/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:42:13,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:42:13,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:42:13,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:42:13,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:42:13,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:42:13,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:42:13,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:42:13,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:42:13,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:42:13,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:42:13,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:42:13,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:42:13,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:42:13,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:42:13,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:42:13,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:42:13,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:42:13,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:42:13,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:42:13,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:42:13,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:42:13,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:42:13,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:42:13,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:42:13,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:42:13,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:42:13,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:42:13,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:42:13,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:42:13,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:42:13,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:42:13,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:42:13,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:42:13,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:42:13,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:42:13,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:42:13,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:42:13,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:42:13,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:42:13,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:42:13,335 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 [2020-09-24 20:42:13,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:42:13,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:42:13,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:42:13,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:42:13,362 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:42:13,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:42:13,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:42:13,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:42:13,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:42:13,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:42:13,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:42:13,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:42:13,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:42:13,363 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:42:13,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:42:13,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:42:13,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:42:13,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:42:13,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:42:13,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:42:13,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:42:13,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:42:13,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:42:13,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:42:13,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:42:13,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:42:13,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:42:13,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:42:13,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:42:13,367 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:42:13,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:42:13,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:42:13,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:42:13,859 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:42:13,861 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:42:13,862 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-24 20:42:13,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dad0892b5/2576eac30e1f4456826b8a8d993e2b7b/FLAG727d869d1 [2020-09-24 20:42:14,514 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:42:14,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-24 20:42:14,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dad0892b5/2576eac30e1f4456826b8a8d993e2b7b/FLAG727d869d1 [2020-09-24 20:42:14,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dad0892b5/2576eac30e1f4456826b8a8d993e2b7b [2020-09-24 20:42:14,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:42:14,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:42:14,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:42:14,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:42:14,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:42:14,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:42:14" (1/1) ... [2020-09-24 20:42:14,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171e6c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:14, skipping insertion in model container [2020-09-24 20:42:14,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:42:14" (1/1) ... [2020-09-24 20:42:14,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:42:14,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:42:15,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:42:15,214 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:42:15,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:42:15,379 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:42:15,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:15 WrapperNode [2020-09-24 20:42:15,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:42:15,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:42:15,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:42:15,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:42:15,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:15" (1/1) ... [2020-09-24 20:42:15,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:15" (1/1) ... [2020-09-24 20:42:15,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:15" (1/1) ... [2020-09-24 20:42:15,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:15" (1/1) ... [2020-09-24 20:42:15,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:15" (1/1) ... [2020-09-24 20:42:15,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:15" (1/1) ... [2020-09-24 20:42:15,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:15" (1/1) ... [2020-09-24 20:42:15,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:42:15,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:42:15,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:42:15,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:42:15,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:15" (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 [2020-09-24 20:42:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:42:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:42:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:42:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-24 20:42:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-24 20:42:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:42:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:42:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:42:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-24 20:42:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-24 20:42:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-24 20:42:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-24 20:42:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-24 20:42:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-24 20:42:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-24 20:42:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-24 20:42:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-24 20:42:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-24 20:42:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-24 20:42:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-24 20:42:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-24 20:42:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-24 20:42:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-24 20:42:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-24 20:42:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-24 20:42:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-24 20:42:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-24 20:42:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-24 20:42:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-24 20:42:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-24 20:42:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-24 20:42:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-24 20:42:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-24 20:42:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-24 20:42:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:42:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:42:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:42:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:42:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:42:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:42:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:42:15,943 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:42:15,944 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 20:42:15,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:42:15 BoogieIcfgContainer [2020-09-24 20:42:15,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:42:15,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:42:15,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:42:15,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:42:15,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:42:14" (1/3) ... [2020-09-24 20:42:15,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6296e2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:42:15, skipping insertion in model container [2020-09-24 20:42:15,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:15" (2/3) ... [2020-09-24 20:42:15,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6296e2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:42:15, skipping insertion in model container [2020-09-24 20:42:15,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:42:15" (3/3) ... [2020-09-24 20:42:15,971 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-24 20:42:15,981 