/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=SMALLEST --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 18:29:38,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:29:38,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:29:38,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:29:38,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:29:38,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:29:38,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:29:38,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:29:38,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:29:38,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:29:38,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:29:38,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:29:38,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:29:38,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:29:38,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:29:38,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:29:38,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:29:38,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:29:38,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:29:38,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:29:38,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:29:38,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:29:38,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:29:38,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:29:38,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:29:38,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:29:38,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:29:38,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:29:38,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:29:38,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:29:38,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:29:38,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:29:38,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:29:38,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:29:38,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:29:38,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:29:38,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:29:38,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:29:38,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:29:38,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:29:38,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:29:38,376 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 18:29:38,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:29:38,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:29:38,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:29:38,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:29:38,435 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:29:38,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:29:38,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:29:38,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:29:38,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:29:38,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:29:38,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:29:38,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:29:38,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:29:38,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:29:38,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:29:38,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:29:38,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:29:38,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:29:38,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:29:38,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:29:38,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:29:38,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:29:38,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:29:38,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:29:38,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:29:38,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:29:38,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:29:38,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:29:38,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:29:38,443 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:29:38,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:29:38,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:29:38,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:29:38,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:29:38,953 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:29:38,954 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-24 18:29:39,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7d47255c/9c83c9ac8b8240d9a3d1629932570475/FLAG48724ce58 [2020-09-24 18:29:39,638 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:29:39,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-24 18:29:39,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7d47255c/9c83c9ac8b8240d9a3d1629932570475/FLAG48724ce58 [2020-09-24 18:29:39,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7d47255c/9c83c9ac8b8240d9a3d1629932570475 [2020-09-24 18:29:39,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:29:39,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:29:39,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:29:39,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:29:39,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:29:39,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39, skipping insertion in model container [2020-09-24 18:29:39,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:29:40,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:29:40,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:29:40,317 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:29:40,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:29:40,479 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:29:40,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40 WrapperNode [2020-09-24 18:29:40,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:29:40,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:29:40,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:29:40,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:29:40,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:29:40,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:29:40,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:29:40,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:29:40,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (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 18:29:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:29:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:29:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:29:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-24 18:29:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-24 18:29:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:29:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:29:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:29:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-24 18:29:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-24 18:29:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-24 18:29:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-24 18:29:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-24 18:29:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-24 18:29:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-24 18:29:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-24 18:29:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-24 18:29:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-24 18:29:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-24 18:29:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-24 18:29:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-24 18:29:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-24 18:29:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-24 18:29:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-24 18:29:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-24 18:29:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-24 18:29:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-24 18:29:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-24 18:29:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-24 18:29:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-24 18:29:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-24 18:29:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-24 18:29:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-24 18:29:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-24 18:29:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:29:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:29:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:29:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:29:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:29:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:29:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:29:41,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:29:41,078 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 18:29:41,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:29:41 BoogieIcfgContainer [2020-09-24 18:29:41,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:29:41,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:29:41,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:29:41,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:29:41,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:29:39" (1/3) ... [2020-09-24 18:29:41,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1300d155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:29:41, skipping insertion in model container [2020-09-24 18:29:41,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (2/3) ... [2020-09-24 18:29:41,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1300d155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:29:41, skipping insertion in model container [2020-09-24 18:29:41,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:29:41" (3/3) ... [2020-09-24 18:29:41,095 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-24 18:29:41,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:29:41,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:29:41,140 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:29:41,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:29:41,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:29:41,169 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:29:41,169 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:29:41,169 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:29:41,169 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:29:41,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:29:41,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:29:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-24 18:29:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 18:29:41,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:41,207 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 18:29:41,208 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:41,215 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-24 18:29:41,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:41,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281098541] [2020-09-24 18:29:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:42,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:43,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:43,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 18:29:43,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:29:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-09-24 18:29:43,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:29:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:29:43,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:43,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:43,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:43,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:29:43,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:29:43,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:43,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 18:29:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:43,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:43,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:29:43,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:43,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:29:43,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:43,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:43,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:29:43,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:43,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:29:43,922 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 18:29:43,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281098541] [2020-09-24 18:29:43,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:43,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:29:43,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202346289] [2020-09-24 18:29:43,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:29:43,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:43,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:29:43,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:29:43,976 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-24 18:29:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:44,311 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2020-09-24 18:29:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:29:44,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-24 18:29:44,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:44,329 INFO L225 Difference]: With dead ends: 227 [2020-09-24 18:29:44,329 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 18:29:44,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:29:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 18:29:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-24 18:29:44,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-24 18:29:44,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-09-24 18:29:44,438 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 48 [2020-09-24 18:29:44,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:44,439 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-09-24 18:29:44,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:29:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-09-24 18:29:44,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 18:29:44,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:44,454 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] [2020-09-24 18:29:44,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:29:44,455 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:44,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1227098254, now seen corresponding path program 1 times [2020-09-24 18:29:44,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:44,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239313976] [2020-09-24 18:29:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:44,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:45,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:45,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:49,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:49,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 18:29:49,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:29:49,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:29:49,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:49,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:29:49,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 18:29:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:29:49,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:49,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:49,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:49,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:29:49,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:49,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:29:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:49,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:49,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:29:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:49,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:49,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:29:49,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:49,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:29:49,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:29:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:49,594 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 18:29:49,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239313976] [2020-09-24 18:29:49,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:49,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:29:49,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220035432] [2020-09-24 18:29:49,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:29:49,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:49,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:29:49,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:29:49,601 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 4 states. [2020-09-24 18:29:49,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:49,898 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2020-09-24 18:29:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:29:49,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-24 18:29:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:49,903 INFO L225 Difference]: With dead ends: 189 [2020-09-24 18:29:49,903 INFO L226 Difference]: Without dead ends: 103 [2020-09-24 18:29:49,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:29:49,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-24 18:29:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-09-24 18:29:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-24 18:29:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-09-24 18:29:49,929 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 60 [2020-09-24 18:29:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:49,930 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-09-24 18:29:49,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:29:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-09-24 18:29:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 18:29:49,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:49,943 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] [2020-09-24 18:29:49,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:29:49,947 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:49,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:49,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1578191403, now seen corresponding path program 1 times [2020-09-24 18:29:49,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:49,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346467338] [2020-09-24 18:29:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:50,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:52,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:29:52,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:29:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2610 [2020-09-24 18:29:52,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:29:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:29:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 18:29:52,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:52,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:52,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:29:52,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:29:52,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:29:52,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:29:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:52,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:29:52,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:29:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:29:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:52,723 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 18:29:52,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346467338] [2020-09-24 18:29:52,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:52,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:29:52,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354221500] [2020-09-24 18:29:52,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:29:52,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:52,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:29:52,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:29:52,728 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 8 states. [2020-09-24 18:29:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:53,393 INFO L93 Difference]: Finished difference Result 474 states and 535 transitions. [2020-09-24 18:29:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:29:53,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-24 18:29:53,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:53,401 INFO L225 Difference]: With dead ends: 474 [2020-09-24 18:29:53,401 INFO L226 Difference]: Without dead ends: 381 [2020-09-24 18:29:53,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-09-24 18:29:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-09-24 18:29:53,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 145. [2020-09-24 18:29:53,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-09-24 18:29:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2020-09-24 18:29:53,431 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 62 [2020-09-24 18:29:53,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:53,431 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2020-09-24 18:29:53,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:29:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2020-09-24 18:29:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 18:29:53,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:53,433 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 18:29:53,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:29:53,433 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:53,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:53,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1116699365, now seen corresponding path program 1 times [2020-09-24 18:29:53,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:53,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922066123] [2020-09-24 18:29:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:53,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:53,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:53,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:53,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:53,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:58,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 18:29:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:29:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:29:58,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:29:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:29:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 18:29:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:58,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:58,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:58,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:29:58,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:29:58,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:29:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:58,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:58,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:58,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:29:58,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:58,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:29:58,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:29:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:58,569 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 18:29:58,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922066123] [2020-09-24 18:29:58,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:58,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:29:58,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298141803] [2020-09-24 18:29:58,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:29:58,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:58,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:29:58,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:29:58,575 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand 8 states. [2020-09-24 18:29:59,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:59,150 INFO L93 Difference]: Finished difference Result 430 states and 491 transitions. [2020-09-24 18:29:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:29:59,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-09-24 18:29:59,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:59,153 INFO L225 Difference]: With dead ends: 430 [2020-09-24 18:29:59,154 INFO L226 Difference]: Without dead ends: 298 [2020-09-24 18:29:59,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:29:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-24 18:29:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 211. [2020-09-24 18:29:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-24 18:29:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 240 transitions. [2020-09-24 18:29:59,191 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 240 transitions. Word has length 65 [2020-09-24 18:29:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:59,192 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 240 transitions. [2020-09-24 18:29:59,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:29:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 240 transitions. [2020-09-24 18:29:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 18:29:59,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:59,199 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 18:29:59,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:29:59,199 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1492663361, now seen corresponding path program 1 times [2020-09-24 18:29:59,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:59,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622125470] [2020-09-24 18:29:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:59,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:59,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:01,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:03,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:03,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 18:30:03,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 18:30:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3881 [2020-09-24 18:30:03,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 18:30:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:30:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:03,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:03,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:03,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:03,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:30:03,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:03,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:03,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:30:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:03,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:03,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:30:03,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:03,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:03,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:30:03,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:03,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:03,163 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 18:30:03,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622125470] [2020-09-24 18:30:03,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:03,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:30:03,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336090601] [2020-09-24 18:30:03,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:30:03,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:03,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:30:03,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:30:03,167 INFO L87 Difference]: Start difference. First operand 211 states and 240 transitions. Second operand 4 states. [2020-09-24 18:30:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:03,372 INFO L93 Difference]: Finished difference Result 342 states and 389 transitions. [2020-09-24 18:30:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:30:03,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-09-24 18:30:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:03,377 INFO L225 Difference]: With dead ends: 342 [2020-09-24 18:30:03,378 INFO L226 Difference]: Without dead ends: 212 [2020-09-24 18:30:03,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:30:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-24 18:30:03,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-09-24 18:30:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-24 18:30:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 239 transitions. [2020-09-24 18:30:03,411 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 239 transitions. Word has length 65 [2020-09-24 18:30:03,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:03,411 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 239 transitions. [2020-09-24 18:30:03,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:30:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 239 transitions. [2020-09-24 18:30:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 18:30:03,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:03,416 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] [2020-09-24 18:30:03,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:30:03,416 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:03,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:03,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1560412514, now seen corresponding path program 1 times [2020-09-24 18:30:03,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:03,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806291555] [2020-09-24 18:30:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:03,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:03,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:04,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:06,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:06,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:08,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:30:08,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:30:08,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:30:08,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:30:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:30:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:30:08,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:08,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:30:08,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:08,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:08,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 18:30:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:08,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:08,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:30:08,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:08,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:08,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:30:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:08,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:08,525 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 18:30:08,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806291555] [2020-09-24 18:30:08,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:08,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:30:08,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403152261] [2020-09-24 18:30:08,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:30:08,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:08,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:30:08,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:30:08,529 INFO L87 Difference]: Start difference. First operand 212 states and 239 transitions. Second operand 6 states. [2020-09-24 18:30:08,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:08,791 INFO L93 Difference]: Finished difference Result 443 states and 500 transitions. [2020-09-24 18:30:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:30:08,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-24 18:30:08,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:08,794 INFO L225 Difference]: With dead ends: 443 [2020-09-24 18:30:08,794 INFO L226 Difference]: Without dead ends: 301 [2020-09-24 18:30:08,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:08,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-09-24 18:30:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 221. [2020-09-24 18:30:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-09-24 18:30:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 249 transitions. [2020-09-24 18:30:08,811 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 249 transitions. Word has length 67 [2020-09-24 18:30:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:08,811 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 249 transitions. [2020-09-24 18:30:08,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:30:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 249 transitions. [2020-09-24 18:30:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 18:30:08,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:08,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:08,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:30:08,814 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:08,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:08,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1978313944, now seen corresponding path program 1 times [2020-09-24 18:30:08,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:08,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519381709] [2020-09-24 18:30:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:08,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:09,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:13,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:13,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 18:30:13,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:30:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:30:13,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:30:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 18:30:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:30:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:13,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:13,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:13,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:30:13,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:13,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:13,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:30:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:13,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:13,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:30:13,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:13,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:30:13,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:13,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:13,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:30:13,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:13,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:13,914 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 18:30:13,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519381709] [2020-09-24 18:30:13,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:13,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:30:13,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963776372] [2020-09-24 18:30:13,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:30:13,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:13,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:30:13,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:30:13,918 INFO L87 Difference]: Start difference. First operand 221 states and 249 transitions. Second operand 5 states. [2020-09-24 18:30:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:14,133 INFO