/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/Problem02_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:54:27,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:54:27,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:54:27,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:54:27,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:54:27,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:54:27,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:54:27,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:54:27,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:54:27,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:54:27,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:54:27,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:54:27,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:54:27,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:54:27,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:54:27,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:54:27,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:54:27,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:54:27,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:54:27,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:54:27,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:54:27,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:54:27,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:54:27,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:54:27,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:54:27,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:54:27,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:54:27,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:54:27,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:54:27,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:54:27,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:54:27,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:54:27,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:54:27,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:54:27,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:54:27,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:54:27,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:54:27,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:54:27,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:54:27,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:54:27,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:54:27,339 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 07:54:27,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:54:27,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:54:27,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:54:27,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:54:27,386 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:54:27,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:54:27,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:54:27,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:54:27,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:54:27,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:54:27,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:54:27,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:54:27,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:54:27,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:54:27,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:54:27,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:54:27,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:54:27,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:54:27,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:54:27,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:54:27,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:54:27,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:54:27,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:54:27,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:54:27,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:54:27,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:54:27,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:54:27,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:54:27,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:54:27,391 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 07:54:27,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:54:27,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:54:27,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:54:27,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:54:27,895 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:54:27,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 07:54:27,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79729a627/127476f095274f868cac0d6eb080ac24/FLAG52d5aac0d [2020-09-25 07:54:28,562 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:54:28,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 07:54:28,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79729a627/127476f095274f868cac0d6eb080ac24/FLAG52d5aac0d [2020-09-25 07:54:28,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79729a627/127476f095274f868cac0d6eb080ac24 [2020-09-25 07:54:28,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:54:28,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:54:28,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:28,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:54:28,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:54:28,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:28" (1/1) ... [2020-09-25 07:54:28,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249e641f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:28, skipping insertion in model container [2020-09-25 07:54:28,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:28" (1/1) ... [2020-09-25 07:54:28,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:54:28,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:54:29,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:29,390 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:54:29,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:29,633 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:54:29,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29 WrapperNode [2020-09-25 07:54:29,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:29,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:54:29,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:54:29,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:54:29,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29" (1/1) ... [2020-09-25 07:54:29,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29" (1/1) ... [2020-09-25 07:54:29,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29" (1/1) ... [2020-09-25 07:54:29,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29" (1/1) ... [2020-09-25 07:54:29,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29" (1/1) ... [2020-09-25 07:54:29,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29" (1/1) ... [2020-09-25 07:54:29,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29" (1/1) ... [2020-09-25 07:54:29,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:54:29,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:54:29,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:54:29,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:54:29,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29" (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 07:54:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:54:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:54:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:54:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:54:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:54:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:54:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:54:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:54:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:54:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:54:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:54:31,181 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:54:31,182 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:54:31,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:31 BoogieIcfgContainer [2020-09-25 07:54:31,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:54:31,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:54:31,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:54:31,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:54:31,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:54:28" (1/3) ... [2020-09-25 07:54:31,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6865ff13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:31, skipping insertion in model container [2020-09-25 07:54:31,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29" (2/3) ... [2020-09-25 07:54:31,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6865ff13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:31, skipping insertion in model container [2020-09-25 07:54:31,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:31" (3/3) ... [2020-09-25 07:54:31,211 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-09-25 07:54:31,222 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:54:31,233 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:54:31,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:54:31,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:54:31,288 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:54:31,288 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:54:31,288 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:54:31,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:54:31,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:54:31,289 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:54:31,289 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:54:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:54:31,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 07:54:31,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:31,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:31,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:31,353 INFO L82 PathProgramCache]: Analyzing trace with hash -404902623, now seen corresponding path program 1 times [2020-09-25 07:54:31,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:31,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286997687] [2020-09-25 07:54:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:32,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:32,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:33,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:36,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:36,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 07:54:36,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:54:36,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:54:36,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:36,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:54:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 07:54:36,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 07:54:36,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:36,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:36,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:36,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:36,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:54:36,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:36,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:36,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:54:36,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:37,010 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 07:54:37,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286997687] [2020-09-25 07:54:37,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:54:37,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:54:37,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070242847] [2020-09-25 07:54:37,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:54:37,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:37,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:54:37,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:54:37,041 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:54:39,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:39,098 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 07:54:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:54:39,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-25 07:54:39,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:39,133 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 07:54:39,133 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 07:54:39,145 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 07:54:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 07:54:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 07:54:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 07:54:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 07:54:39,247 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 158 [2020-09-25 07:54:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:39,248 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 07:54:39,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:54:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 07:54:39,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 07:54:39,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:39,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:39,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:54:39,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:39,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:39,259 INFO L82 PathProgramCache]: Analyzing trace with hash 856620700, now seen corresponding path program 1 times [2020-09-25 07:54:39,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:39,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175763062] [2020-09-25 07:54:39,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:44,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:44,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 07:54:44,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:54:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:54:44,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:44,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:54:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:54:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 07:54:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:44,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:44,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:44,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:44,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:54:44,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:44,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:54:44,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:44,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:44,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:44,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:54:44,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:54:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 07:54:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:44,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:54:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:54:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:45,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175763062] [2020-09-25 07:54:45,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:45,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:54:45,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747447877] [2020-09-25 07:54:45,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:54:45,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:45,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:54:45,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:54:45,025 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 12 states. [2020-09-25 07:54:48,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:48,604 INFO L93 Difference]: Finished difference Result 1927 states and 2548 transitions. [2020-09-25 07:54:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:54:48,605 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 192 [2020-09-25 07:54:48,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:48,611 INFO L225 Difference]: With dead ends: 1927 [2020-09-25 07:54:48,611 INFO L226 Difference]: Without dead ends: 887 [2020-09-25 07:54:48,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:54:48,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-09-25 07:54:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 722. [2020-09-25 07:54:48,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-09-25 07:54:48,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 845 transitions. [2020-09-25 07:54:48,656 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 845 transitions. Word has length 192 [2020-09-25 07:54:48,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:48,657 INFO L479 AbstractCegarLoop]: Abstraction has 722 states and 845 transitions. [2020-09-25 07:54:48,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:54:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 845 transitions. [2020-09-25 07:54:48,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 07:54:48,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:48,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:48,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:54:48,664 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:48,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:48,664 INFO L82 PathProgramCache]: Analyzing trace with hash 564185116, now seen corresponding path program 1 times [2020-09-25 07:54:48,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:48,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998363877] [2020-09-25 07:54:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:49,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:50,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:53,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:53,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 07:54:53,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:54:53,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:54:53,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:53,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:54:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 07:54:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:53,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:53,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:53,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:53,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:54:53,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:53,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:54:53,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:53,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:53,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:54:53,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:53,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 07:54:53,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:53,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:54:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:54:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:53,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998363877] [2020-09-25 07:54:53,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:54:53,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:54:53,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298270664] [2020-09-25 07:54:53,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:54:53,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:53,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:54:53,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:54:53,982 INFO L87 Difference]: Start difference. First operand 722 states and 845 transitions. Second operand 7 states. [2020-09-25 07:54:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:56,116 INFO L93 Difference]: Finished difference Result 2048 states and 2444 transitions. [2020-09-25 07:54:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:54:56,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 07:54:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:56,131 INFO L225 Difference]: With dead ends: 2048 [2020-09-25 07:54:56,131 INFO L226 Difference]: Without dead ends: 1348 [2020-09-25 07:54:56,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:54:56,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-09-25 07:54:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1148. [2020-09-25 07:54:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1148 states. [2020-09-25 07:54:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1376 transitions. [2020-09-25 07:54:56,207 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1376 transitions. Word has length 193 [2020-09-25 07:54:56,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:56,207 INFO L479 AbstractCegarLoop]: Abstraction has 1148 states and 1376 transitions. [2020-09-25 07:54:56,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:54:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1376 transitions. [2020-09-25 07:54:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 07:54:56,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:56,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:56,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:54:56,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:56,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:56,216 INFO L82 PathProgramCache]: Analyzing trace with hash 257301984, now seen corresponding path program 1 times [2020-09-25 07:54:56,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:56,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797868751] [2020-09-25 07:54:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:56,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:57,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:01,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:01,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 07:55:01,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:01,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 07:55:01,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:01,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:01,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:55:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 07:55:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:55:01,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:01,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:01,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:01,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:01,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:01,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:01,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:01,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:01,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:01,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:01,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:01,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 07:55:01,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:01,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:01,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:01,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:01,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:55:01,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:01,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797868751] [2020-09-25 07:55:01,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:01,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:55:01,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675987771] [2020-09-25 07:55:01,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:01,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:01,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:01,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:01,851 INFO L87 Difference]: Start difference. First operand 1148 states and 1376 transitions. Second operand 8 states. [2020-09-25 07:55:05,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:05,809 INFO L93 Difference]: Finished difference Result 3407 states and 4383 transitions. [2020-09-25 07:55:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:55:05,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-09-25 07:55:05,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:05,823 INFO L225 Difference]: With dead ends: 3407 [2020-09-25 07:55:05,823 INFO L226 Difference]: Without dead ends: 2170 [2020-09-25 07:55:05,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2020-09-25 07:55:05,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 2115. [2020-09-25 07:55:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2115 states. [2020-09-25 07:55:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2521 transitions. [2020-09-25 07:55:05,905 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2521 transitions. Word has length 196 [2020-09-25 07:55:05,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:05,906 INFO L479 AbstractCegarLoop]: Abstraction has 2115 states and 2521 transitions. [2020-09-25 07:55:05,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:55:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2521 transitions. [2020-09-25 07:55:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 07:55:05,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:05,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:05,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:05,915 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:05,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1388580762, now seen corresponding path program 1 times [2020-09-25 07:55:05,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:05,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073365346] [2020-09-25 07:55:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:05,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:10,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:10,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 07:55:10,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:55:10,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 07:55:10,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:10,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:55:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:55:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:11,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:11,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:11,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:11,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:11,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:55:11,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:11,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:55:11,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:11,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:11,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:11,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:11,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:55:11,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 07:55:11,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:11,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:55:11,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:11,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073365346] [2020-09-25 07:55:11,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:11,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:55:11,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586556618] [2020-09-25 07:55:11,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:11,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:11,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:11,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:11,346 INFO L87 Difference]: Start difference. First operand 2115 states and 2521 transitions. Second operand 7 states. [2020-09-25 07:55:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:13,564 INFO L93 Difference]: Finished difference Result 6276 states and 7602 transitions. [2020-09-25 07:55:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:13,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 07:55:13,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:13,584 INFO L225 Difference]: With dead ends: 6276 [2020-09-25 07:55:13,584 INFO L226 Difference]: Without dead ends: 4182 [2020-09-25 07:55:13,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:13,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4182 states. [2020-09-25 07:55:13,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4182 to 3876. [2020-09-25 07:55:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3876 states. [2020-09-25 07:55:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 4662 transitions. [2020-09-25 07:55:13,729 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 4662 transitions. Word has length 203 [2020-09-25 07:55:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:13,730 INFO L479 AbstractCegarLoop]: Abstraction has 3876 states and 4662 transitions. [2020-09-25 07:55:13,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 4662 transitions. [2020-09-25 07:55:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 07:55:13,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:13,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:13,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:55:13,743 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:13,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:13,743 INFO L82 PathProgramCache]: Analyzing trace with hash -424052664, now seen corresponding path program 1 times [2020-09-25 07:55:13,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:13,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964227692] [2020-09-25 07:55:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:13,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:13,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking...