/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:08:41,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:08:41,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:08:41,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:08:41,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:08:41,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:08:41,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:08:41,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:08:41,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:08:41,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:08:41,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:08:41,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:08:41,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:08:41,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:08:41,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:08:41,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:08:41,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:08:41,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:08:41,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:08:41,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:08:41,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:08:41,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:08:41,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:08:41,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:08:41,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:08:41,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:08:41,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:08:41,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:08:41,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:08:41,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:08:41,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:08:41,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:08:41,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:08:41,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:08:41,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:08:41,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:08:41,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:08:41,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:08:41,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:08:41,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:08:41,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:08:41,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:08:42,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:08:42,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:08:42,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:08:42,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:08:42,037 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:08:42,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:08:42,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:08:42,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:08:42,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:08:42,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:08:42,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:08:42,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:08:42,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:08:42,040 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:08:42,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:08:42,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:08:42,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:08:42,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:08:42,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:08:42,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:08:42,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:08:42,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:42,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:08:42,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:08:42,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:08:42,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:08:42,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:08:42,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:08:42,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:08:42,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:08:42,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:08:42,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:08:42,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:08:42,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:08:42,556 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:08:42,557 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label13.c [2020-09-25 10:08:42,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfc9e1d43/5fea616167f24cd98b7cdc83c4189c3f/FLAGc1d94760c [2020-09-25 10:08:43,317 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:08:43,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label13.c [2020-09-25 10:08:43,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfc9e1d43/5fea616167f24cd98b7cdc83c4189c3f/FLAGc1d94760c [2020-09-25 10:08:43,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfc9e1d43/5fea616167f24cd98b7cdc83c4189c3f [2020-09-25 10:08:43,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:08:43,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:08:43,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:43,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:08:43,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:08:43,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:43" (1/1) ... [2020-09-25 10:08:43,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fcb5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:43, skipping insertion in model container [2020-09-25 10:08:43,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:43" (1/1) ... [2020-09-25 10:08:43,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:08:43,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:08:44,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:44,228 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:08:44,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:44,340 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:08:44,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44 WrapperNode [2020-09-25 10:08:44,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:44,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:08:44,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:08:44,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:08:44,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:08:44,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:08:44,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:08:44,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:08:44,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:08:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:08:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:08:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:08:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:08:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:08:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:08:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:08:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:08:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:08:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:08:45,790 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:08:45,790 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:08:45,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:45 BoogieIcfgContainer [2020-09-25 10:08:45,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:08:45,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:08:45,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:08:45,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:08:45,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:08:43" (1/3) ... [2020-09-25 10:08:45,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0ded81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:45, skipping insertion in model container [2020-09-25 10:08:45,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (2/3) ... [2020-09-25 10:08:45,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0ded81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:45, skipping insertion in model container [2020-09-25 10:08:45,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:45" (3/3) ... [2020-09-25 10:08:45,813 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label13.c [2020-09-25 10:08:45,825 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:08:45,844 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:08:45,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:08:45,908 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:08:45,909 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:08:45,909 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:08:45,909 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:08:45,909 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:08:45,909 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:08:45,909 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:08:45,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:08:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:08:45,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 10:08:45,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:45,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:45,963 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:45,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:45,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1743137911, now seen corresponding path program 1 times [2020-09-25 10:08:45,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:45,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006081256] [2020-09-25 10:08:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:47,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:49,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:49,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:49,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:51,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:51,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 10:08:51,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:08:51,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:08:51,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:51,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:08:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 10:08:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:08:51,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:51,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:51,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:51,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:51,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:51,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:08:51,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:51,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:51,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:08:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:51,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006081256] [2020-09-25 10:08:51,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:08:51,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:08:51,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472671411] [2020-09-25 10:08:51,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:08:51,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:51,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:08:51,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:08:51,624 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:08:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:53,619 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 10:08:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:08:53,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-09-25 10:08:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:53,645 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 10:08:53,645 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 10:08:53,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:08:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 10:08:53,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 