INFO L87 Difference]: Start difference. First operand 2228 states and 2731 transitions. Second operand 7 states. [2020-09-24 18:24:59,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:59,839 INFO L93 Difference]: Finished difference Result 4643 states and 5757 transitions. [2020-09-24 18:24:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:59,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-09-24 18:24:59,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:59,850 INFO L225 Difference]: With dead ends: 4643 [2020-09-24 18:24:59,851 INFO L226 Difference]: Without dead ends: 1806 [2020-09-24 18:24:59,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2020-09-24 18:24:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1754. [2020-09-24 18:24:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1754 states. [2020-09-24 18:24:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2080 transitions. [2020-09-24 18:24:59,945 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2080 transitions. Word has length 310 [2020-09-24 18:24:59,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:59,945 INFO L479 AbstractCegarLoop]: Abstraction has 1754 states and 2080 transitions. [2020-09-24 18:24:59,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2080 transitions. [2020-09-24 18:24:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-09-24 18:24:59,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:59,956 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-24 18:24:59,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:24:59,956 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:59,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1693098128, now seen corresponding path program 1 times [2020-09-24 18:24:59,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:59,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384053521] [2020-09-24 18:24:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:00,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:00,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:00,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:01,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:01,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:05,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:05,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-09-24 18:25:05,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 18:25:05,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 18:25:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 18:25:05,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:05,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:05,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:05,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:05,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:05,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:05,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:05,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:05,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:05,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:05,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:05,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:05,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:05,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:05,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:05,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:25:05,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 18:25:05,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 18:25:05,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:05,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:25:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:05,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:05,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:05,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:25:05,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 18:25:05,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 18:25:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:05,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 18:25:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:05,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:05,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:25:05,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:05,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:25:05,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 18:25:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:05,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 238 proven. 71 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 18:25:05,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384053521] [2020-09-24 18:25:05,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:05,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:25:05,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263927843] [2020-09-24 18:25:05,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:25:05,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:05,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:25:05,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:25:05,525 INFO L87 Difference]: Start difference. First operand 1754 states and 2080 transitions. Second operand 8 states.