/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:07,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:07,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:07,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:07,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:07,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:07,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:07,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:07,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:07,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:07,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:07,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:07,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:07,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:07,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:07,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:07,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:07,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:07,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:07,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:07,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:07,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:07,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:07,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:07,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:07,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:07,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:07,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:07,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:07,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:07,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:07,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:07,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:07,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:07,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:07,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:07,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:07,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:07,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:07,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:07,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:07,438 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 05:34:07,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:07,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:07,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:07,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:07,465 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:07,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:07,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:07,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:07,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:07,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:07,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:07,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:07,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:07,467 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:07,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:07,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:07,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:07,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:07,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:07,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:07,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:07,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:07,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:07,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:07,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:07,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:07,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:07,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:07,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:07,470 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 05:34:07,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:07,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:07,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:07,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:07,990 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:07,992 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 05:34:08,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5b8b5830/48123e02479a4535a93bf9a74a9382c3/FLAG482a0dbfb [2020-09-25 05:34:08,809 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:08,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 05:34:08,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5b8b5830/48123e02479a4535a93bf9a74a9382c3/FLAG482a0dbfb [2020-09-25 05:34:09,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5b8b5830/48123e02479a4535a93bf9a74a9382c3 [2020-09-25 05:34:09,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:09,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:09,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:09,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:09,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:09,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:09" (1/1) ... [2020-09-25 05:34:09,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d9ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09, skipping insertion in model container [2020-09-25 05:34:09,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:09" (1/1) ... [2020-09-25 05:34:09,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:09,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:09,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:09,619 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:09,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:09,851 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:09,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09 WrapperNode [2020-09-25 05:34:09,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:09,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:09,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:09,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:09,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09" (1/1) ... [2020-09-25 05:34:09,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09" (1/1) ... [2020-09-25 05:34:09,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09" (1/1) ... [2020-09-25 05:34:09,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09" (1/1) ... [2020-09-25 05:34:09,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09" (1/1) ... [2020-09-25 05:34:09,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09" (1/1) ... [2020-09-25 05:34:09,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09" (1/1) ... [2020-09-25 05:34:09,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:09,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:09,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:09,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:09,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09" (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 05:34:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:11,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:11,425 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:11,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:11 BoogieIcfgContainer [2020-09-25 05:34:11,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:11,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:11,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:11,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:11,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:09" (1/3) ... [2020-09-25 05:34:11,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2369b57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:11, skipping insertion in model container [2020-09-25 05:34:11,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:09" (2/3) ... [2020-09-25 05:34:11,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2369b57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:11, skipping insertion in model container [2020-09-25 05:34:11,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:11" (3/3) ... [2020-09-25 05:34:11,445 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-09-25 05:34:11,458 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:11,471 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:11,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:11,535 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:11,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:11,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:11,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:11,536 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:11,536 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:11,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:11,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 05:34:11,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:11,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:11,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2068005297, now seen corresponding path program 1 times [2020-09-25 05:34:11,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:11,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5545876] [2020-09-25 05:34:11,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:12,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:16,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:16,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 05:34:16,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:16,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 05:34:16,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:16,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 05:34:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 05:34:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:17,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:17,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:17,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:17,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 05:34:17,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:17,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:34:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:17,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5545876] [2020-09-25 05:34:17,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:17,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:34:17,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458416866] [2020-09-25 05:34:17,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:34:17,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:17,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:34:17,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:34:17,415 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:34:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:19,544 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 05:34:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:19,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 05:34:19,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:19,571 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 05:34:19,571 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 05:34:19,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:19,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 05:34:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 05:34:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:34:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:34:19,724 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 160 [2020-09-25 05:34:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:19,727 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:34:19,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:34:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:34:19,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:34:19,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:19,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:19,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:19,746 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:19,747 INFO L82 PathProgramCache]: Analyzing trace with hash 305686135, now seen corresponding path program 1 times [2020-09-25 05:34:19,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:19,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762717458] [2020-09-25 05:34:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:20,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:24,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:24,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 05:34:24,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:34:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:34:24,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:24,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:34:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:34:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:24,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:24,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:24,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:24,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:24,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:34:24,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:24,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:24,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:25,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:25,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:25,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:25,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:25,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 05:34:25,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:25,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:25,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:25,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762717458] [2020-09-25 05:34:25,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:25,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:34:25,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976523602] [2020-09-25 05:34:25,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:25,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:25,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:25,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:25,132 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 05:34:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:27,732 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 05:34:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:27,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 05:34:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:27,749 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 05:34:27,750 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 05:34:27,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 05:34:27,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 05:34:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 05:34:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1175 transitions. [2020-09-25 05:34:27,821 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1175 transitions. Word has length 181 [2020-09-25 05:34:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:27,824 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1175 transitions. [2020-09-25 05:34:27,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1175 transitions. [2020-09-25 05:34:27,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 05:34:27,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:27,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:27,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:27,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:27,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:27,834 INFO L82 PathProgramCache]: Analyzing trace with hash -166930083, now seen corresponding path program 1 times [2020-09-25 05:34:27,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:27,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143505319] [2020-09-25 05:34:27,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:27,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:32,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 05:34:32,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:32,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:34:32,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:32,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:34:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:34:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:34:32,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:32,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:33,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:33,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:33,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:33,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:34:33,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:33,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:33,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:33,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:33,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:34:33,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:33,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:33,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:33,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:34:33,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:34:33,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:33,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:34:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:33,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143505319] [2020-09-25 05:34:33,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:33,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:34:33,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710115683] [2020-09-25 05:34:33,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:33,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:33,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:33,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:33,137 INFO L87 Difference]: Start difference. First operand 966 states and 1175 transitions. Second operand 7 states. [2020-09-25 05:34:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:35,738 INFO L93 Difference]: Finished difference Result 2714 states and 3475 transitions. [2020-09-25 05:34:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:35,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 05:34:35,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:35,750 INFO L225 Difference]: With dead ends: 2714 [2020-09-25 05:34:35,750 INFO L226 Difference]: Without dead ends: 1772 [2020-09-25 05:34:35,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2020-09-25 05:34:35,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1637. [2020-09-25 05:34:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2020-09-25 05:34:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2022 transitions. [2020-09-25 05:34:35,819 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2022 transitions. Word has length 182 [2020-09-25 05:34:35,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:35,820 INFO L479 AbstractCegarLoop]: Abstraction has 1637 states and 2022 transitions. [2020-09-25 05:34:35,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2022 transitions. [2020-09-25 05:34:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 05:34:35,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:35,830 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:35,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:35,831 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:35,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:35,831 INFO L82 PathProgramCache]: Analyzing trace with hash 621217626, now seen corresponding path program 1 times [2020-09-25 05:34:35,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:35,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518785888] [2020-09-25 05:34:35,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:40,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 05:34:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:34:40,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:40,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 05:34:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 05:34:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:41,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:41,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:41,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:41,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:41,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:34:41,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:41,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:41,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:41,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:41,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:41,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:34:41,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:34:41,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:41,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:41,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:34:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:41,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518785888] [2020-09-25 05:34:41,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:41,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:41,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124648394] [2020-09-25 05:34:41,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:41,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:41,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:41,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:41,159 INFO L87 Difference]: Start difference. First operand 1637 states and 2022 transitions. Second operand 5 states. [2020-09-25 05:34:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:43,196 INFO L93 Difference]: Finished difference Result 4395 states and 5603 transitions. [2020-09-25 05:34:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:43,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 05:34:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:43,233 INFO L225 Difference]: With dead ends: 4395 [2020-09-25 05:34:43,233 INFO L226 Difference]: Without dead ends: 2782 [2020-09-25 05:34:43,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2020-09-25 05:34:43,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2078. [2020-09-25 05:34:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2078 states. [2020-09-25 05:34:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2609 transitions. [2020-09-25 05:34:43,360 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2609 transitions. Word has length 189 [2020-09-25 05:34:43,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:43,362 INFO L479 AbstractCegarLoop]: Abstraction has 2078 states and 2609 transitions. [2020-09-25 05:34:43,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:43,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2609 transitions. [2020-09-25 05:34:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 05:34:43,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:43,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:43,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:43,380 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:43,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:43,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1816533928, now seen corresponding path program 1 times [2020-09-25 05:34:43,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:43,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603484604] [2020-09-25 05:34:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:48,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 05:34:48,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:34:48,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:34:48,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:48,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:48,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:48,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 05:34:48,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 05:34:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:48,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:48,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:48,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:48,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:48,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:48,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:48,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:48,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:48,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:48,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:48,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:34:48,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:48,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:34:48,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:48,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:34:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:48,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603484604] [2020-09-25 05:34:48,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:48,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:48,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952941318] [2020-09-25 05:34:48,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:48,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:48,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:48,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:48,723 INFO L87 Difference]: Start difference. First operand 2078 states and 2609 transitions. Second operand 5 states. [2020-09-25 05:34:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:50,352 INFO L93 Difference]: Finished difference Result 4853 states and 6219 transitions. [2020-09-25 05:34:50,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:50,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-25 05:34:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:50,364 INFO L225 Difference]: With dead ends: 4853 [2020-09-25 05:34:50,364 INFO L226 Difference]: Without dead ends: 2018 [2020-09-25 05:34:50,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2020-09-25 05:34:50,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2008. [2020-09-25 05:34:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-25 05:34:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2459 transitions. [2020-09-25 05:34:50,433 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2459 transitions. Word has length 190 [2020-09-25 05:34:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:50,434 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 2459 transitions. [2020-09-25 05:34:50,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2459 transitions. [2020-09-25 05:34:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 05:34:50,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:50,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:50,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:50,445 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:50,445 INFO L82 PathProgramCache]: Analyzing trace with hash -220137183, now seen corresponding path program 1 times [2020-09-25 05:34:50,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:50,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501485341] [2020-09-25 05:34:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:50,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:55,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 05:34:55,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:34:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:34:55,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:55,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 05:34:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 05:34:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:55,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:55,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:55,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:55,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:55,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:55,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:55,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:55,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 05:34:55,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:34:55,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:55,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:34:55,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:55,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501485341] [2020-09-25 05:34:55,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:55,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:34:55,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162028977] [2020-09-25 05:34:55,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:34:55,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:55,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:34:55,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:55,803 INFO L87 Difference]: Start difference. First operand 2008 states and 2459 transitions. Second operand 6 states.