/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:07:19,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:07:19,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:07:19,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:07:19,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:07:19,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:07:19,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:07:19,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:07:19,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:07:19,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:07:19,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:07:19,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:07:19,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:07:19,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:07:19,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:07:19,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:07:19,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:07:19,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:07:19,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:07:19,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:07:19,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:07:19,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:07:19,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:07:19,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:07:19,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:07:19,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:07:19,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:07:19,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:07:19,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:07:19,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:07:19,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:07:19,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:07:19,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:07:19,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:07:19,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:07:19,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:07:19,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:07:19,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:07:19,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:07:19,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:07:19,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:07:19,354 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 10:07:19,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:07:19,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:07:19,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:07:19,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:07:19,379 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:07:19,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:07:19,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:07:19,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:07:19,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:07:19,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:07:19,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:07:19,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:07:19,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:07:19,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:07:19,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:07:19,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:07:19,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:07:19,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:07:19,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:07:19,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:07:19,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:07:19,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:19,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:07:19,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:07:19,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:07:19,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:07:19,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:07:19,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:07:19,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:07:19,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:07:19,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:07:19,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:07:19,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:07:19,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:07:19,882 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:07:19,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label49.c [2020-09-25 10:07:19,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e318d7ca3/52e6c64bf8d34c4697a4dd0c46f5d1b0/FLAG2ee2b4a50 [2020-09-25 10:07:20,640 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:07:20,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label49.c [2020-09-25 10:07:20,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e318d7ca3/52e6c64bf8d34c4697a4dd0c46f5d1b0/FLAG2ee2b4a50 [2020-09-25 10:07:20,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e318d7ca3/52e6c64bf8d34c4697a4dd0c46f5d1b0 [2020-09-25 10:07:20,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:07:20,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:07:20,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:20,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:07:20,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:07:20,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:20" (1/1) ... [2020-09-25 10:07:20,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593c4d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:20, skipping insertion in model container [2020-09-25 10:07:20,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:20" (1/1) ... [2020-09-25 10:07:20,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:07:20,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:07:21,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:21,408 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:07:21,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:21,617 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:07:21,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:21 WrapperNode [2020-09-25 10:07:21,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:21,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:07:21,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:07:21,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:07:21,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:21" (1/1) ... [2020-09-25 10:07:21,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:21" (1/1) ... [2020-09-25 10:07:21,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:21" (1/1) ... [2020-09-25 10:07:21,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:21" (1/1) ... [2020-09-25 10:07:21,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:21" (1/1) ... [2020-09-25 10:07:21,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:21" (1/1) ... [2020-09-25 10:07:21,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:21" (1/1) ... [2020-09-25 10:07:21,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:07:21,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:07:21,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:07:21,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:07:21,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:21" (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 10:07:21,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:07:21,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:07:21,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:07:21,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:07:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:07:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:07:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:07:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:07:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:07:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:07:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:07:23,228 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:07:23,228 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:07:23,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:23 BoogieIcfgContainer [2020-09-25 10:07:23,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:07:23,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:07:23,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:07:23,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:07:23,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:07:20" (1/3) ... [2020-09-25 10:07:23,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3725bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:23, skipping insertion in model container [2020-09-25 10:07:23,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:21" (2/3) ... [2020-09-25 10:07:23,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3725bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:23, skipping insertion in model container [2020-09-25 10:07:23,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:23" (3/3) ... [2020-09-25 10:07:23,248 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label49.c [2020-09-25 10:07:23,260 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:07:23,271 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:07:23,294 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:07:23,330 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:07:23,330 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:07:23,330 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:07:23,331 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:07:23,331 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:07:23,331 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:07:23,331 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:07:23,331 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:07:23,364 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:07:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 10:07:23,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:23,386 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] [2020-09-25 10:07:23,387 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:23,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:23,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2140935381, now seen corresponding path program 1 times [2020-09-25 10:07:23,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:23,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631818181] [2020-09-25 10:07:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:23,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:27,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:28,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:28,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 10:07:28,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:07:28,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:07:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:28,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:07:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 10:07:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:07:28,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:28,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:28,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:28,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:28,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:07:28,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:28,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:29,020 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 10:07:29,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631818181] [2020-09-25 10:07:29,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:29,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:07:29,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433976205] [2020-09-25 10:07:29,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:07:29,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:29,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:07:29,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:07:29,058 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:07:31,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:31,247 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 10:07:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:07:31,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-09-25 10:07:31,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:31,295 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 10:07:31,295 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 10:07:31,310 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 10:07:31,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 10:07:31,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 10:07:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 10:07:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 10:07:31,423 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 135 [2020-09-25 10:07:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:31,424 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 10:07:31,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:07:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 10:07:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:07:31,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:31,435 INFO L422 BasicCegarLoop]: trace histogram [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 10:07:31,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:07:31,436 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:31,437 INFO L82 PathProgramCache]: Analyzing trace with hash 189734756, now seen corresponding path program 1 times [2020-09-25 10:07:31,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:31,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550437273] [2020-09-25 10:07:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:33,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:33,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:34,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:36,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:36,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 10:07:36,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:07:36,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:07:36,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:36,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:07:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:07:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:07:36,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:07:36,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:36,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:36,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:36,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:36,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 10:07:36,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:36,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:36,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:36,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 10:07:36,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:36,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:37,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:37,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 10:07:37,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:37,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:07:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:37,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550437273] [2020-09-25 10:07:37,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:37,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:07:37,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011883536] [2020-09-25 10:07:37,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:07:37,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:37,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:07:37,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:07:37,323 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 13 states. [2020-09-25 10:07:38,124 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-09-25 10:07:42,085 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-09-25 10:07:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:43,958 INFO L93 Difference]: Finished difference Result 2441 states and 3261 transitions. [2020-09-25 10:07:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 10:07:43,959 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-09-25 10:07:43,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:43,975 INFO L225 Difference]: With dead ends: 2441 [2020-09-25 10:07:43,975 INFO L226 Difference]: Without dead ends: 1579 [2020-09-25 10:07:43,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=295, Invalid=697, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:07:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2020-09-25 10:07:44,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1377. [2020-09-25 10:07:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2020-09-25 10:07:44,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1637 transitions. [2020-09-25 10:07:44,090 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1637 transitions. Word has length 156 [2020-09-25 10:07:44,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:44,091 INFO L479 AbstractCegarLoop]: Abstraction has 1377 states and 1637 transitions. [2020-09-25 10:07:44,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:07:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1637 transitions. [2020-09-25 10:07:44,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 10:07:44,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:44,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:07:44,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:07:44,101 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:44,101 INFO L82 PathProgramCache]: Analyzing trace with hash 262381646, now seen corresponding path program 1 times [2020-09-25 10:07:44,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:44,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688344680] [2020-09-25 10:07:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:44,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:44,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:46,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:48,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:49,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:49,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 10:07:49,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:07:49,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:07:49,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:49,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 10:07:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 10:07:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:49,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:49,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:49,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:49,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:49,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:07:49,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:49,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:49,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:49,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:49,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:49,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:49,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:49,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:07:49,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:49,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:07:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:49,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:49,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:49,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:49,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 10:07:49,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:49,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:07:49,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688344680] [2020-09-25 10:07:49,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:49,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:07:49,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627262067] [2020-09-25 10:07:49,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:07:49,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:49,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:07:49,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:07:49,599 INFO L87 Difference]: Start difference. First operand 1377 states and 1637 transitions. Second operand 7 states. [2020-09-25 10:07:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:51,774 INFO L93 Difference]: Finished difference Result 2656 states and 3183 transitions. [2020-09-25 10:07:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:07:51,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-09-25 10:07:51,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:51,788 INFO L225 Difference]: With dead ends: 2656 [2020-09-25 10:07:51,788 INFO L226 Difference]: Without dead ends: 1454 [2020-09-25 10:07:51,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:07:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-09-25 10:07:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1375. [2020-09-25 10:07:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-09-25 10:07:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1592 transitions. [2020-09-25 10:07:51,884 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1592 transitions. Word has length 177 [2020-09-25 10:07:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:51,885 INFO L479 AbstractCegarLoop]: Abstraction has 1375 states and 1592 transitions. [2020-09-25 10:07:51,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:07:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1592 transitions. [2020-09-25 10:07:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 10:07:51,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:51,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:07:51,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:51,897 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:51,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:51,897 INFO L82 PathProgramCache]: Analyzing trace with hash -453954667, now seen corresponding path program 1 times [2020-09-25 10:07:51,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:51,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246896729] [2020-09-25 10:07:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:55,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:55,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:56,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 10:07:56,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 10:07:56,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 10:07:56,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:56,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:07:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:07:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 10:07:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:57,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:57,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:57,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:57,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:07:57,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:57,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:07:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:57,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:57,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:57,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:57,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:57,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 10:07:57,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:57,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:07:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:57,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:57,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:57,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:57,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:07:57,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 10:07:57,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:57,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:07:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 10:07:57,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246896729] [2020-09-25 10:07:57,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:57,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:07:57,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885555391] [2020-09-25 10:07:57,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:07:57,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:57,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:07:57,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:07:57,786 INFO L87 Difference]: Start difference. First operand 1375 states and 1592 transitions. Second operand 13 states. [2020-09-25 10:08:02,209 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-25 10:08:03,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:03,471 INFO L93 Difference]: Finished difference Result 5463 states and 6635 transitions. [2020-09-25 10:08:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:08:03,472 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 181 [2020-09-25 10:08:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:03,497 INFO L225 Difference]: With dead ends: 5463 [2020-09-25 10:08:03,497 INFO L226 Difference]: Without dead ends: 4009 [2020-09-25 10:08:03,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:08:03,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2020-09-25 10:08:03,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 2633. [2020-09-25 10:08:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2020-09-25 10:08:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3049 transitions. [2020-09-25 10:08:03,616 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3049 transitions. Word has length 181 [2020-09-25 10:08:03,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:03,617 INFO L479 AbstractCegarLoop]: Abstraction has 2633 states and 3049 transitions. [2020-09-25 10:08:03,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:08:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3049 transitions. [2020-09-25 10:08:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 10:08:03,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:03,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:03,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:08:03,627 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:03,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:03,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1674088555, now seen corresponding path program 1 times [2020-09-25 10:08:03,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:03,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955180993] [2020-09-25 10:08:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:03,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking...