/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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:33:30,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:33:30,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:33:30,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:33:30,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:33:30,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:33:30,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:33:30,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:33:30,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:33:30,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:33:31,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:33:31,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:33:31,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:33:31,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:33:31,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:33:31,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:33:31,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:33:31,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:33:31,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:33:31,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:33:31,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:33:31,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:33:31,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:33:31,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:33:31,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:33:31,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:33:31,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:33:31,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:33:31,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:33:31,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:33:31,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:33:31,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:33:31,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:33:31,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:33:31,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:33:31,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:33:31,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:33:31,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:33:31,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:33:31,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:33:31,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:33:31,036 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 05:33:31,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:33:31,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:33:31,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:33:31,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:33:31,077 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:33:31,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:33:31,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:33:31,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:33:31,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:33:31,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:33:31,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:33:31,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:33:31,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:33:31,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:33:31,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:33:31,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:33:31,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:33:31,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:33:31,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:33:31,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:33:31,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:33:31,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:31,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:33:31,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:33:31,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:33:31,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:33:31,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:33:31,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:33:31,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:33:31,084 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 05:33:31,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:33:31,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:33:31,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:33:31,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:33:31,547 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:33:31,548 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 05:33:31,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4edfc1ee3/ebae5c83096f48088361583d44b4c2ce/FLAG605d4c328 [2020-09-25 05:33:32,269 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:33:32,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 05:33:32,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4edfc1ee3/ebae5c83096f48088361583d44b4c2ce/FLAG605d4c328 [2020-09-25 05:33:32,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4edfc1ee3/ebae5c83096f48088361583d44b4c2ce [2020-09-25 05:33:32,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:33:32,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:33:32,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:32,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:33:32,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:33:32,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674884e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32, skipping insertion in model container [2020-09-25 05:33:32,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:33:32,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:33:33,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:33,168 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:33:33,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:33,401 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:33:33,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:33 WrapperNode [2020-09-25 05:33:33,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:33,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:33:33,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:33:33,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:33:33,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:33" (1/1) ... [2020-09-25 05:33:33,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:33" (1/1) ... [2020-09-25 05:33:33,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:33" (1/1) ... [2020-09-25 05:33:33,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:33" (1/1) ... [2020-09-25 05:33:33,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:33" (1/1) ... [2020-09-25 05:33:33,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:33" (1/1) ... [2020-09-25 05:33:33,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:33" (1/1) ... [2020-09-25 05:33:33,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:33:33,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:33:33,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:33:33,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:33:33,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:33" (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 05:33:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:33:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:33:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:33:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:33:33,620 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:33:33,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:33:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:33:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:33:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:33:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:33:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:33:35,073 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:33:35,073 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:33:35,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:35 BoogieIcfgContainer [2020-09-25 05:33:35,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:33:35,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:33:35,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:33:35,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:33:35,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:33:32" (1/3) ... [2020-09-25 05:33:35,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:35, skipping insertion in model container [2020-09-25 05:33:35,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:33" (2/3) ... [2020-09-25 05:33:35,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:35, skipping insertion in model container [2020-09-25 05:33:35,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:35" (3/3) ... [2020-09-25 05:33:35,094 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2020-09-25 05:33:35,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:33:35,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:33:35,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:33:35,182 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:33:35,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:33:35,183 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:33:35,183 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:33:35,183 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:33:35,183 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:33:35,183 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:33:35,184 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:33:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:33:35,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 05:33:35,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:35,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:35,241 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:35,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:35,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1844135333, now seen corresponding path program 1 times [2020-09-25 05:33:35,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:35,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597125458] [2020-09-25 05:33:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:35,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:40,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:40,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 05:33:40,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:33:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 05:33:40,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:40,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:40,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:33:40,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 05:33:40,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:33:40,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:40,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:40,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:40,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:33:40,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:40,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:33:40,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:40,999 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 05:33:41,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597125458] [2020-09-25 05:33:41,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:41,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:33:41,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113393957] [2020-09-25 05:33:41,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:33:41,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:41,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:33:41,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:33:41,039 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:33:43,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:43,254 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 05:33:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:33:43,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 05:33:43,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:43,281 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 05:33:43,282 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 05:33:43,293 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 05:33:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 05:33:43,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 05:33:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:33:43,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:33:43,404 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 155 [2020-09-25 05:33:43,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:43,405 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:33:43,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:33:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:33:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 05:33:43,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:43,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:43,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:43,422 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:43,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:43,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1778459773, now seen corresponding path program 1 times [2020-09-25 05:33:43,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:43,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307043484] [2020-09-25 05:33:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:47,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:48,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:48,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 05:33:48,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:33:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:33:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:48,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:33:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:33:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:48,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:48,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:48,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:33:48,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:48,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:33:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:48,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:48,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:48,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:48,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:33:48,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:48,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:48,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:48,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:48,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:33:48,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:48,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307043484] [2020-09-25 05:33:48,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:48,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:33:48,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870586903] [2020-09-25 05:33:48,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:48,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:48,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:48,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:48,748 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 05:33:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:51,290 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 05:33:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:33:51,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 05:33:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:51,301 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 05:33:51,301 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 05:33:51,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 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 05:33:51,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 05:33:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 05:33:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 05:33:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1174 transitions. [2020-09-25 05:33:51,368 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1174 transitions. Word has length 176 [2020-09-25 05:33:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:51,368 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1174 transitions. [2020-09-25 05:33:51,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:33:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1174 transitions. [2020-09-25 05:33:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 05:33:51,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:51,374 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:51,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:33:51,374 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:51,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:51,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1702754775, now seen corresponding path program 1 times [2020-09-25 05:33:51,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:51,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879854172] [2020-09-25 05:33:51,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:52,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:52,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:56,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 05:33:56,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:33:56,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:33:56,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:56,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:33:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:33:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:56,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:56,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:56,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:56,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:33:56,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:56,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:56,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:56,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:33:56,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 05:33:56,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:56,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:56,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:56,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:33:56,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:56,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879854172] [2020-09-25 05:33:56,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:56,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:33:56,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962524480] [2020-09-25 05:33:56,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:56,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:56,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:56,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:56,688 INFO L87 Difference]: Start difference. First operand 966 states and 1174 transitions. Second operand 7 states. [2020-09-25 05:33:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:59,205 INFO L93 Difference]: Finished difference Result 2756 states and 3517 transitions. [2020-09-25 05:33:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:33:59,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-09-25 05:33:59,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:59,218 INFO L225 Difference]: With dead ends: 2756 [2020-09-25 05:33:59,218 INFO L226 Difference]: Without dead ends: 1814 [2020-09-25 05:33:59,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:33:59,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-09-25 05:33:59,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1683. [2020-09-25 05:33:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1683 states. [2020-09-25 05:33:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2059 transitions. [2020-09-25 05:33:59,318 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2059 transitions. Word has length 177 [2020-09-25 05:33:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:59,320 INFO L479 AbstractCegarLoop]: Abstraction has 1683 states and 2059 transitions. [2020-09-25 05:33:59,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:33:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2059 transitions. [2020-09-25 05:33:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 05:33:59,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:59,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:59,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:33:59,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:59,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:59,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1433668401, now seen corresponding path program 1 times [2020-09-25 05:33:59,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:59,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013270695] [2020-09-25 05:33:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:00,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:04,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:04,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 05:34:04,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:04,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 05:34:04,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:04,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:34:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:34:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:04,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:04,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:04,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:04,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:04,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:04,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:34:04,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:04,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:04,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:04,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:04,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:04,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:04,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:04,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:04,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:04,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:04,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:34:04,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:04,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:04,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:34:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:34:04,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:04,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:04,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:04,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 05:34:04,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:04,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:04,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:34:04,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:04,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013270695] [2020-09-25 05:34:04,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:04,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:04,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544088570] [2020-09-25 05:34:04,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:04,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:04,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:04,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:04,982 INFO L87 Difference]: Start difference. First operand 1683 states and 2059 transitions. Second operand 7 states. [2020-09-25 05:34:07,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:07,091 INFO L93 Difference]: Finished difference Result 3827 states and 4783 transitions. [2020-09-25 05:34:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:34:07,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-09-25 05:34:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:07,102 INFO L225 Difference]: With dead ends: 3827 [2020-09-25 05:34:07,102 INFO L226 Difference]: Without dead ends: 2168 [2020-09-25 05:34:07,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:34:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2020-09-25 05:34:07,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2118. [2020-09-25 05:34:07,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2118 states. [2020-09-25 05:34:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2587 transitions. [2020-09-25 05:34:07,177 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2587 transitions. Word has length 207 [2020-09-25 05:34:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:07,177 INFO L479 AbstractCegarLoop]: Abstraction has 2118 states and 2587 transitions. [2020-09-25 05:34:07,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2587 transitions. [2020-09-25 05:34:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 05:34:07,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:07,189 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:07,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:07,189 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash 936057003, now seen corresponding path program 1 times [2020-09-25 05:34:07,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:07,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948896309] [2020-09-25 05:34:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:11,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:12,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 05:34:12,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:12,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:34:12,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:12,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 05:34:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:34:12,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:12,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:12,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:12,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:12,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:12,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:12,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:12,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:12,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:12,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:12,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:12,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:12,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:34:12,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:12,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:12,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:12,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:12,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:12,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:12,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:12,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:34:12,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:12,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:12,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:12,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:12,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:34:12,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:12,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 05:34:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:12,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:12,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:12,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 05:34:12,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:12,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:34:12,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948896309] [2020-09-25 05:34:12,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:12,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:12,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501976111] [2020-09-25 05:34:12,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:12,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:12,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:12,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:12,601 INFO L87 Difference]: Start difference. First operand 2118 states and 2587 transitions. Second operand 7 states. [2020-09-25 05:34:15,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:15,017 INFO L93 Difference]: Finished difference Result 5532 states and 6919 transitions. [2020-09-25 05:34:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:15,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-25 05:34:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:15,040 INFO L225 Difference]: With dead ends: 5532 [2020-09-25 05:34:15,040 INFO L226 Difference]: Without dead ends: 3438 [2020-09-25 05:34:15,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2020-09-25 05:34:15,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 2700. [2020-09-25 05:34:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2700 states. [2020-09-25 05:34:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3373 transitions. [2020-09-25 05:34:15,136 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3373 transitions. Word has length 214 [2020-09-25 05:34:15,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:15,137 INFO L479 AbstractCegarLoop]: Abstraction has 2700 states and 3373 transitions. [2020-09-25 05:34:15,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:15,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3373 transitions. [2020-09-25 05:34:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-09-25 05:34:15,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:15,152 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:15,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:15,152 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:15,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:15,153 INFO L82 PathProgramCache]: Analyzing trace with hash 134521756, now seen corresponding path program 1 times [2020-09-25 05:34:15,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:15,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109177426] [2020-09-25 05:34:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:15,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:20,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:20,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-09-25 05:34:20,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:20,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:34:20,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:20,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 05:34:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 05:34:20,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0