10:08:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 10:08:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 10:08:53,761 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 112 [2020-09-25 10:08:53,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:53,762 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 10:08:53,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:08:53,762 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 10:08:53,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 10:08:53,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:53,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:53,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:08:53,774 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:53,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:53,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1928934468, now seen corresponding path program 1 times [2020-09-25 10:08:53,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:53,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413235726] [2020-09-25 10:08:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:56,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:56,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 10:08:56,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:08:56,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2392 [2020-09-25 10:08:56,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:56,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:56,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 10:08:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 10:08:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:56,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:56,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:56,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:56,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:56,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:56,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:08:56,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:56,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:08:56,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:56,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:56,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:08:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:08:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:56,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:08:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:56,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413235726] [2020-09-25 10:08:56,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:56,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:08:56,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051796025] [2020-09-25 10:08:56,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:08:56,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:56,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:08:56,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:08:56,542 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 6 states. [2020-09-25 10:08:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:59,355 INFO L93 Difference]: Finished difference Result 2060 states and 2681 transitions. [2020-09-25 10:08:59,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:08:59,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 10:08:59,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:59,364 INFO L225 Difference]: With dead ends: 2060 [2020-09-25 10:08:59,365 INFO L226 Difference]: Without dead ends: 1469 [2020-09-25 10:08:59,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:08:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2020-09-25 10:08:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1260. [2020-09-25 10:08:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1260 states. [2020-09-25 10:08:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1640 transitions. [2020-09-25 10:08:59,438 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1640 transitions. Word has length 146 [2020-09-25 10:08:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:59,438 INFO L479 AbstractCegarLoop]: Abstraction has 1260 states and 1640 transitions. [2020-09-25 10:08:59,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:08:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1640 transitions. [2020-09-25 10:08:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 10:08:59,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:59,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:59,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:08:59,446 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:59,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:59,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1576922415, now seen corresponding path program 1 times [2020-09-25 10:08:59,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:59,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513636746] [2020-09-25 10:08:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:04,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:04,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 10:09:04,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:09:04,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 10:09:04,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:04,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:04,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 10:09:04,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:04,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:04,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:04,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:04,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:04,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 10:09:04,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:04,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:04,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:04,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:04,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:09:04,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 10:09:04,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:04,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:05,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513636746] [2020-09-25 10:09:05,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:05,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:05,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941663082] [2020-09-25 10:09:05,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:05,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:05,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:05,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:05,073 INFO L87 Difference]: Start difference. First operand 1260 states and 1640 transitions. Second operand 11 states. [2020-09-25 10:09:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:08,121 INFO L93 Difference]: Finished difference Result 2509 states and 3379 transitions. [2020-09-25 10:09:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:09:08,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 150 [2020-09-25 10:09:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:08,129 INFO L225 Difference]: With dead ends: 2509 [2020-09-25 10:09:08,130 INFO L226 Difference]: Without dead ends: 1008 [2020-09-25 10:09:08,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:09:08,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-09-25 10:09:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 843. [2020-09-25 10:09:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-09-25 10:09:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 999 transitions. [2020-09-25 10:09:08,171 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 999 transitions. Word has length 150 [2020-09-25 10:09:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:08,172 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 999 transitions. [2020-09-25 10:09:08,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:08,172 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 999 transitions. [2020-09-25 10:09:08,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 10:09:08,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:08,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:08,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:09:08,176 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:08,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:08,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2078467712, now seen corresponding path program 1 times [2020-09-25 10:09:08,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:08,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048462261] [2020-09-25 10:09:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:08,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:08,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:11,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 10:09:11,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:09:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3042 [2020-09-25 10:09:11,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:11,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:09:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:09:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 10:09:11,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:11,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:11,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:11,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:11,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:11,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:09:11,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:11,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:09:11,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:11,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:11,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:11,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:09:11,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 10:09:11,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:11,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:11,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:11,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:09:11,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:09:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:09:11,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048462261] [2020-09-25 10:09:11,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:11,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:09:11,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835731419] [2020-09-25 10:09:11,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:09:11,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:11,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:09:11,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:09:11,769 INFO L87 Difference]: Start difference. First operand 843 states and 999 transitions. Second operand 7 states. [2020-09-25 10:09:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:13,727 INFO L93 Difference]: Finished difference Result 2314 states and 2826 transitions. [2020-09-25 10:09:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:09:13,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 10:09:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:13,741 INFO L225 Difference]: With dead ends: 2314 [2020-09-25 10:09:13,742 INFO L226 Difference]: Without dead ends: 1324 [2020-09-25 10:09:13,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:09:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-09-25 10:09:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1142. [2020-09-25 10:09:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-09-25 10:09:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1326 transitions. [2020-09-25 10:09:13,809 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1326 transitions. Word has length 152 [2020-09-25 10:09:13,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:13,810 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 1326 transitions. [2020-09-25 10:09:13,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:09:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1326 transitions. [2020-09-25 10:09:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 10:09:13,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:13,814 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:13,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:09:13,815 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:13,815 INFO L82 PathProgramCache]: Analyzing trace with hash 196277049, now seen corresponding path program 1 times [2020-09-25 10:09:13,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:13,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583090559] [2020-09-25 10:09:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:16,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 10:09:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:09:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2330 [2020-09-25 10:09:16,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:16,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:09:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:09:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 10:09:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:16,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:16,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:16,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:09:16,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:16,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:16,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:09:16,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:16,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:16,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:09:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:16,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:09:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:16,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:16,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:09:16,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:16,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 10:09:16,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:16,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:09:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 10:09:16,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583090559] [2020-09-25 10:09:16,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:16,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:09:16,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928804226] [2020-09-25 10:09:16,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:09:16,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:16,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:09:16,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:09:16,691 INFO L87 Difference]: Start difference. First operand 1142 states and 1326 transitions. Second operand 7 states. [2020-09-25 10:09:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:18,466 INFO L93 Difference]: Finished difference Result 3086 states and 3762 transitions. [2020-09-25 10:09:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:09:18,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-25 10:09:18,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:18,477 INFO L225 Difference]: With dead ends: 3086 [2020-09-25 10:09:18,477 INFO L226 Difference]: Without dead ends: 1966 [2020-09-25 10:09:18,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:09:18,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2020-09-25 10:09:18,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1920. [2020-09-25 10:09:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-09-25 10:09:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2253 transitions. [2020-09-25 10:09:18,546 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2253 transitions. Word has length 169 [2020-09-25 10:09:18,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:18,547 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2253 transitions. [2020-09-25 10:09:18,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:09:18,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2253 transitions. [2020-09-25 10:09:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 10:09:18,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:18,554 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:18,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:09:18,555 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:18,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1650536411, now seen corresponding path program 1 times [2020-09-25 10:09:18,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:18,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081046086] [2020-09-25 10:09:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:18,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:23,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:23,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 10:09:23,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:09:23,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:09:23,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:23,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:23,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:09:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:09:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-09-25 10:09:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:23,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:23,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:23,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 10:09:23,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:23,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:23,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:23,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:23,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:23,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:23,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:23,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:23,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:09:23,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:23,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:09:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:09:23,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:23,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:09:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:24,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:24,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:09:24,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:24,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-09-25 10:09:24,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:24,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 10:09:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:09:24,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081046086] [2020-09-25 10:09:24,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:24,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:09:24,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891662321] [2020-09-25 10:09:24,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:09:24,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:24,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:09:24,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:09:24,759 INFO L87 Difference]: Start difference. First operand 1920 states and 2253 transitions. Second operand 14 states. [2020-09-25 10:09:30,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:30,086 INFO L93 Difference]: Finished difference Result 6434 states and 7885 transitions. [2020-09-25 10:09:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-25 10:09:30,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 213 [2020-09-25 10:09:30,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:30,105 INFO L225 Difference]: With dead ends: 6434 [2020-09-25 10:09:30,105 INFO L226 Difference]: Without dead ends: 4135 [2020-09-25 10:09:30,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=451, Invalid=1901, Unknown=0, NotChecked=0, Total=2352 [2020-09-25 10:09:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2020-09-25 10:09:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 3880. [2020-09-25 10:09:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3880 states. [2020-09-25 10:09:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 4591 transitions. [2020-09-25 10:09:30,244 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 4591 transitions. Word has length 213 [2020-09-25 10:09:30,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:30,245 INFO L479 AbstractCegarLoop]: Abstraction has 3880 states and 4591 transitions. [2020-09-25 10:09:30,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:09:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 4591 transitions. [2020-09-25 10:09:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 10:09:30,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:30,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:30,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:09:30,260 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:30,260 INFO L82 PathProgramCache]: Analyzing trace with hash -44650108, now seen corresponding path program 1 times [2020-09-25 10:09:30,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:30,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490526671] [2020-09-25 10:09:30,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:30,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:30,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 10:09:30,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:30,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-25 10:09:30,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:30,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 10:09:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 10:09:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:30,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:30,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:30,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:30,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:30,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:09:30,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:30,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:09:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:09:30,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:09:30,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:30,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:30,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:09:30,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:30,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:09:30,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:30,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:30,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:30,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:30,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:09:30,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:30,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 10:09:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:30,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:30,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:09:30,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:30,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 10:09:30,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:30,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 10:09:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:09:31,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490526671] [2020-09-25 10:09:31,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:31,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:09:31,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316768009] [2020-09-25 10:09:31,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:09:31,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:31,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:09:31,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:09:31,123 INFO L87 Difference]: Start difference. First operand 3880 states and 4591 transitions. Second operand 8 states.