/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem10_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:04,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:04,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:05,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:05,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:05,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:05,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:05,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:05,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:05,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:05,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:05,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:05,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:05,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:05,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:05,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:05,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:05,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:05,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:05,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:05,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:05,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:05,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:05,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:05,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:05,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:05,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:05,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:05,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:05,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:05,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:05,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:05,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:05,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:05,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:05,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:05,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:05,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:05,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:05,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:05,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:05,049 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 12:27:05,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:05,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:05,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:05,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:05,076 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:05,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:05,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:05,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:05,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:05,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:05,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:05,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:05,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:05,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:05,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:05,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:05,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:05,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:05,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:05,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:05,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:05,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:05,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:05,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:05,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:05,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:05,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:05,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:05,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:05,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:27:05,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:05,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:05,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:05,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:05,570 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:05,572 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 12:27:05,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a53ec1b21/f2528b50a7fb44fab60a739f9864e1e7/FLAG26e32f5c4 [2020-09-25 12:27:06,352 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:06,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 12:27:06,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a53ec1b21/f2528b50a7fb44fab60a739f9864e1e7/FLAG26e32f5c4 [2020-09-25 12:27:06,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a53ec1b21/f2528b50a7fb44fab60a739f9864e1e7 [2020-09-25 12:27:06,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:06,608 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:06,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:06,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:06,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:06,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:06" (1/1) ... [2020-09-25 12:27:06,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfcebea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:06, skipping insertion in model container [2020-09-25 12:27:06,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:06" (1/1) ... [2020-09-25 12:27:06,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:06,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:07,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:07,252 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:07,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:07,492 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:07,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07 WrapperNode [2020-09-25 12:27:07,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:07,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:07,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:07,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:07,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07" (1/1) ... [2020-09-25 12:27:07,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07" (1/1) ... [2020-09-25 12:27:07,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07" (1/1) ... [2020-09-25 12:27:07,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07" (1/1) ... [2020-09-25 12:27:07,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07" (1/1) ... [2020-09-25 12:27:07,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07" (1/1) ... [2020-09-25 12:27:07,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07" (1/1) ... [2020-09-25 12:27:07,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:07,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:07,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:07,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:07,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07" (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 12:27:07,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:09,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:09,279 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:09,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:09 BoogieIcfgContainer [2020-09-25 12:27:09,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:09,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:09,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:09,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:09,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:06" (1/3) ... [2020-09-25 12:27:09,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7924266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:09, skipping insertion in model container [2020-09-25 12:27:09,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07" (2/3) ... [2020-09-25 12:27:09,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7924266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:09, skipping insertion in model container [2020-09-25 12:27:09,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:09" (3/3) ... [2020-09-25 12:27:09,298 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-25 12:27:09,310 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:09,322 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:09,345 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:09,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:09,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:09,380 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:09,380 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:09,380 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:09,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:09,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:09,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:09,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 12:27:09,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:09,426 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] [2020-09-25 12:27:09,426 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:09,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:09,435 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-25 12:27:09,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:09,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507529445] [2020-09-25 12:27:09,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:09,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:27:10,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-09-25 12:27:10,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:27:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:11,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:11,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:11,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:11,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:27:11,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:11,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:11,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:11,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:11,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:11,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:11,081 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 12:27:11,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507529445] [2020-09-25 12:27:11,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:11,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:27:11,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953559604] [2020-09-25 12:27:11,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:11,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:11,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:11,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:11,116 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 12:27:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:13,770 INFO L93 Difference]: Finished difference Result 1226 states and 1798 transitions. [2020-09-25 12:27:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:27:13,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 12:27:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:13,799 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 12:27:13,799 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 12:27:13,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 12:27:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 12:27:13,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 12:27:13,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 902 transitions. [2020-09-25 12:27:13,933 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 902 transitions. Word has length 73 [2020-09-25 12:27:13,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:13,934 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 902 transitions. [2020-09-25 12:27:13,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 902 transitions. [2020-09-25 12:27:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 12:27:13,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:13,945 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:13,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:13,945 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:13,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-25 12:27:13,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:13,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031456954] [2020-09-25 12:27:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:14,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:16,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:16,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 12:27:19,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:19,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 12:27:19,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 12:27:19,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:19,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:27:19,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:19,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:19,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:19,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 12:27:19,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:19,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031456954] [2020-09-25 12:27:19,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:19,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:19,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675841000] [2020-09-25 12:27:19,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:19,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:19,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:19,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:19,645 INFO L87 Difference]: Start difference. First operand 695 states and 902 transitions. Second operand 8 states. [2020-09-25 12:27:22,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:22,699 INFO L93 Difference]: Finished difference Result 2492 states and 3498 transitions. [2020-09-25 12:27:22,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:22,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 12:27:22,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:22,718 INFO L225 Difference]: With dead ends: 2492 [2020-09-25 12:27:22,718 INFO L226 Difference]: Without dead ends: 1812 [2020-09-25 12:27:22,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:27:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-25 12:27:22,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1517. [2020-09-25 12:27:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2020-09-25 12:27:22,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2050 transitions. [2020-09-25 12:27:22,805 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2050 transitions. Word has length 162 [2020-09-25 12:27:22,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:22,806 INFO L479 AbstractCegarLoop]: Abstraction has 1517 states and 2050 transitions. [2020-09-25 12:27:22,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:22,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2050 transitions. [2020-09-25 12:27:22,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 12:27:22,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:22,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:22,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:22,814 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:22,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:22,814 INFO L82 PathProgramCache]: Analyzing trace with hash -594506206, now seen corresponding path program 1 times [2020-09-25 12:27:22,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:22,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064873859] [2020-09-25 12:27:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:27,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 12:27:27,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:27:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:27:27,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:27,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 12:27:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:27,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:27,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:27,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:27:27,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:27,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:27,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:28,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:28,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:28,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:27:28,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:28,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 12:27:28,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:28,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:27:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:28,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064873859] [2020-09-25 12:27:28,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:28,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:28,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211379361] [2020-09-25 12:27:28,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:28,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:28,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:28,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:28,298 INFO L87 Difference]: Start difference. First operand 1517 states and 2050 transitions. Second operand 7 states. [2020-09-25 12:27:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:30,584 INFO L93 Difference]: Finished difference Result 4045 states and 5740 transitions. [2020-09-25 12:27:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:27:30,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-25 12:27:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:30,601 INFO L225 Difference]: With dead ends: 4045 [2020-09-25 12:27:30,602 INFO L226 Difference]: Without dead ends: 2543 [2020-09-25 12:27:30,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:27:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2020-09-25 12:27:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2305. [2020-09-25 12:27:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-25 12:27:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 2986 transitions. [2020-09-25 12:27:30,708 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 2986 transitions. Word has length 165 [2020-09-25 12:27:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:30,709 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 2986 transitions. [2020-09-25 12:27:30,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:30,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 2986 transitions. [2020-09-25 12:27:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 12:27:30,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:30,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:30,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:30,717 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:30,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:30,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1477622191, now seen corresponding path program 1 times [2020-09-25 12:27:30,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:30,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617009284] [2020-09-25 12:27:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:30,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:30,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:32,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:35,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:35,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 12:27:35,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:27:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:27:35,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:35,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:27:35,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:35,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:35,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:35,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:35,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:27:35,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:35,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:35,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:35,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:35,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:36,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:36,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:36,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:36,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 12:27:36,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:36,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:27:36,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:27:36,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:36,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:36,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:36,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:36,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 12:27:36,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:36,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:36,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:36,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:36,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 124 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:36,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617009284] [2020-09-25 12:27:36,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:36,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:27:36,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608612060] [2020-09-25 12:27:36,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:27:36,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:36,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:27:36,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:36,472 INFO L87 Difference]: Start difference. First operand 2305 states and 2986 transitions. Second operand 10 states. [2020-09-25 12:27:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:40,910 INFO L93 Difference]: Finished difference Result 6373 states and 9194 transitions. [2020-09-25 12:27:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:27:40,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 241 [2020-09-25 12:27:40,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:40,942 INFO L225 Difference]: With dead ends: 6373 [2020-09-25 12:27:40,942 INFO L226 Difference]: Without dead ends: 4083 [2020-09-25 12:27:40,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:27:40,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2020-09-25 12:27:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 3480. [2020-09-25 12:27:41,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3480 states. [2020-09-25 12:27:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 4562 transitions. [2020-09-25 12:27:41,096 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 4562 transitions. Word has length 241 [2020-09-25 12:27:41,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:41,097 INFO L479 AbstractCegarLoop]: Abstraction has 3480 states and 4562 transitions. [2020-09-25 12:27:41,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:27:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 4562 transitions. [2020-09-25 12:27:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 12:27:41,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:41,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:41,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:41,106 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:41,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:41,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1248338468, now seen corresponding path program 1 times [2020-09-25 12:27:41,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:41,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644590060] [2020-09-25 12:27:41,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:41,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:46,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 12:27:46,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:27:46,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:46,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:27:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 12:27:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:46,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:46,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:46,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:46,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:46,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:27:46,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:46,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:27:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:46,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:46,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:46,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:46,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 12:27:46,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:46,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:27:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:46,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:27:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:46,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:46,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:46,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 12:27:46,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:46,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:27:46,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 12:27:47,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644590060] [2020-09-25 12:27:47,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:47,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:27:47,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968425953] [2020-09-25 12:27:47,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:27:47,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:47,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:27:47,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:27:47,174 INFO L87 Difference]: Start difference. First operand 3480 states and 4562 transitions. Second operand 9 states. [2020-09-25 12:27:50,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:50,726 INFO L93 Difference]: Finished difference Result 7934 states and 10780 transitions. [2020-09-25 12:27:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:27:50,727 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 245 [2020-09-25 12:27:50,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:50,750 INFO L225 Difference]: With dead ends: 7934 [2020-09-25 12:27:50,750 INFO L226 Difference]: Without dead ends: 4581 [2020-09-25 12:27:50,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:27:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2020-09-25 12:27:50,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 4233. [2020-09-25 12:27:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4233 states. [2020-09-25 12:27:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4233 states to 4233 states and 5460 transitions. [2020-09-25 12:27:50,899 INFO L78 Accepts]: Start accepts. Automaton has 4233 states and 5460 transitions. Word has length 245 [2020-09-25 12:27:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:50,900 INFO L479 AbstractCegarLoop]: Abstraction has 4233 states and 5460 transitions. [2020-09-25 12:27:50,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:27:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4233 states and 5460 transitions. [2020-09-25 12:27:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 12:27:50,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:50,910 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:50,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:27:50,910 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:50,910 INFO L82 PathProgramCache]: Analyzing trace with hash -829864162, now seen corresponding path program 1 times [2020-09-25 12:27:50,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:50,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845045209] [2020-09-25 12:27:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:50,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking...