/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/Problem02_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:56,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:56,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:57,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:57,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:57,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:57,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:57,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:57,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:57,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:57,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:57,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:57,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:57,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:57,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:57,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:57,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:57,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:57,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:57,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:57,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:57,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:57,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:57,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:57,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:57,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:57,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:57,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:57,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:57,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:57,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:57,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:57,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:57,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:57,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:57,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:57,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:57,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:57,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:57,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:57,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:57,084 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 05:34:57,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:57,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:57,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:57,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:57,110 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:57,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:57,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:57,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:57,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:57,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:57,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:57,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:57,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:57,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:57,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:57,113 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:57,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:57,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:57,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:57,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:57,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:57,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:57,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:57,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:57,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:57,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:57,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:57,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:57,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:57,116 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 05:34:57,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:57,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:57,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:57,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:57,596 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:57,597 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 05:34:57,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fb9b851b/c554c4dbf707421da575251e0cc825c8/FLAG1de261249 [2020-09-25 05:34:58,372 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:58,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 05:34:58,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fb9b851b/c554c4dbf707421da575251e0cc825c8/FLAG1de261249 [2020-09-25 05:34:58,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fb9b851b/c554c4dbf707421da575251e0cc825c8 [2020-09-25 05:34:58,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:58,622 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:58,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:58,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:58,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:58,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:58" (1/1) ... [2020-09-25 05:34:58,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:58, skipping insertion in model container [2020-09-25 05:34:58,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:58" (1/1) ... [2020-09-25 05:34:58,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:58,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:59,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:59,165 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:59,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:59,424 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:59,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:59 WrapperNode [2020-09-25 05:34:59,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:59,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:59,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:59,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:59,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:59" (1/1) ... [2020-09-25 05:34:59,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:59" (1/1) ... [2020-09-25 05:34:59,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:59" (1/1) ... [2020-09-25 05:34:59,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:59" (1/1) ... [2020-09-25 05:34:59,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:59" (1/1) ... [2020-09-25 05:34:59,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:59" (1/1) ... [2020-09-25 05:34:59,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:59" (1/1) ... [2020-09-25 05:34:59,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:59,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:59,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:59,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:59,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:59" (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 05:34:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:59,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:59,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:35:00,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:35:00,983 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:35:01,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:01 BoogieIcfgContainer [2020-09-25 05:35:01,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:35:01,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:35:01,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:35:01,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:35:01,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:58" (1/3) ... [2020-09-25 05:35:01,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:01, skipping insertion in model container [2020-09-25 05:35:01,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:59" (2/3) ... [2020-09-25 05:35:01,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:01, skipping insertion in model container [2020-09-25 05:35:01,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:01" (3/3) ... [2020-09-25 05:35:01,015 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2020-09-25 05:35:01,028 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:35:01,043 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:35:01,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:35:01,095 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:35:01,095 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:35:01,095 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:35:01,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:35:01,096 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:35:01,096 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:35:01,096 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:35:01,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:35:01,131 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:35:01,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 05:35:01,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:01,155 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] [2020-09-25 05:35:01,155 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:01,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:01,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1323495626, now seen corresponding path program 1 times [2020-09-25 05:35:01,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:01,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829968196] [2020-09-25 05:35:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 05:35:06,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:35:06,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 05:35:06,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:35:06,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:35:06,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:35:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:06,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 05:35:06,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:35:06,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:06,902 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 05:35:06,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829968196] [2020-09-25 05:35:06,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:06,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:35:06,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911524996] [2020-09-25 05:35:06,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:35:06,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:06,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:35:06,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:35:06,937 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:35:09,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:09,112 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 05:35:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:35:09,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 05:35:09,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:09,162 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 05:35:09,162 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 05:35:09,172 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 05:35:09,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 05:35:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 05:35:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 05:35:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 05:35:09,291 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 141 [2020-09-25 05:35:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:09,292 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 05:35:09,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:35:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 05:35:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 05:35:09,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:09,302 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:35:09,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:35:09,303 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:09,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:09,304 INFO L82 PathProgramCache]: Analyzing trace with hash -427811082, now seen corresponding path program 1 times [2020-09-25 05:35:09,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:09,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857473032] [2020-09-25 05:35:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:09,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:12,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:12,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:14,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:14,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 05:35:14,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:35:14,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 05:35:14,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:14,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:14,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:14,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:35:14,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 05:35:14,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:14,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:14,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:14,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:14,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:35:14,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:14,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:14,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:14,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:14,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:14,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 05:35:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:14,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:14,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:14,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:35:14,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:14,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:35:14,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:14,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:35:14,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:14,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857473032] [2020-09-25 05:35:14,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:14,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:35:14,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98172136] [2020-09-25 05:35:14,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:35:14,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:14,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:35:14,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:14,704 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 05:35:16,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:16,828 INFO L93 Difference]: Finished difference Result 1753 states and 2210 transitions. [2020-09-25 05:35:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:16,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-09-25 05:35:16,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:16,837 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 05:35:16,837 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 05:35:16,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:16,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 05:35:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 05:35:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 05:35:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 05:35:16,892 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 159 [2020-09-25 05:35:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:16,893 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 05:35:16,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:35:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 05:35:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 05:35:16,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:16,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:16,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:35:16,901 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:16,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:16,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1927343599, now seen corresponding path program 1 times [2020-09-25 05:35:16,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:16,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656531186] [2020-09-25 05:35:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:21,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 05:35:21,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:35:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 05:35:21,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:21,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:21,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 05:35:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 05:35:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:35:22,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:22,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:22,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:22,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:35:22,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:22,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:22,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:35:22,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:22,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:35:22,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:22,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:35:22,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:22,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656531186] [2020-09-25 05:35:22,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:22,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:22,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576062268] [2020-09-25 05:35:22,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:22,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:22,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:22,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:22,319 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 5 states. [2020-09-25 05:35:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:24,519 INFO L93 Difference]: Finished difference Result 2239 states and 2968 transitions. [2020-09-25 05:35:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:24,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 05:35:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:24,531 INFO L225 Difference]: With dead ends: 2239 [2020-09-25 05:35:24,532 INFO L226 Difference]: Without dead ends: 1380 [2020-09-25 05:35:24,537 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 05:35:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-09-25 05:35:24,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1341. [2020-09-25 05:35:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-09-25 05:35:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1640 transitions. [2020-09-25 05:35:24,598 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1640 transitions. Word has length 175 [2020-09-25 05:35:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:24,599 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1640 transitions. [2020-09-25 05:35:24,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:24,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1640 transitions. [2020-09-25 05:35:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 05:35:24,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:24,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:24,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:35:24,609 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:24,610 INFO L82 PathProgramCache]: Analyzing trace with hash 482825858, now seen corresponding path program 1 times [2020-09-25 05:35:24,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:24,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821778863] [2020-09-25 05:35:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:24,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:24,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:26,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:29,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 05:35:29,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:35:29,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:35:29,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:29,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:29,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:29,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 05:35:29,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 05:35:29,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:29,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:29,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:29,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:35:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:35:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:29,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:35:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:29,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821778863] [2020-09-25 05:35:29,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:29,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:29,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70475515] [2020-09-25 05:35:29,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:29,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:29,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:29,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:29,928 INFO L87 Difference]: Start difference. First operand 1341 states and 1640 transitions. Second operand 5 states. [2020-09-25 05:35:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:31,952 INFO L93 Difference]: Finished difference Result 3580 states and 4555 transitions. [2020-09-25 05:35:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:31,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 05:35:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:31,971 INFO L225 Difference]: With dead ends: 3580 [2020-09-25 05:35:31,972 INFO L226 Difference]: Without dead ends: 2261 [2020-09-25 05:35:31,978 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 05:35:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-09-25 05:35:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1970. [2020-09-25 05:35:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1970 states. [2020-09-25 05:35:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2486 transitions. [2020-09-25 05:35:32,059 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2486 transitions. Word has length 179 [2020-09-25 05:35:32,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:32,059 INFO L479 AbstractCegarLoop]: Abstraction has 1970 states and 2486 transitions. [2020-09-25 05:35:32,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2486 transitions. [2020-09-25 05:35:32,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 05:35:32,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:32,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:32,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:32,072 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:32,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:32,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1193444011, now seen corresponding path program 1 times [2020-09-25 05:35:32,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:32,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930665300] [2020-09-25 05:35:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:34,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:35,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:37,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 05:35:37,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:35:37,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:35:37,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:37,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-25 05:35:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 05:35:37,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:37,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:37,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:37,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:37,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:37,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:35:37,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:37,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:37,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:37,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:37,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:37,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:35:37,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:37,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:35:37,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:37,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:37,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 05:35:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:37,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 05:35:37,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 05:35:37,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:37,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 05:35:37,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 05:35:37,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930665300] [2020-09-25 05:35:37,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:37,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:37,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021630803] [2020-09-25 05:35:37,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:37,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:37,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:37,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:37,490 INFO L87 Difference]: Start difference. First operand 1970 states and 2486 transitions. Second operand 5 states. [2020-09-25 05:35:39,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:39,690 INFO L93 Difference]: Finished difference Result 4746 states and 6292 transitions. [2020-09-25 05:35:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:39,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-09-25 05:35:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:39,713 INFO L225 Difference]: With dead ends: 4746 [2020-09-25 05:35:39,713 INFO L226 Difference]: Without dead ends: 2798 [2020-09-25 05:35:39,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 05:35:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2020-09-25 05:35:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2728. [2020-09-25 05:35:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2728 states. [2020-09-25 05:35:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 3373 transitions. [2020-09-25 05:35:39,823 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 3373 transitions. Word has length 250 [2020-09-25 05:35:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:39,824 INFO L479 AbstractCegarLoop]: Abstraction has 2728 states and 3373 transitions. [2020-09-25 05:35:39,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 3373 transitions. [2020-09-25 05:35:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 05:35:39,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:39,838 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:39,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:39,839 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:39,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1124802478, now seen corresponding path program 1 times [2020-09-25 05:35:39,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:39,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751798062] [2020-09-25 05:35:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:41,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:44,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 05:35:44,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:35:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:35:44,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:44,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-25 05:35:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 05:35:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:45,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:45,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:45,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:45,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:45,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:35:45,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:45,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:45,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:45,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:45,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:45,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:45,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:45,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:35:45,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:35:45,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:45,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 05:35:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:45,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:45,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:45,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 05:35:45,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 05:35:45,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:45,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:35:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 05:35:45,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751798062] [2020-09-25 05:35:45,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:45,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:45,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857618694] [2020-09-25 05:35:45,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:45,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:45,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:45,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:45,181 INFO L87 Difference]: Start difference. First operand 2728 states and 3373 transitions. Second operand 5 states. [2020-09-25 05:35:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:47,456 INFO L93 Difference]: Finished difference Result 6176 states and 7888 transitions. [2020-09-25 05:35:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:47,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-09-25 05:35:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:47,457 INFO L225 Difference]: With dead ends: 6176 [2020-09-25 05:35:47,458 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:35:47,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 05:35:47,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:35:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:35:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:35:47,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:35:47,475 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 253 [2020-09-25 05:35:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:47,476 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:35:47,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:47,476 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:35:47,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:35:47,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:35:47,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.