/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:37:57,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:37:57,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:37:57,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:37:57,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:37:57,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:37:57,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:37:57,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:37:57,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:37:57,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:37:57,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:37:57,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:37:57,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:37:57,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:37:57,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:37:57,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:37:57,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:37:57,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:37:57,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:37:57,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:37:57,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:37:57,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:37:57,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:37:57,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:37:57,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:37:57,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:37:57,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:37:57,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:37:57,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:37:57,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:37:57,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:37:57,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:37:57,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:37:57,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:37:57,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:37:57,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:37:57,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:37:57,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:37:57,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:37:57,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:37:58,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:37:58,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 14:37:58,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:37:58,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:37:58,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:37:58,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:37:58,036 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:37:58,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:37:58,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:37:58,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:37:58,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:37:58,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:37:58,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:37:58,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:37:58,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:37:58,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:37:58,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:37:58,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:37:58,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:37:58,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:37:58,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:37:58,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:37:58,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:37:58,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:37:58,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:37:58,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:37:58,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:37:58,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:37:58,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:37:58,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:37:58,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:37:58,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:37:58,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:37:58,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:37:58,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:37:58,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:37:58,391 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:37:58,391 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03.c [2020-10-12 14:37:58,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/503009048/25eca66ec7604a7ab49fd5ac68122ef4/FLAG120a08522 [2020-10-12 14:37:59,144 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:37:59,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label03.c [2020-10-12 14:37:59,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/503009048/25eca66ec7604a7ab49fd5ac68122ef4/FLAG120a08522 [2020-10-12 14:37:59,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/503009048/25eca66ec7604a7ab49fd5ac68122ef4 [2020-10-12 14:37:59,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:37:59,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:37:59,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:37:59,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:37:59,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:37:59,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:37:59" (1/1) ... [2020-10-12 14:37:59,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6317371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:37:59, skipping insertion in model container [2020-10-12 14:37:59,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:37:59" (1/1) ... [2020-10-12 14:37:59,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:37:59,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:38:00,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:38:00,685 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:38:01,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:38:01,118 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:38:01,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:01 WrapperNode [2020-10-12 14:38:01,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:38:01,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:38:01,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:38:01,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:38:01,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:01" (1/1) ... [2020-10-12 14:38:01,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:01" (1/1) ... [2020-10-12 14:38:01,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:01" (1/1) ... [2020-10-12 14:38:01,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:01" (1/1) ... [2020-10-12 14:38:01,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:01" (1/1) ... [2020-10-12 14:38:01,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:01" (1/1) ... [2020-10-12 14:38:01,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:01" (1/1) ... [2020-10-12 14:38:01,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:38:01,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:38:01,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:38:01,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:38:01,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:38:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:38:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:38:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:38:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:38:01,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:38:01,412 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:38:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:38:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:38:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:38:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:38:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:38:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:38:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:38:09,940 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:38:09,941 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:38:09,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:38:09 BoogieIcfgContainer [2020-10-12 14:38:09,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:38:09,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:38:09,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:38:09,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:38:09,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:37:59" (1/3) ... [2020-10-12 14:38:09,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57151d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:38:09, skipping insertion in model container [2020-10-12 14:38:09,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:01" (2/3) ... [2020-10-12 14:38:09,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57151d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:38:09, skipping insertion in model container [2020-10-12 14:38:09,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:38:09" (3/3) ... [2020-10-12 14:38:09,958 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label03.c [2020-10-12 14:38:09,968 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:38:09,976 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:38:09,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:38:10,017 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:38:10,017 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:38:10,018 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:38:10,018 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:38:10,018 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:38:10,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:38:10,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:38:10,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:38:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:38:10,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 14:38:10,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:38:10,058 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] [2020-10-12 14:38:10,059 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:38:10,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:38:10,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1421926551, now seen corresponding path program 1 times [2020-10-12 14:38:10,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:38:10,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189670480] [2020-10-12 14:38:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:38:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:10,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:10,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 14:38:10,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-12 14:38:10,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:38:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:38:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 14:38:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:38:10,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:38:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:10,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:10,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:38:10,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:10,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 14:38:10,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:38:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:38:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:38:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:38:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:38:10,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189670480] [2020-10-12 14:38:10,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:38:10,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:38:10,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746908627] [2020-10-12 14:38:10,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:38:10,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:38:10,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:38:10,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:38:10,929 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-12 14:38:11,080 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-10-12 14:38:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:38:22,765 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-12 14:38:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:38:22,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-12 14:38:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:38:22,794 INFO L225 Difference]: With dead ends: 1689 [2020-10-12 14:38:22,795 INFO L226 Difference]: Without dead ends: 1009 [2020-10-12 14:38:22,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:38:22,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-12 14:38:22,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-12 14:38:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-12 14:38:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-12 14:38:22,926 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 55 [2020-10-12 14:38:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:38:22,927 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-12 14:38:22,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:38:22,927 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-12 14:38:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 14:38:22,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:38:22,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:38:22,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:38:22,935 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:38:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:38:22,935 INFO L82 PathProgramCache]: Analyzing trace with hash -775740193, now seen corresponding path program 1 times [2020-10-12 14:38:22,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:38:22,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425767261] [2020-10-12 14:38:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:38:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:23,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:23,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:23,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 14:38:23,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:38:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-12 14:38:23,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:38:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:38:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 14:38:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:38:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:38:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:23,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:23,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:38:23,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:38:23,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:38:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:38:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:38:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:23,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:38:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:24,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:24,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:38:24,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:38:24,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-12 14:38:24,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:38:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:38:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:38:24,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:38:24,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425767261] [2020-10-12 14:38:24,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:38:24,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:38:24,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028780202] [2020-10-12 14:38:24,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:38:24,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:38:24,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:38:24,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:38:24,248 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 6 states. [2020-10-12 14:38:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:38:36,180 INFO L93 Difference]: Finished difference Result 2451 states and 3903 transitions. [2020-10-12 14:38:36,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:38:36,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-10-12 14:38:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:38:36,189 INFO L225 Difference]: With dead ends: 2451 [2020-10-12 14:38:36,189 INFO L226 Difference]: Without dead ends: 1466 [2020-10-12 14:38:36,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:38:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-10-12 14:38:36,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1452. [2020-10-12 14:38:36,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-12 14:38:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1973 transitions. [2020-10-12 14:38:36,233 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1973 transitions. Word has length 126 [2020-10-12 14:38:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:38:36,233 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1973 transitions. [2020-10-12 14:38:36,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:38:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1973 transitions. [2020-10-12 14:38:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 14:38:36,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:38:36,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:38:36,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:38:36,238 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:38:36,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:38:36,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1672472177, now seen corresponding path program 1 times [2020-10-12 14:38:36,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:38:36,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942910901] [2020-10-12 14:38:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:38:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:37,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:37,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 14:38:37,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:38:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-12 14:38:37,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:38:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:38:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 14:38:37,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:37,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:38:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:37,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:37,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:37,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:38:37,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:37,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:38:37,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:37,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:38:37,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:38:37,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:38:37,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:38:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:37,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:37,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:37,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:38:37,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-12 14:38:37,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:38:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:38:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:38:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:38:37,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942910901] [2020-10-12 14:38:37,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:38:37,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:38:37,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411430185] [2020-10-12 14:38:37,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:38:37,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:38:37,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:38:37,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:38:37,555 INFO L87 Difference]: Start difference. First operand 1452 states and 1973 transitions. Second operand 8 states. [2020-10-12 14:38:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:38:51,629 INFO L93 Difference]: Finished difference Result 3022 states and 4467 transitions. [2020-10-12 14:38:51,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:38:51,636 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2020-10-12 14:38:51,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:38:51,647 INFO L225 Difference]: With dead ends: 3022 [2020-10-12 14:38:51,647 INFO L226 Difference]: Without dead ends: 1966 [2020-10-12 14:38:51,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:38:51,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2020-10-12 14:38:51,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1923. [2020-10-12 14:38:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1923 states. [2020-10-12 14:38:51,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2723 transitions. [2020-10-12 14:38:51,708 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2723 transitions. Word has length 129 [2020-10-12 14:38:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:38:51,709 INFO L479 AbstractCegarLoop]: Abstraction has 1923 states and 2723 transitions. [2020-10-12 14:38:51,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:38:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2723 transitions. [2020-10-12 14:38:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 14:38:51,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:38:51,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:38:51,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:38:51,713 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:38:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:38:51,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1885902463, now seen corresponding path program 1 times [2020-10-12 14:38:51,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:38:51,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684374650] [2020-10-12 14:38:51,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:38:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:51,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:52,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:52,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 14:38:52,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:52,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-12 14:38:52,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:38:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:38:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 14:38:52,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:52,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:38:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:52,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:52,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:52,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:38:52,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:52,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:38:52,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:38:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:38:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:38:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:52,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:38:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:52,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:52,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:52,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:38:52,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:52,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 14:38:52,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:52,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:38:52,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:38:52,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:38:52,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:38:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:38:52,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684374650] [2020-10-12 14:38:52,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:38:52,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:38:52,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329087697] [2020-10-12 14:38:52,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:38:52,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:38:52,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:38:52,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:38:52,383 INFO L87 Difference]: Start difference. First operand 1923 states and 2723 transitions. Second operand 5 states. [2020-10-12 14:39:05,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:39:05,535 INFO L93 Difference]: Finished difference Result 4795 states and 7194 transitions. [2020-10-12 14:39:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:39:05,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-12 14:39:05,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:39:05,552 INFO L225 Difference]: With dead ends: 4795 [2020-10-12 14:39:05,552 INFO L226 Difference]: Without dead ends: 3311 [2020-10-12 14:39:05,556 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 [2020-10-12 14:39:05,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2020-10-12 14:39:05,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3302. [2020-10-12 14:39:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3302 states. [2020-10-12 14:39:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4455 transitions. [2020-10-12 14:39:05,631 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4455 transitions. Word has length 142 [2020-10-12 14:39:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:39:05,631 INFO L479 AbstractCegarLoop]: Abstraction has 3302 states and 4455 transitions. [2020-10-12 14:39:05,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:39:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4455 transitions. [2020-10-12 14:39:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 14:39:05,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:05,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:39:05,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:39:05,635 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:05,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:05,635 INFO L82 PathProgramCache]: Analyzing trace with hash -69218638, now seen corresponding path program 1 times [2020-10-12 14:39:05,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:05,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623307283] [2020-10-12 14:39:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:05,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:05,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:07,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:07,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 14:39:07,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:39:07,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2084 [2020-10-12 14:39:07,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:39:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:39:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 14:39:07,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:07,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:07,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:07,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:07,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:07,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:39:07,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:39:07,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:07,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:39:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:07,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:08,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:08,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:39:08,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 14:39:08,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:39:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:39:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 14:39:08,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:39:08,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623307283] [2020-10-12 14:39:08,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:39:08,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:39:08,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989312587] [2020-10-12 14:39:08,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:39:08,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:08,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:39:08,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:39:08,276 INFO L87 Difference]: Start difference. First operand 3302 states and 4455 transitions. Second operand 7 states. [2020-10-12 14:39:20,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:39:20,226 INFO L93 Difference]: Finished difference Result 6294 states and 8668 transitions. [2020-10-12 14:39:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:39:20,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-12 14:39:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:39:20,249 INFO L225 Difference]: With dead ends: 6294 [2020-10-12 14:39:20,250 INFO L226 Difference]: Without dead ends: 3431 [2020-10-12 14:39:20,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:39:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2020-10-12 14:39:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3382. [2020-10-12 14:39:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3382 states. [2020-10-12 14:39:20,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 4577 transitions. [2020-10-12 14:39:20,351 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 4577 transitions. Word has length 164 [2020-10-12 14:39:20,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:39:20,352 INFO L479 AbstractCegarLoop]: Abstraction has 3382 states and 4577 transitions. [2020-10-12 14:39:20,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:39:20,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 4577 transitions. [2020-10-12 14:39:20,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 14:39:20,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:20,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:39:20,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:39:20,355 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:20,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash -864961378, now seen corresponding path program 1 times [2020-10-12 14:39:20,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:20,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346503956] [2020-10-12 