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:42:15,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:42:16,011 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:42:16,041 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:42:16,041 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:42:16,041 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:42:16,041 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:42:16,041 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:42:16,042 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:42:16,042 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:42:16,042 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:42:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-24 20:42:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:42:16,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:16,081 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] [2020-09-24 20:42:16,081 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:16,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:16,089 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-24 20:42:16,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:16,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839594443] [2020-09-24 20:42:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:16,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:16,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:18,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:18,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:42:18,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:42:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2306 [2020-09-24 20:42:18,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:42:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:42:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 20:42:18,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 20:42:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:18,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:18,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:18,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:18,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:42:18,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:18,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:18,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 20:42:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:18,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:18,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:18,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:18,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:42:18,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:42:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:42:18,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:18,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839594443] [2020-09-24 20:42:18,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:18,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 20:42:18,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160479975] [2020-09-24 20:42:18,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:42:18,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:18,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:42:18,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:42:18,912 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 10 states. [2020-09-24 20:42:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:19,700 INFO L93 Difference]: Finished difference Result 435 states and 509 transitions. [2020-09-24 20:42:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:42:19,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-09-24 20:42:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:19,717 INFO L225 Difference]: With dead ends: 435 [2020-09-24 20:42:19,718 INFO L226 Difference]: Without dead ends: 279 [2020-09-24 20:42:19,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:42:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-24 20:42:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 139. [2020-09-24 20:42:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-24 20:42:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2020-09-24 20:42:19,791 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 48 [2020-09-24 20:42:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:19,792 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2020-09-24 20:42:19,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:42:19,792 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2020-09-24 20:42:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 20:42:19,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:19,796 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] [2020-09-24 20:42:19,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:42:19,796 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:19,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:19,797 INFO L82 PathProgramCache]: Analyzing trace with hash -53936734, now seen corresponding path program 1 times [2020-09-24 20:42:19,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:19,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292526988] [2020-09-24 20:42:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:19,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:20,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:20,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:21,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:24,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:24,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 20:42:24,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:42:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 20:42:24,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:24,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:42:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:42:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:25,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:25,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:25,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:25,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:25,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:25,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:42:25,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:25,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 20:42:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:25,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:25,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:25,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:42:25,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:42:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:25,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292526988] [2020-09-24 20:42:25,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:25,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 20:42:25,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307236075] [2020-09-24 20:42:25,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:42:25,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:25,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:42:25,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:42:25,184 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand 12 states. [2020-09-24 20:42:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:26,342 INFO L93 Difference]: Finished difference Result 451 states and 512 transitions. [2020-09-24 20:42:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 20:42:26,342 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-09-24 20:42:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:26,348 INFO L225 Difference]: With dead ends: 451 [2020-09-24 20:42:26,348 INFO L226 Difference]: Without dead ends: 339 [2020-09-24 20:42:26,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 20:42:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-09-24 20:42:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 153. [2020-09-24 20:42:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-24 20:42:26,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 170 transitions. [2020-09-24 20:42:26,389 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 170 transitions. Word has length 63 [2020-09-24 20:42:26,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:26,390 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 170 transitions. [2020-09-24 20:42:26,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:42:26,390 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 170 transitions. [2020-09-24 20:42:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 20:42:26,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:26,397 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] [2020-09-24 20:42:26,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:42:26,397 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:26,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1116699365, now seen corresponding path program 1 times [2020-09-24 20:42:26,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:26,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791166205] [2020-09-24 20:42:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:26,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:26,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:26,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:26,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:26,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:26,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:30,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:31,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:31,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 20:42:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:42:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:42:31,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:42:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 20:42:31,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:31,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:31,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:31,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:31,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:31,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:42:31,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 20:42:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:31,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:31,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:31,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:31,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:31,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:42:31,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:42:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:42:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:31,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791166205] [2020-09-24 20:42:31,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:31,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 20:42:31,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560296811] [2020-09-24 20:42:31,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:42:31,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:31,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:42:31,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:42:31,611 INFO L87 Difference]: Start difference. First operand 153 states and 170 transitions. Second operand 11 states. [2020-09-24 20:42:32,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:32,342 INFO L93 Difference]: Finished difference Result 510 states and 576 transitions. [2020-09-24 20:42:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:42:32,343 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-09-24 20:42:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:32,345 INFO L225 Difference]: With dead ends: 510 [2020-09-24 20:42:32,346 INFO L226 Difference]: Without dead ends: 407 [2020-09-24 20:42:32,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:42:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-09-24 20:42:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 165. [2020-09-24 20:42:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-24 20:42:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 184 transitions. [2020-09-24 20:42:32,360 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 184 transitions. Word has length 65 [2020-09-24 20:42:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:32,361 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 184 transitions. [2020-09-24 20:42:32,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:42:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 184 transitions. [2020-09-24 20:42:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 20:42:32,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:32,364 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] [2020-09-24 20:42:32,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:42:32,364 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:32,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:32,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1492663361, now seen corresponding path program 1 times [2020-09-24 20:42:32,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:32,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658706990] [2020-09-24 20:42:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:32,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:32,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:34,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:36,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:36,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 20:42:36,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 20:42:36,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3638 [2020-09-24 20:42:36,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:42:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 20:42:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:36,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:36,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:36,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:36,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:36,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:36,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:42:36,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:36,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 20:42:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:36,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:36,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:36,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:36,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:42:36,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:36,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:42:36,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:36,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:42:36,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:36,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658706990] [2020-09-24 20:42:36,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:36,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 20:42:36,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763792772] [2020-09-24 20:42:36,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:42:36,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:36,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:42:36,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:42:36,183 INFO L87 Difference]: Start difference. First operand 165 states and 184 transitions. Second operand 12 states. [2020-09-24 20:42:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:37,036 INFO L93 Difference]: Finished difference Result 535 states and 604 transitions. [2020-09-24 20:42:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 20:42:37,036 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-09-24 20:42:37,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:37,039 INFO L225 Difference]: With dead ends: 535 [2020-09-24 20:42:37,039 INFO L226 Difference]: Without dead ends: 371 [2020-09-24 20:42:37,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2020-09-24 20:42:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-09-24 20:42:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 158. [2020-09-24 20:42:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-24 20:42:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2020-09-24 20:42:37,056 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 65 [2020-09-24 20:42:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:37,057 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2020-09-24 20:42:37,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:42:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2020-09-24 20:42:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 20:42:37,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:37,059 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] [2020-09-24 20:42:37,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:42:37,062 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:37,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:37,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1373673799, now seen corresponding path program 1 times [2020-09-24 20:42:37,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:37,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857842132] [2020-09-24 20:42:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:37,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:37,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:37,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:37,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:37,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:39,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:42,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:42,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:42:42,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:42:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:42:42,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:42:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 20:42:42,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:42,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:42,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:42,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:42:42,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:42,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 20:42:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:42,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:42,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:42,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:42,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:42:42,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:42:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:42,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:42,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857842132] [2020-09-24 20:42:42,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:42,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 20:42:42,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627925933] [2020-09-24 20:42:42,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:42:42,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:42,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:42:42,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:42:42,230 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand 11 states. [2020-09-24 20:42:43,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:43,187 INFO L93 Difference]: Finished difference Result 551 states and 624 transitions. [2020-09-24 20:42:43,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:42:43,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-09-24 20:42:43,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:43,190 INFO L225 Difference]: With dead ends: 551 [2020-09-24 20:42:43,190 INFO L226 Difference]: Without dead ends: 394 [2020-09-24 20:42:43,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:42:43,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-24 20:42:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 139. [2020-09-24 20:42:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-24 20:42:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2020-09-24 20:42:43,205 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 68 [2020-09-24 20:42:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:43,205 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2020-09-24 20:42:43,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:42:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2020-09-24 20:42:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 20:42:43,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:43,207 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:42:43,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:42:43,208 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:43,208 INFO L82 PathProgramCache]: Analyzing trace with hash -624749260, now seen corresponding path program 1 times [2020-09-24 20:42:43,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:43,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722326577] [2020-09-24 20:42:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:43,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:43,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:46,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:46,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 20:42:46,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:42:46,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3535 [2020-09-24 20:42:46,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:42:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 20:42:46,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:46,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:46,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:46,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:46,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:46,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:42:46,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 20:42:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:46,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:46,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:46,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:46,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:42:46,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:42:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:42:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:46,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722326577] [2020-09-24 20:42:46,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:42:46,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:42:46,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078664665] [2020-09-24 20:42:46,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:42:46,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:46,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:42:46,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:42:46,934 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand 12 states. [2020-09-24 20:42:48,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:48,094 INFO L93 Difference]: Finished difference Result 580 states and 661 transitions. [2020-09-24 20:42:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 20:42:48,094 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-09-24 20:42:48,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:48,098 INFO L225 Difference]: With dead ends: 580 [2020-09-24 20:42:48,098 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 20:42:48,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 20:42:48,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 20:42:48,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 191. [2020-09-24 20:42:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-24 20:42:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 215 transitions. [2020-09-24 20:42:48,112 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 215 transitions. Word has length 71 [2020-09-24 20:42:48,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:48,112 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 215 transitions. [2020-09-24 20:42:48,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:42:48,112 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 215 transitions. [2020-09-24 20:42:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:42:48,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:48,115 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:42:48,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:42:48,115 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:48,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:48,116 INFO L82 PathProgramCache]: Analyzing trace with hash -272178825, now seen corresponding path program 1 times [2020-09-24 20:42:48,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:48,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108053461] [2020-09-24 20:42:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:48,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:49,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:53,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:53,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:42:53,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:42:53,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:42:53,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:42:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:42:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:53,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:53,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:53,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:53,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:42:53,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 20:42:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:53,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:53,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:53,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:53,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:53,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:42:53,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:53,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:42:53,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:53,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:42:53,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:53,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108053461] [2020-09-24 20:42:53,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:53,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 20:42:53,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153808232] [2020-09-24 20:42:53,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:42:53,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:53,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:42:53,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:42:53,296 INFO L87 Difference]: Start difference. First operand 191 states and 215 transitions. Second operand 12 states. [2020-09-24 20:42:54,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:54,314 INFO L93 Difference]: Finished difference Result 625 states and 716 transitions. [2020-09-24 20:42:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 20:42:54,314 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-24 20:42:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:54,319 INFO L225 Difference]: With dead ends: 625 [2020-09-24 20:42:54,320 INFO L226 Difference]: Without dead ends: 444 [2020-09-24 20:42:54,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2020-09-24 20:42:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-09-24 20:42:54,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 226. [2020-09-24 20:42:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-24 20:42:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2020-09-24 20:42:54,332 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 72 [2020-09-24 20:42:54,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:54,333 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2020-09-24 20:42:54,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:42:54,333 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2020-09-24 20:42:54,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:42:54,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:54,334 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:42:54,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:42:54,335 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:54,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:54,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1197654620, now seen corresponding path program 1 times [2020-09-24 20:42:54,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:54,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147630246] [2020-09-24 20:42:54,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:54,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:59,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:59,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:42:59,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:42:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 20:42:59,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:42:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:42:59,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:59,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:59,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:59,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:59,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:59,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:42:59,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:59,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:59,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:42:59,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 20:42:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:59,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:59,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:59,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:59,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:42:59,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:42:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:59,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:59,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147630246] [2020-09-24 20:42:59,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:59,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 20:42:59,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799309456] [2020-09-24 20:42:59,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:42:59,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:59,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:42:59,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:42:59,597 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 12 states. [2020-09-24 20:43:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:00,690 INFO L93 Difference]: Finished difference Result 632 states and 727 transitions. [2020-09-24 20:43:00,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 20:43:00,691 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-24 20:43:00,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:00,693 INFO L225 Difference]: With dead ends: 632 [2020-09-24 20:43:00,694 INFO L226 Difference]: Without dead ends: 422 [2020-09-24 20:43:00,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 20:43:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-09-24 20:43:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 226. [2020-09-24 20:43:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-24 20:43:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2020-09-24 20:43:00,707 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 72 [2020-09-24 20:43:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:00,707 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2020-09-24 20:43:00,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:43:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2020-09-24 20:43:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 20:43:00,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:00,709 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:43:00,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:43:00,709 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:00,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:00,709 INFO L82 PathProgramCache]: Analyzing trace with hash 411690812, now seen corresponding path program 1 times [2020-09-24 20:43:00,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:00,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178786190] [2020-09-24 20:43:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:00,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:01,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:05,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking...