/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=0.8 --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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:50:57,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:50:57,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:50:57,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:50:57,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:50:57,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:50:57,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:50:57,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:50:57,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:50:57,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:50:57,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:50:57,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:50:57,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:50:57,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:50:57,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:50:57,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:50:57,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:50:57,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:50:57,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:50:57,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:50:57,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:50:57,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:50:57,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:50:57,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:50:57,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:50:57,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:50:57,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:50:57,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:50:57,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:50:57,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:50:57,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:50:57,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:50:57,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:50:57,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:50:57,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:50:57,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:50:57,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:50:57,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:50:57,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:50:57,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:50:57,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:50:57,420 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 07:50:57,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:50:57,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:50:57,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:50:57,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:50:57,468 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:50:57,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:50:57,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:50:57,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:50:57,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:50:57,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:50:57,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:50:57,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:50:57,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:50:57,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:50:57,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:50:57,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:50:57,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:50:57,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:50:57,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:50:57,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:50:57,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:50:57,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:57,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:50:57,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:50:57,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:50:57,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:50:57,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:50:57,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:50:57,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:50:57,475 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:50:57,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:50:57,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:50:57,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:50:57,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:50:57,951 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:50:57,952 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 07:50:58,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffae089c7/62a1b7d981914030bc296baa3d121c5a/FLAGac40b0fb1 [2020-09-25 07:50:58,683 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:50:58,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 07:50:58,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffae089c7/62a1b7d981914030bc296baa3d121c5a/FLAGac40b0fb1 [2020-09-25 07:50:58,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffae089c7/62a1b7d981914030bc296baa3d121c5a [2020-09-25 07:50:58,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:50:58,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:50:58,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:58,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:50:58,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:50:58,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763ad0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58, skipping insertion in model container [2020-09-25 07:50:58,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:50:59,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:50:59,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:59,545 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:50:59,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:59,798 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:50:59,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59 WrapperNode [2020-09-25 07:50:59,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:59,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:50:59,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:50:59,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:50:59,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:50:59,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:50:59,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:50:59,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:50:59,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:51:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:51:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:51:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:51:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:51:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:51:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:51:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:51:01,349 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:51:01,350 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:51:01,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:01 BoogieIcfgContainer [2020-09-25 07:51:01,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:51:01,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:51:01,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:51:01,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:51:01,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:50:58" (1/3) ... [2020-09-25 07:51:01,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b16e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:01, skipping insertion in model container [2020-09-25 07:51:01,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (2/3) ... [2020-09-25 07:51:01,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b16e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:01, skipping insertion in model container [2020-09-25 07:51:01,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:01" (3/3) ... [2020-09-25 07:51:01,378 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-25 07:51:01,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:51:01,412 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:51:01,437 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:01,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:01,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:01,485 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:01,485 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:01,485 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:01,485 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:01,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:01,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:01,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 07:51:01,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:01,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:01,550 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:01,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:01,558 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-25 07:51:01,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:01,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365507642] [2020-09-25 07:51:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:03,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:04,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:05,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:06,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:06,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 07:51:06,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:51:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:51:06,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:06,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:51:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 07:51:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:51:07,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:07,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:07,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:07,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:07,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:07,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 07:51:07,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:07,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:51:07,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:51:07,249 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 07:51:07,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365507642] [2020-09-25 07:51:07,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:07,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:51:07,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567341551] [2020-09-25 07:51:07,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:51:07,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:07,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:51:07,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:51:07,281 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:51:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:09,427 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 07:51:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:51:09,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 07:51:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:09,457 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 07:51:09,458 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 07:51:09,469 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 07:51:09,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 07:51:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 07:51:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:51:09,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 07:51:09,599 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 141 [2020-09-25 07:51:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:09,600 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 07:51:09,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:51:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 07:51:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 07:51:09,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:09,609 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] [2020-09-25 07:51:09,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:51:09,610 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:09,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1572128645, now seen corresponding path program 1 times [2020-09-25 07:51:09,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:09,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69863123] [2020-09-25 07:51:09,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:09,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:09,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:12,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:13,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:14,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 07:51:14,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:51:14,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 07:51:14,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:14,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:51:14,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:51:14,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:14,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:14,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:14,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:51:14,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:14,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:51:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 07:51:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:14,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:14,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:14,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 07:51:14,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:14,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:14,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:51:14,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:15,046 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 07:51:15,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69863123] [2020-09-25 07:51:15,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:15,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:51:15,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699761139] [2020-09-25 07:51:15,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:15,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:15,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:15,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:15,051 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 07:51:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:17,414 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 07:51:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:51:17,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 07:51:17,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:17,422 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 07:51:17,422 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 07:51:17,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:51:17,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 07:51:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 07:51:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 07:51:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1108 transitions. [2020-09-25 07:51:17,467 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1108 transitions. Word has length 162 [2020-09-25 07:51:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:17,468 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1108 transitions. [2020-09-25 07:51:17,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1108 transitions. [2020-09-25 07:51:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 07:51:17,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:17,474 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] [2020-09-25 07:51:17,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:51:17,475 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:17,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:17,475 INFO L82 PathProgramCache]: Analyzing trace with hash 127836767, now seen corresponding path program 1 times [2020-09-25 07:51:17,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:17,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912740173] [2020-09-25 07:51:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:17,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:19,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 07:51:22,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:51:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:51:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:51:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:22,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:51:22,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:22,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:22,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:51:22,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:51:22,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:22,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 07:51:22,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:22,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:51:22,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,792 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 07:51:22,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912740173] [2020-09-25 07:51:22,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:22,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:51:22,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210170739] [2020-09-25 07:51:22,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:51:22,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:22,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:51:22,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:51:22,797 INFO L87 Difference]: Start difference. First operand 901 states and 1108 transitions. Second operand 8 states. [2020-09-25 07:51:25,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:25,956 INFO L93 Difference]: Finished difference Result 2983 states and 3934 transitions. [2020-09-25 07:51:25,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:51:25,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-09-25 07:51:25,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:25,977 INFO L225 Difference]: With dead ends: 2983 [2020-09-25 07:51:25,977 INFO L226 Difference]: Without dead ends: 2106 [2020-09-25 07:51:25,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:51:25,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-09-25 07:51:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1983. [2020-09-25 07:51:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-09-25 07:51:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2511 transitions. [2020-09-25 07:51:26,095 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2511 transitions. Word has length 163 [2020-09-25 07:51:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:26,097 INFO L479 AbstractCegarLoop]: Abstraction has 1983 states and 2511 transitions. [2020-09-25 07:51:26,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:51:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2511 transitions. [2020-09-25 07:51:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 07:51:26,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:26,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:26,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:51:26,113 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:26,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:26,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1373458601, now seen corresponding path program 1 times [2020-09-25 07:51:26,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:26,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030855599] [2020-09-25 07:51:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:26,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:26,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:30,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:30,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:31,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 07:51:31,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:31,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 07:51:31,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:31,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:31,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:31,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:51:31,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:51:31,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:31,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:31,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:31,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:31,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:31,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:51:31,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:31,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:31,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:31,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:31,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:31,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:31,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:31,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:51:31,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:31,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:51:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:31,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:51:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:31,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:31,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:31,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 07:51:31,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:31,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:31,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:31,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:31,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:51:31,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:31,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030855599] [2020-09-25 07:51:31,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:31,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:31,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503827554] [2020-09-25 07:51:31,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:31,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:31,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:31,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:31,545 INFO L87 Difference]: Start difference. First operand 1983 states and 2511 transitions. Second operand 7 states. [2020-09-25 07:51:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:33,770 INFO L93 Difference]: Finished difference Result 4382 states and 5707 transitions. [2020-09-25 07:51:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:51:33,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 07:51:33,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:33,788 INFO L225 Difference]: With dead ends: 4382 [2020-09-25 07:51:33,788 INFO L226 Difference]: Without dead ends: 2423 [2020-09-25 07:51:33,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 07:51:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2020-09-25 07:51:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2165. [2020-09-25 07:51:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2165 states. [2020-09-25 07:51:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 2697 transitions. [2020-09-25 07:51:33,878 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 2697 transitions. Word has length 193 [2020-09-25 07:51:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:33,879 INFO L479 AbstractCegarLoop]: Abstraction has 2165 states and 2697 transitions. [2020-09-25 07:51:33,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 2697 transitions. [2020-09-25 07:51:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 07:51:33,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:33,890 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:33,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:51:33,891 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:33,891 INFO L82 PathProgramCache]: Analyzing trace with hash 82298840, now seen corresponding path program 1 times [2020-09-25 07:51:33,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:33,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205918624] [2020-09-25 07:51:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:38,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:38,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 07:51:38,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 07:51:38,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:51:38,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:38,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 07:51:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 07:51:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:39,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:39,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:39,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:51:39,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:39,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:39,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:51:39,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:39,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:51:39,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:39,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:51:39,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:39,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:51:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:39,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:39,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:39,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:51:39,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 07:51:39,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:39,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:51:39,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 07:51:39,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205918624] [2020-09-25 07:51:39,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:39,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:39,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699609516] [2020-09-25 07:51:39,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:39,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:39,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:39,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:39,293 INFO L87 Difference]: Start difference. First operand 2165 states and 2697 transitions. Second operand 5 states. [2020-09-25 07:51:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:41,268 INFO L93 Difference]: Finished difference Result 5650 states and 7214 transitions. [2020-09-25 07:51:41,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:41,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-09-25 07:51:41,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:41,289 INFO L225 Difference]: With dead ends: 5650 [2020-09-25 07:51:41,290 INFO L226 Difference]: Without dead ends: 3509 [2020-09-25 07:51:41,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 3 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 07:51:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2020-09-25 07:51:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3313. [2020-09-25 07:51:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3313 states. [2020-09-25 07:51:41,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 4113 transitions. [2020-09-25 07:51:41,403 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 4113 transitions. Word has length 200 [2020-09-25 07:51:41,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:41,404 INFO L479 AbstractCegarLoop]: Abstraction has 3313 states and 4113 transitions. [2020-09-25 07:51:41,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 4113 transitions. [2020-09-25 07:51:41,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 07:51:41,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:41,420 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:51:41,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:51:41,421 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:41,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:41,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1184211931, now seen corresponding path program 1 times [2020-09-25 07:51:41,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:41,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362921775] [2020-09-25 07:51:41,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:46,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:46,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 07:51:46,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:51:46,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 07:51:46,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:46,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:51:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 07:51:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 07:51:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:46,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:46,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:46,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:46,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:46,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:46,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:51:46,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:46,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:46,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:46,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:46,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:46,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:46,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:46,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:51:46,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:46,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:46,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:51:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:46,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:51:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 07:51:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:46,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:51:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:51:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:46,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 07:51:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:46,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:46,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:46,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:51:46,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:46,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 07:51:46,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:46,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:46,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:46,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:46,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:51:46,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 07:51:46,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362921775] [2020-09-25 07:51:46,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:46,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:51:46,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644720202] [2020-09-25 07:51:46,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:51:46,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:46,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:51:46,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:51:46,857 INFO L87 Difference]: Start difference. First operand 3313 states and 4113 transitions. Second operand 8 states.