/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/Problem10_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:39,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:39,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:39,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:39,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:39,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:39,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:39,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:39,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:39,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:39,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:39,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:39,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:39,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:39,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:39,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:39,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:39,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:39,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:39,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:39,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:39,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:39,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:39,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:39,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:39,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:39,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:39,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:39,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:39,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:39,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:39,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:39,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:39,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:39,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:39,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:39,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:39,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:39,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:39,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:39,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:39,961 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 12:26:40,009 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:40,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:40,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:40,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:40,014 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:40,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:40,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:40,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:40,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:40,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:40,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:40,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:40,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:40,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:40,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:40,019 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:40,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:40,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:40,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:40,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:40,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:40,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:40,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:40,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:40,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:40,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:40,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:40,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:40,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:40,023 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 12:26:40,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:40,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:40,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:40,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:40,540 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:40,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-25 12:26:40,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63fa3753e/9e5be41862c3400e9996ae64f1ed8fc4/FLAGbe7b0dade [2020-09-25 12:26:41,226 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:41,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-25 12:26:41,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63fa3753e/9e5be41862c3400e9996ae64f1ed8fc4/FLAGbe7b0dade [2020-09-25 12:26:41,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63fa3753e/9e5be41862c3400e9996ae64f1ed8fc4 [2020-09-25 12:26:41,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:41,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:41,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:41,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:41,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:41,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:41" (1/1) ... [2020-09-25 12:26:41,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f21738f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:41, skipping insertion in model container [2020-09-25 12:26:41,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:41" (1/1) ... [2020-09-25 12:26:41,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:41,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:42,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:42,080 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:42,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:42,423 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:42,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:42 WrapperNode [2020-09-25 12:26:42,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:42,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:42,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:42,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:42,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:42" (1/1) ... [2020-09-25 12:26:42,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:42" (1/1) ... [2020-09-25 12:26:42,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:42" (1/1) ... [2020-09-25 12:26:42,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:42" (1/1) ... [2020-09-25 12:26:42,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:42" (1/1) ... [2020-09-25 12:26:42,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:42" (1/1) ... [2020-09-25 12:26:42,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:42" (1/1) ... [2020-09-25 12:26:42,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:42,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:42,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:42,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:42,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:42" (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 12:26:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:42,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:44,281 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:44,282 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:44,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:44 BoogieIcfgContainer [2020-09-25 12:26:44,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:44,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:44,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:44,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:44,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:41" (1/3) ... [2020-09-25 12:26:44,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56305be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:44, skipping insertion in model container [2020-09-25 12:26:44,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:42" (2/3) ... [2020-09-25 12:26:44,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56305be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:44, skipping insertion in model container [2020-09-25 12:26:44,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:44" (3/3) ... [2020-09-25 12:26:44,303 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label22.c [2020-09-25 12:26:44,315 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:44,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:44,350 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:44,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:44,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:44,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:44,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:44,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:44,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:44,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:44,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:44,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 12:26:44,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:44,432 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] [2020-09-25 12:26:44,432 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:44,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:44,440 INFO L82 PathProgramCache]: Analyzing trace with hash 382162911, now seen corresponding path program 1 times [2020-09-25 12:26:44,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:44,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134904440] [2020-09-25 12:26:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:44,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:44,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:45,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:45,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:26:45,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:45,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-09-25 12:26:45,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:45,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 12:26:45,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:26:45,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:45,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:45,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:45,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:26:45,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:45,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:45,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:45,577 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 12:26:45,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134904440] [2020-09-25 12:26:45,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:45,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:45,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731883977] [2020-09-25 12:26:45,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:45,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:45,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:45,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:45,610 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:47,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:47,632 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 12:26:47,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:47,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-25 12:26:47,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:47,678 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 12:26:47,678 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 12:26:47,691 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 12:26:47,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 12:26:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 12:26:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 12:26:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 12:26:47,789 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 56 [2020-09-25 12:26:47,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:47,790 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 12:26:47,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 12:26:47,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 12:26:47,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:47,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:47,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:47,799 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:47,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:47,800 INFO L82 PathProgramCache]: Analyzing trace with hash -701735608, now seen corresponding path program 1 times [2020-09-25 12:26:47,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:47,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637144260] [2020-09-25 12:26:47,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:49,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:49,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:49,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 12:26:49,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:49,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1847 [2020-09-25 12:26:49,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:49,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:49,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:49,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:49,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 12:26:49,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:49,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:49,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:49,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:49,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:49,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:26:49,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:49,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:49,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:49,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:49,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:50,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:26:50,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 12:26:50,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:50,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:26:50,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:26:50,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637144260] [2020-09-25 12:26:50,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:50,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:26:50,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876999607] [2020-09-25 12:26:50,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:50,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:50,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:50,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:50,195 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 12:26:52,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:52,403 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-25 12:26:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:26:52,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-09-25 12:26:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:52,410 INFO L225 Difference]: With dead ends: 1258 [2020-09-25 12:26:52,410 INFO L226 Difference]: Without dead ends: 730 [2020-09-25 12:26:52,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-25 12:26:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-25 12:26:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 12:26:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-25 12:26:52,465 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 136 [2020-09-25 12:26:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:52,466 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-25 12:26:52,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-25 12:26:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 12:26:52,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:52,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:52,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:52,471 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1690817075, now seen corresponding path program 1 times [2020-09-25 12:26:52,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:52,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138364280] [2020-09-25 12:26:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:55,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:55,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 12:26:55,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3013 [2020-09-25 12:26:55,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:55,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:26:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 12:26:55,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:55,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:55,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:55,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:55,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:55,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:26:55,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:55,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:26:55,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:55,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:56,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:56,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:56,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-25 12:26:56,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:56,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:26:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:56,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138364280] [2020-09-25 12:26:56,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:56,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:26:56,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111150587] [2020-09-25 12:26:56,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:26:56,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:56,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:26:56,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:26:56,306 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 12 states. [2020-09-25 12:26:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:59,287 INFO L93 Difference]: Finished difference Result 1337 states and 1690 transitions. [2020-09-25 12:26:59,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:26:59,288 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2020-09-25 12:26:59,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:59,295 INFO L225 Difference]: With dead ends: 1337 [2020-09-25 12:26:59,295 INFO L226 Difference]: Without dead ends: 775 [2020-09-25 12:26:59,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:26:59,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-09-25 12:26:59,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 699. [2020-09-25 12:26:59,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 12:26:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 854 transitions. [2020-09-25 12:26:59,363 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 854 transitions. Word has length 145 [2020-09-25 12:26:59,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:59,365 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 854 transitions. [2020-09-25 12:26:59,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:26:59,370 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 854 transitions. [2020-09-25 12:26:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 12:26:59,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:59,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:59,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:59,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:59,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1000161707, now seen corresponding path program 1 times [2020-09-25 12:26:59,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:59,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900662195] [2020-09-25 12:26:59,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:01,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 12:27:01,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:27:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1674 [2020-09-25 12:27:01,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:01,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 12:27:01,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:01,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:01,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:01,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:27:01,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:01,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:01,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:01,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:27:01,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:01,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 12:27:01,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:01,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:27:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:01,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900662195] [2020-09-25 12:27:01,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:01,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:01,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439485160] [2020-09-25 12:27:01,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:01,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:01,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:01,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:01,534 INFO L87 Difference]: Start difference. First operand 699 states and 854 transitions. Second operand 8 states. [2020-09-25 12:27:05,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:05,000 INFO L93 Difference]: Finished difference Result 1659 states and 2138 transitions. [2020-09-25 12:27:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:27:05,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-09-25 12:27:05,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:05,009 INFO L225 Difference]: With dead ends: 1659 [2020-09-25 12:27:05,010 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 12:27:05,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:27:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 12:27:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1037. [2020-09-25 12:27:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2020-09-25 12:27:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1256 transitions. [2020-09-25 12:27:05,052 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1256 transitions. Word has length 147 [2020-09-25 12:27:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:05,053 INFO L479 AbstractCegarLoop]: Abstraction has 1037 states and 1256 transitions. [2020-09-25 12:27:05,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1256 transitions. [2020-09-25 12:27:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 12:27:05,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:05,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:05,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:05,057 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:05,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:05,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1483736159, now seen corresponding path program 1 times [2020-09-25 12:27:05,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:05,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812434421] [2020-09-25 12:27:05,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:07,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:07,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 12:27:10,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:27:10,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:10,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 12:27:10,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:10,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:10,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:27:10,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 12:27:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-25 12:27:10,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 12:27:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:10,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812434421] [2020-09-25 12:27:10,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:10,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:27:10,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830846193] [2020-09-25 12:27:10,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:10,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:10,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:10,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:10,756 INFO L87 Difference]: Start difference. First operand 1037 states and 1256 transitions. Second operand 7 states. [2020-09-25 12:27:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:14,030 INFO L93 Difference]: Finished difference Result 2649 states and 3513 transitions. [2020-09-25 12:27:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:27:14,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-09-25 12:27:14,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:14,048 INFO L225 Difference]: With dead ends: 2649 [2020-09-25 12:27:14,048 INFO L226 Difference]: Without dead ends: 2107 [2020-09-25 12:27:14,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:14,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2020-09-25 12:27:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1833. [2020-09-25 12:27:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-09-25 12:27:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2414 transitions. [2020-09-25 12:27:14,128 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2414 transitions. Word has length 164 [2020-09-25 12:27:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:14,128 INFO L479 AbstractCegarLoop]: Abstraction has 1833 states and 2414 transitions. [2020-09-25 12:27:14,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2414 transitions. [2020-09-25 12:27:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 12:27:14,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:14,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:14,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:27:14,133 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:14,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:14,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1959608273, now seen corresponding path program 1 times [2020-09-25 12:27:14,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:14,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808994868] [2020-09-25 12:27:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:16,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:18,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 12:27:18,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:27:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3992 [2020-09-25 12:27:18,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:18,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 12:27:18,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:18,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:18,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:27:18,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:18,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:18,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:18,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 12:27:18,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:18,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 12:27:18,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:18,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 12:27:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:18,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808994868] [2020-09-25 12:27:18,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:18,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:18,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533789617] [2020-09-25 12:27:18,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:18,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:18,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:18,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:18,626 INFO L87 Difference]: Start difference. First operand 1833 states and 2414 transitions. Second operand 7 states. [2020-09-25 12:27:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:21,012 INFO L93 Difference]: Finished difference Result 3885 states and 5454 transitions. [2020-09-25 12:27:21,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:21,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-09-25 12:27:21,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:21,026 INFO L225 Difference]: With dead ends: 3885 [2020-09-25 12:27:21,027 INFO L226 Difference]: Without dead ends: 2220 [2020-09-25 12:27:21,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:27:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2020-09-25 12:27:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 1988. [2020-09-25 12:27:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-09-25 12:27:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2593 transitions. [2020-09-25 12:27:21,113 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2593 transitions. Word has length 178 [2020-09-25 12:27:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:21,113 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 2593 transitions. [2020-09-25 12:27:21,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2593 transitions. [2020-09-25 12:27:21,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 12:27:21,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:21,120 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:21,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:27:21,121 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:21,121 INFO L82 PathProgramCache]: Analyzing trace with hash 994678845, now seen corresponding path program 1 times [2020-09-25 12:27:21,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:21,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168474335] [2020-09-25 12:27:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:21,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:25,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:26,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 12:27:26,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:26,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-09-25 12:27:26,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:26,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:27:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:26,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:26,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:26,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:26,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:27:26,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:26,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:26,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:26,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 12:27:26,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:26,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:27:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:26,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:26,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 12:27:26,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:26,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 90 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:26,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168474335] [2020-09-25 12:27:26,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:26,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:27:26,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806857065] [2020-09-25 12:27:26,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:27:26,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:26,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:27:26,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:26,738 INFO L87 Difference]: Start difference. First operand 1988 states and 2593 transitions. Second operand 10 states. [2020-09-25 12:27:30,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:30,803 INFO L93 Difference]: Finished difference Result 5537 states and 7636 transitions. [2020-09-25 12:27:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:27:30,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 224 [2020-09-25 12:27:30,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:30,825 INFO L225 Difference]: With dead ends: 5537 [2020-09-25 12:27:30,825 INFO L226 Difference]: Without dead ends: 3717 [2020-09-25 12:27:30,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:27:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states.