/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:38,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:38,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:38,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:38,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:38,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:38,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:38,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:38,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:38,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:38,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:38,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:38,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:38,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:38,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:38,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:38,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:38,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:38,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:38,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:38,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:38,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:38,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:38,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:38,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:38,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:38,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:38,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:38,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:38,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:38,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:38,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:38,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:38,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:38,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:38,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:38,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:38,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:38,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:38,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:38,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:38,939 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 05:34:38,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:38,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:38,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:38,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:38,996 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:38,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:38,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:38,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:38,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:38,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:38,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:39,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:39,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:39,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:39,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:39,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:39,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:39,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:39,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:39,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:39,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:39,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:39,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:39,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:39,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:39,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:39,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:39,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:39,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:39,004 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:34:39,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:39,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:39,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:39,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:39,524 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:39,525 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 05:34:39,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10fdf119f/ae9de1d7c99c4bedb69b087c1d29ac51/FLAG7c38a94e8 [2020-09-25 05:34:40,246 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:40,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 05:34:40,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10fdf119f/ae9de1d7c99c4bedb69b087c1d29ac51/FLAG7c38a94e8 [2020-09-25 05:34:40,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10fdf119f/ae9de1d7c99c4bedb69b087c1d29ac51 [2020-09-25 05:34:40,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:40,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:40,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:40,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:40,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:40,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:40" (1/1) ... [2020-09-25 05:34:40,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:40, skipping insertion in model container [2020-09-25 05:34:40,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:40" (1/1) ... [2020-09-25 05:34:40,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:40,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:41,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:41,075 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:41,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:41,299 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:41,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:41 WrapperNode [2020-09-25 05:34:41,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:41,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:41,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:41,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:41,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:41" (1/1) ... [2020-09-25 05:34:41,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:41" (1/1) ... [2020-09-25 05:34:41,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:41" (1/1) ... [2020-09-25 05:34:41,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:41" (1/1) ... [2020-09-25 05:34:41,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:41" (1/1) ... [2020-09-25 05:34:41,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:41" (1/1) ... [2020-09-25 05:34:41,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:41" (1/1) ... [2020-09-25 05:34:41,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:41,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:41,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:41,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:41,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:41" (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 05:34:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:42,812 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:42,813 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:42,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:42 BoogieIcfgContainer [2020-09-25 05:34:42,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:42,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:42,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:42,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:42,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:40" (1/3) ... [2020-09-25 05:34:42,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad18132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:42, skipping insertion in model container [2020-09-25 05:34:42,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:41" (2/3) ... [2020-09-25 05:34:42,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad18132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:42, skipping insertion in model container [2020-09-25 05:34:42,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:42" (3/3) ... [2020-09-25 05:34:42,842 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2020-09-25 05:34:42,853 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:42,864 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:42,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:42,918 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:42,919 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:42,919 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:42,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:42,919 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:42,919 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:42,920 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:42,920 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:42,954 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 05:34:42,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:42,985 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] [2020-09-25 05:34:42,985 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:42,991 INFO L82 PathProgramCache]: Analyzing trace with hash 602782831, now seen corresponding path program 1 times [2020-09-25 05:34:43,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:43,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002017105] [2020-09-25 05:34:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:48,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 05:34:48,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:48,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:34:48,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:48,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 05:34:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:34:48,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:48,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:48,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:48,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 05:34:48,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:48,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:48,541 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 05:34:48,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002017105] [2020-09-25 05:34:48,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:48,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:34:48,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948912038] [2020-09-25 05:34:48,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:34:48,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:48,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:34:48,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:34:48,582 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:34:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:50,806 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 05:34:50,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:50,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-25 05:34:50,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:50,835 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 05:34:50,835 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 05:34:50,846 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 05:34:50,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 05:34:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 05:34:50,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:34:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:34:50,959 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 104 [2020-09-25 05:34:50,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:50,961 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:34:50,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:34:50,962 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:34:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 05:34:50,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:50,972 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:34:50,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:50,973 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:50,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:50,973 INFO L82 PathProgramCache]: Analyzing trace with hash -435684201, now seen corresponding path program 1 times [2020-09-25 05:34:50,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:50,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557014550] [2020-09-25 05:34:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:52,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:56,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 05:34:56,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 05:34:56,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:56,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:34:56,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:34:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:34:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:56,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:56,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:56,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:56,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:56,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:56,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:56,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:56,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:56,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:56,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:34:56,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:56,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:56,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:56,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:34:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:56,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557014550] [2020-09-25 05:34:56,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:56,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:56,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231606859] [2020-09-25 05:34:56,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:56,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:56,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:56,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:56,283 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 05:34:58,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:58,471 INFO L93 Difference]: Finished difference Result 1561 states and 1929 transitions. [2020-09-25 05:34:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:58,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-25 05:34:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:58,488 INFO L225 Difference]: With dead ends: 1561 [2020-09-25 05:34:58,489 INFO L226 Difference]: Without dead ends: 982 [2020-09-25 05:34:58,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-09-25 05:34:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 748. [2020-09-25 05:34:58,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 05:34:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 905 transitions. [2020-09-25 05:34:58,549 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 905 transitions. Word has length 125 [2020-09-25 05:34:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:58,552 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 905 transitions. [2020-09-25 05:34:58,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 905 transitions. [2020-09-25 05:34:58,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 05:34:58,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:58,560 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:58,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:58,560 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:58,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:58,561 INFO L82 PathProgramCache]: Analyzing trace with hash 305762680, now seen corresponding path program 1 times [2020-09-25 05:34:58,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:58,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926415788] [2020-09-25 05:34:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:58,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:03,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 05:35:03,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:35:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 05:35:03,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:03,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:35:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 05:35:03,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:03,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:03,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:03,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:03,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:03,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:35:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:03,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:03,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:35:03,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 05:35:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:03,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:35:03,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:03,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926415788] [2020-09-25 05:35:03,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:03,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:03,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182137250] [2020-09-25 05:35:03,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:03,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:03,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:03,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:03,983 INFO L87 Difference]: Start difference. First operand 748 states and 905 transitions. Second operand 5 states. [2020-09-25 05:35:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:05,767 INFO L93 Difference]: Finished difference Result 1957 states and 2468 transitions. [2020-09-25 05:35:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:05,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 05:35:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:05,781 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 05:35:05,783 INFO L226 Difference]: Without dead ends: 1233 [2020-09-25 05:35:05,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-25 05:35:05,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1177. [2020-09-25 05:35:05,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 05:35:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1466 transitions. [2020-09-25 05:35:05,835 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1466 transitions. Word has length 134 [2020-09-25 05:35:05,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:05,837 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1466 transitions. [2020-09-25 05:35:05,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:05,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1466 transitions. [2020-09-25 05:35:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 05:35:05,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:05,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:05,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:35:05,852 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:05,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:05,853 INFO L82 PathProgramCache]: Analyzing trace with hash 752263732, now seen corresponding path program 1 times [2020-09-25 05:35:05,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:05,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698589213] [2020-09-25 05:35:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:05,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 05:35:10,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:35:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:35:10,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:10,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 05:35:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 05:35:10,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:35:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:11,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:11,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:11,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:11,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:11,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:11,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:11,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:11,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:11,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:11,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:11,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:11,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 05:35:11,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:11,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:35:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:11,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698589213] [2020-09-25 05:35:11,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:11,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:11,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409408951] [2020-09-25 05:35:11,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:11,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:11,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:11,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:11,124 INFO L87 Difference]: Start difference. First operand 1177 states and 1466 transitions. Second operand 5 states. [2020-09-25 05:35:13,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:13,007 INFO L93 Difference]: Finished difference Result 2982 states and 3833 transitions. [2020-09-25 05:35:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:13,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 05:35:13,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:13,025 INFO L225 Difference]: With dead ends: 2982 [2020-09-25 05:35:13,025 INFO L226 Difference]: Without dead ends: 1829 [2020-09-25 05:35:13,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-09-25 05:35:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1463. [2020-09-25 05:35:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-09-25 05:35:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 1883 transitions. [2020-09-25 05:35:13,103 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 1883 transitions. Word has length 135 [2020-09-25 05:35:13,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:13,104 INFO L479 AbstractCegarLoop]: Abstraction has 1463 states and 1883 transitions. [2020-09-25 05:35:13,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 1883 transitions. [2020-09-25 05:35:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 05:35:13,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:13,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:13,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:13,114 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:13,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1060590272, now seen corresponding path program 1 times [2020-09-25 05:35:13,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:13,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116483816] [2020-09-25 05:35:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:15,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:18,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 05:35:18,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:35:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 05:35:18,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:18,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 05:35:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 05:35:18,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:18,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:18,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:18,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:35:18,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:18,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:18,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:18,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:18,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:18,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:18,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:18,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:35:18,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 05:35:18,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:18,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:35:18,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:18,449 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:18,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116483816] [2020-09-25 05:35:18,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:18,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:18,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909541417] [2020-09-25 05:35:18,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:18,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:18,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:18,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:18,452 INFO L87 Difference]: Start difference. First operand 1463 states and 1883 transitions. Second operand 5 states. [2020-09-25 05:35:20,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:20,044 INFO L93 Difference]: Finished difference Result 3789 states and 5075 transitions. [2020-09-25 05:35:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:20,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 05:35:20,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:20,058 INFO L225 Difference]: With dead ends: 3789 [2020-09-25 05:35:20,058 INFO L226 Difference]: Without dead ends: 2350 [2020-09-25 05:35:20,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2020-09-25 05:35:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 1751. [2020-09-25 05:35:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2020-09-25 05:35:20,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2244 transitions. [2020-09-25 05:35:20,132 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2244 transitions. Word has length 141 [2020-09-25 05:35:20,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:20,132 INFO L479 AbstractCegarLoop]: Abstraction has 1751 states and 2244 transitions. [2020-09-25 05:35:20,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2244 transitions. [2020-09-25 05:35:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 05:35:20,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:20,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:20,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:20,143 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:20,143 INFO L82 PathProgramCache]: Analyzing trace with hash -620063423, now seen corresponding path program 1 times [2020-09-25 05:35:20,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:20,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015338833] [2020-09-25 05:35:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:20,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:24,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:25,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 05:35:25,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:35:25,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:35:25,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:25,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 05:35:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 05:35:25,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:25,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:25,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:25,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:25,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:25,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:25,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 05:35:25,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:35:25,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:25,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:35:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:25,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015338833] [2020-09-25 05:35:25,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:25,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:25,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749056405] [2020-09-25 05:35:25,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:25,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:25,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:25,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:25,428 INFO L87 Difference]: Start difference. First operand 1751 states and 2244 transitions. Second operand 5 states. [2020-09-25 05:35:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:27,268 INFO L93 Difference]: Finished difference Result 4369 states and 5771 transitions. [2020-09-25 05:35:27,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:27,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 05:35:27,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:27,283 INFO L225 Difference]: With dead ends: 4369 [2020-09-25 05:35:27,284 INFO L226 Difference]: Without dead ends: 2642 [2020-09-25 05:35:27,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2020-09-25 05:35:27,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2466. [2020-09-25 05:35:27,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2020-09-25 05:35:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3104 transitions. [2020-09-25 05:35:27,363 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3104 transitions. Word has length 147 [2020-09-25 05:35:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:27,364 INFO L479 AbstractCegarLoop]: Abstraction has 2466 states and 3104 transitions. [2020-09-25 05:35:27,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3104 transitions. [2020-09-25 05:35:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:35:27,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:27,376 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:27,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:35:27,376 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:27,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:27,376 INFO L82 PathProgramCache]: Analyzing trace with hash -588171755, now seen corresponding path program 1 times [2020-09-25 05:35:27,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:27,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978547224] [2020-09-25 05:35:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:27,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:28,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 05:35:28,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:35:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-09-25 05:35:28,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:28,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:35:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:35:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:29,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:29,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:29,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:35:29,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:29,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:29,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:29,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:29,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:35:29,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:29,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:29,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:29,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:35:29,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:29,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:35:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:29,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:29,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 05:35:29,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 05:35:29,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:29,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 05:35:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:35:29,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978547224] [2020-09-25 05:35:29,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:29,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:35:29,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399039067] [2020-09-25 05:35:29,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:35:29,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:29,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:35:29,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:29,327 INFO L87 Difference]: Start difference. First operand 2466 states and 3104 transitions. Second operand 7 states.