14:39:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:20,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:21,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:21,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:39:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:39:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-10-12 14:39:21,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:39:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:39:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 14:39:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:21,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:21,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:21,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:21,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:39:21,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:21,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:39:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:39:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:21,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:21,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:21,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 14:39:21,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:21,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 14:39:21,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:39:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:39:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 14:39:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:39:22,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346503956] [2020-10-12 14:39:22,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:39:22,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:39:22,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356232392] [2020-10-12 14:39:22,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:39:22,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:22,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:39:22,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:39:22,058 INFO L87 Difference]: Start difference. First operand 3382 states and 4577 transitions. Second operand 7 states. [2020-10-12 14:39:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:39:34,525 INFO L93 Difference]: Finished difference Result 9328 states and 13175 transitions. [2020-10-12 14:39:34,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:39:34,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-12 14:39:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:39:34,553 INFO L225 Difference]: With dead ends: 9328 [2020-10-12 14:39:34,554 INFO L226 Difference]: Without dead ends: 6385 [2020-10-12 14:39:34,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:39:34,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2020-10-12 14:39:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 5329. [2020-10-12 14:39:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5329 states. [2020-10-12 14:39:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5329 states to 5329 states and 6680 transitions. [2020-10-12 14:39:34,696 INFO L78 Accepts]: Start accepts. Automaton has 5329 states and 6680 transitions. Word has length 170 [2020-10-12 14:39:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:39:34,697 INFO L479 AbstractCegarLoop]: Abstraction has 5329 states and 6680 transitions. [2020-10-12 14:39:34,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:39:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5329 states and 6680 transitions. [2020-10-12 14:39:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-12 14:39:34,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:34,701 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:39:34,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:39:34,702 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:34,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1583044173, now seen corresponding path program 1 times [2020-10-12 14:39:34,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:34,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657176426] [2020-10-12 14:39:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:35,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:35,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:35,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-12 14:39:35,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:39:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-12 14:39:35,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:39:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:39:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:39:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:35,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:35,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:35,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:35,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:35,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:39:35,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:39:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:35,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:39:35,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:35,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:39:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:35,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:35,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:39:35,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:35,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 14:39:35,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:39:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:35,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:39:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:35,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:35,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:35,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 14:39:35,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:35,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 14:39:35,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:39:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:39:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 14:39:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:39:35,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657176426] [2020-10-12 14:39:35,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:39:35,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:39:35,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74351705] [2020-10-12 14:39:35,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:39:35,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:35,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:39:35,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:39:35,975 INFO L87 Difference]: Start difference. First operand 5329 states and 6680 transitions. Second operand 7 states. [2020-10-12 14:39:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:39:49,568 INFO L93 Difference]: Finished difference Result 12552 states and 17063 transitions. [2020-10-12 14:39:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:39:49,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-12 14:39:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:39:49,613 INFO L225 Difference]: With dead ends: 12552 [2020-10-12 14:39:49,614 INFO L226 Difference]: Without dead ends: 7662 [2020-10-12 14:39:49,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:39:49,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7662 states. [2020-10-12 14:39:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7662 to 7595. [2020-10-12 14:39:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7595 states. [2020-10-12 14:39:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7595 states to 7595 states and 9717 transitions. [2020-10-12 14:39:49,867 INFO L78 Accepts]: Start accepts. Automaton has 7595 states and 9717 transitions. Word has length 215 [2020-10-12 14:39:49,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:39:49,868 INFO L479 AbstractCegarLoop]: Abstraction has 7595 states and 9717 transitions. [2020-10-12 14:39:49,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:39:49,869 INFO L276 IsEmpty]: Start isEmpty. Operand 7595 states and 9717 transitions. [2020-10-12 14:39:49,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-12 14:39:49,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:49,874 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, 2, 2, 2, 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] [2020-10-12 14:39:49,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:39:49,874 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:49,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:49,875 INFO L82 PathProgramCache]: Analyzing trace with hash -706440303, now seen corresponding path program 1 times [2020-10-12 14:39:49,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:49,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183233657] [2020-10-12 14:39:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:49,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:50,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:50,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:53,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:53,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-12 14:39:53,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:39:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3621 [2020-10-12 14:39:53,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:39:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:39:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-12 14:39:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:39:53,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:53,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:53,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:53,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:53,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:39:53,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:53,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:39:53,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:39:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:53,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:53,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:39:53,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:53,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 14:39:53,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:53,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:39:53,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:39:53,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:39:53,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:39:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:54,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:54,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:39:54,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 14:39:54,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:39:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:39:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:39:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:39:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 14:39:54,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183233657] [2020-10-12 14:39:54,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:39:54,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:39:54,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188777168] [2020-10-12 14:39:54,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:39:54,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:54,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:39:54,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:39:54,328 INFO L87 Difference]: Start difference. First operand 7595 states and 9717 transitions. Second operand 9 states. [2020-10-12 14:40:32,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:32,622 INFO L93 Difference]: Finished difference Result 22340 states and 31235 transitions. [2020-10-12 14:40:32,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 14:40:32,624 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 217 [2020-10-12 14:40:32,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:32,693 INFO L225 Difference]: With dead ends: 22340 [2020-10-12 14:40:32,693 INFO L226 Difference]: Without dead ends: 15184 [2020-10-12 14:40:32,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-12 14:40:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15184 states. [2020-10-12 14:40:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15184 to 14130. [2020-10-12 14:40:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14130 states. [2020-10-12 14:40:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14130 states to 14130 states and 18286 transitions. [2020-10-12 14:40:33,185 INFO L78 Accepts]: Start accepts. Automaton has 14130 states and 18286 transitions. Word has length 217 [2020-10-12 14:40:33,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:33,186 INFO L479 AbstractCegarLoop]: Abstraction has 14130 states and 18286 transitions. [2020-10-12 14:40:33,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:40:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 14130 states and 18286 transitions. [2020-10-12 14:40:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-12 14:40:33,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:33,198 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:40:33,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:40:33,199 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:33,200 INFO L82 PathProgramCache]: Analyzing trace with hash 8243234, now seen corresponding path program 1 times [2020-10-12 14:40:33,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:33,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451934898] [2020-10-12 14:40:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:33,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:33,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:33,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-12 14:40:33,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:33,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-12 14:40:33,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:33,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-12 14:40:33,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 14:40:33,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:34,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:34,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:34,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:34,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:34,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:40:34,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:34,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:34,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:34,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:34,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:34,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:40:34,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:34,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 14:40:34,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:40:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:34,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:34,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:40:34,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 14:40:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:40:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:34,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:40:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:34,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:34,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:34,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:40:34,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 14:40:34,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:40:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-12 14:40:34,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451934898] [2020-10-12 14:40:34,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:34,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:40:34,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744010111] [2020-10-12 14:40:34,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:40:34,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:34,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:40:34,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:40:34,745 INFO L87 Difference]: Start difference. First operand 14130 states and 18286 transitions. Second operand 7 states. [2020-10-12 14:40:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:54,514 INFO L93 Difference]: Finished difference Result 35282 states and 47199 transitions. [2020-10-12 14:40:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:40:54,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-12 14:40:54,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:54,604 INFO L225 Difference]: With dead ends: 35282 [2020-10-12 14:40:54,605 INFO L226 Difference]: Without dead ends: 21591 [2020-10-12 14:40:54,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:40:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21591 states. [2020-10-12 14:40:55,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21591 to 19265. [2020-10-12 14:40:55,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19265 states. [2020-10-12 14:40:55,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19265 states to 19265 states and 25815 transitions. [2020-10-12 14:40:55,177 INFO L78 Accepts]: Start accepts. Automaton has 19265 states and 25815 transitions. Word has length 299 [2020-10-12 14:40:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:55,178 INFO L479 AbstractCegarLoop]: Abstraction has 19265 states and 25815 transitions. [2020-10-12 14:40:55,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:40:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 19265 states and 25815 transitions. [2020-10-12 14:40:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 14:40:55,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:55,192 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:40:55,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:40:55,194 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:55,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:55,195 INFO L82 PathProgramCache]: Analyzing trace with hash -885718644, now seen corresponding path program 1 times [2020-10-12 14:40:55,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:55,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531414223] [2020-10-12 14:40:55,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:55,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:55,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:57,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:59,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:59,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-12 14:40:59,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:40:59,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4307 [2020-10-12 14:40:59,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:40:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-12 14:40:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 14:40:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:59,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:59,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:59,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:59,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:59,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:40:59,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:59,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:59,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:59,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:59,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:40:59,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:59,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 14:40:59,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:59,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:59,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:40:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:59,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:59,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:40:59,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 14:40:59,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:40:59,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:00,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:41:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:00,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:00,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:00,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:41:00,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:41:00,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-12 14:41:00,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:41:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 234 proven. 49 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 14:41:00,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531414223] [2020-10-12 14:41:00,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:00,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:41:00,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385890963] [2020-10-12 14:41:00,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:41:00,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:00,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:41:00,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:41:00,410 INFO L87 Difference]: Start difference. First operand 19265 states and 25815 transitions. Second operand 6 states. [2020-10-12 14:41:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:41:21,535 INFO L93 Difference]: Finished difference Result 46533 states and 64210 transitions. [2020-10-12 14:41:21,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:41:21,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 322 [2020-10-12 14:41:21,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:41:21,632 INFO L225 Difference]: With dead ends: 46533 [2020-10-12 14:41:21,632 INFO L226 Difference]: Without dead ends: 26741 [2020-10-12 14:41:21,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:41:21,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26741 states. [2020-10-12 14:41:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26741 to 25842. [2020-10-12 14:41:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25842 states. [2020-10-12 14:41:22,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25842 states to 25842 states and 35118 transitions. [2020-10-12 14:41:22,280 INFO L78 Accepts]: Start accepts. Automaton has 25842 states and 35118 transitions. Word has length 322 [2020-10-12 14:41:22,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:41:22,281 INFO L479 AbstractCegarLoop]: Abstraction has 25842 states and 35118 transitions. [2020-10-12 14:41:22,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:41:22,281 INFO L276 IsEmpty]: Start isEmpty. Operand 25842 states and 35118 transitions. [2020-10-12 14:41:22,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-12 14:41:22,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:41:22,289 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:41:22,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:41:22,290 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:41:22,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:41:22,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1279029928, now seen corresponding path program 1 times [2020-10-12 14:41:22,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:41:22,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620186951] [2020-10-12 14:41:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:22,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:24,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:24,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-12 14:41:24,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:41:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2093 [2020-10-12 14:41:24,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:41:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:41:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:24,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:24,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:24,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:24,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:24,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:41:24,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:24,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:24,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:24,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:24,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:24,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:41:24,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 14:41:24,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:41:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:41:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:24,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:41:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:24,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:24,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:41:24,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 14:41:24,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 14:41:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:25,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:41:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:25,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:25,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:25,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:41:25,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:25,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 14:41:25,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 14:41:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 232 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-12 14:41:25,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620186951] [2020-10-12 14:41:25,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:25,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:41:25,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573301841] [2020-10-12 14:41:25,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:41:25,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:25,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:41:25,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:41:25,673 INFO L87 Difference]: Start difference. First operand 25842 states and 35118 transitions. Second operand 7 states. [2020-10-12 14:41:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:41:47,934 INFO L93 Difference]: Finished difference Result 55737 states and 75413 transitions. [2020-10-12 14:41:47,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:41:47,937 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-12 14:41:47,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:41:48,048 INFO L225 Difference]: With dead ends: 55737 [2020-10-12 14:41:48,048 INFO L226 Difference]: Without dead ends: 29901 [2020-10-12 14:41:48,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:41:48,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29901 states. [2020-10-12 14:41:48,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29901 to 29835. [2020-10-12 14:41:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29835 states. [2020-10-12 14:41:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29835 states to 29835 states and 39962 transitions. [2020-10-12 14:41:48,646 INFO L78 Accepts]: Start accepts. Automaton has 29835 states and 39962 transitions. Word has length 327 [2020-10-12 14:41:48,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:41:48,647 INFO L479 AbstractCegarLoop]: Abstraction has 29835 states and 39962 transitions. [2020-10-12 14:41:48,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:41:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 29835 states and 39962 transitions. [2020-10-12 14:41:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-12 14:41:48,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:41:48,654 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:41:48,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:41:48,655 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:41:48,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:41:48,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1392041993, now seen corresponding path program 1 times [2020-10-12 14:41:48,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:41:48,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581552204] [2020-10-12 14:41:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:49,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:49,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-12 14:41:49,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-12 14:41:49,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-12 14:41:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:41:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:49,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:49,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:49,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:41:49,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:49,713 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-12 14:41:49,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:49,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:49,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:41:49,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:41:49,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:41:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:49,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:49,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:41:49,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:49,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 14:41:49,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:41:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:41:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:41:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:50,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:50,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 14:41:50,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:50,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-12 14:41:50,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:41:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-12 14:41:50,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581552204] [2020-10-12 14:41:50,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:50,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:41:50,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690354466] [2020-10-12 14:41:50,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:41:50,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:50,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:41:50,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:41:50,291 INFO L87 Difference]: Start difference. First operand 29835 states and 39962 transitions. Second operand 7 states.