L93 Difference]: Finished difference Result 373 states and 421 transitions. [2020-09-24 18:30:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:30:14,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-09-24 18:30:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:14,136 INFO L225 Difference]: With dead ends: 373 [2020-09-24 18:30:14,136 INFO L226 Difference]: Without dead ends: 229 [2020-09-24 18:30:14,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:30:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-24 18:30:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2020-09-24 18:30:14,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-09-24 18:30:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 251 transitions. [2020-09-24 18:30:14,144 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 251 transitions. Word has length 71 [2020-09-24 18:30:14,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:14,144 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 251 transitions. [2020-09-24 18:30:14,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:30:14,145 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 251 transitions. [2020-09-24 18:30:14,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 18:30:14,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:14,146 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 18:30:14,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:30:14,146 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:14,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:14,147 INFO L82 PathProgramCache]: Analyzing trace with hash -272178825, now seen corresponding path program 1 times [2020-09-24 18:30:14,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:14,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413995024] [2020-09-24 18:30:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:14,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:15,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:19,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:19,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:30:19,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:30:19,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:30:19,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:30:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:30:19,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:19,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:19,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:19,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:19,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:30:19,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:19,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:19,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:19,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:19,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:19,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:19,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:19,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:30:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:19,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:19,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:19,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:30:19,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:19,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:19,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:30:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:19,211 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 18:30:19,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413995024] [2020-09-24 18:30:19,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:19,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:30:19,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999593382] [2020-09-24 18:30:19,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:30:19,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:19,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:30:19,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:30:19,213 INFO L87 Difference]: Start difference. First operand 223 states and 251 transitions. Second operand 4 states. [2020-09-24 18:30:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:19,445 INFO L93 Difference]: Finished difference Result 388 states and 436 transitions. [2020-09-24 18:30:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:30:19,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-09-24 18:30:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:19,449 INFO L225 Difference]: With dead ends: 388 [2020-09-24 18:30:19,449 INFO L226 Difference]: Without dead ends: 223 [2020-09-24 18:30:19,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:30:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-09-24 18:30:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-09-24 18:30:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-09-24 18:30:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 248 transitions. [2020-09-24 18:30:19,458 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 248 transitions. Word has length 72 [2020-09-24 18:30:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:19,458 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 248 transitions. [2020-09-24 18:30:19,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:30:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 248 transitions. [2020-09-24 18:30:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 18:30:19,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:19,459 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 18:30:19,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:30:19,460 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:19,460 INFO L82 PathProgramCache]: Analyzing trace with hash 588909148, now seen corresponding path program 1 times [2020-09-24 18:30:19,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:19,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76263567] [2020-09-24 18:30:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:19,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:19,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:22,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:24,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:24,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:30:24,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 18:30:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:30:24,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:30:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:30:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 18:30:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:24,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:30:24,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:24,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:24,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:30:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:24,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:24,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:24,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:30:24,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:24,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:24,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:24,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:24,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:30:24,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:24,590 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 18:30:24,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76263567] [2020-09-24 18:30:24,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:24,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:30:24,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130632285] [2020-09-24 18:30:24,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:30:24,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:24,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:30:24,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:24,598 INFO L87 Difference]: Start difference. First operand 223 states and 248 transitions. Second operand 8 states. [2020-09-24 18:30:25,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:25,133 INFO L93 Difference]: Finished difference Result 512 states and 571 transitions. [2020-09-24 18:30:25,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:30:25,134 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-09-24 18:30:25,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:25,137 INFO L225 Difference]: With dead ends: 512 [2020-09-24 18:30:25,138 INFO L226 Difference]: Without dead ends: 362 [2020-09-24 18:30:25,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:30:25,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-09-24 18:30:25,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 242. [2020-09-24 18:30:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-24 18:30:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 270 transitions. [2020-09-24 18:30:25,154 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 270 transitions. Word has length 72 [2020-09-24 18:30:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:25,155 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 270 transitions. [2020-09-24 18:30:25,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:30:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 270 transitions. [2020-09-24 18:30:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 18:30:25,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:25,156 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] [2020-09-24 18:30:25,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:30:25,157 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:25,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:25,157 INFO L82 PathProgramCache]: Analyzing trace with hash 69190993, now seen corresponding path program 1 times [2020-09-24 18:30:25,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:25,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37057124] [2020-09-24 18:30:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:25,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:27,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:27,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 18:30:27,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:30:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1974 [2020-09-24 18:30:27,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:30:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:30:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 18:30:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:27,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:27,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:27,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:27,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:30:27,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:27,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:27,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:27,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 18:30:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:27,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:27,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:27,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:30:27,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:27,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:30:27,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:27,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:27,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:30:27,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 18:30:27,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37057124] [2020-09-24 18:30:27,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:27,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:30:27,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255738458] [2020-09-24 18:30:27,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:30:27,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:27,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:30:27,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:27,301 INFO L87 Difference]: Start difference. First operand 242 states and 270 transitions. Second operand 8 states. [2020-09-24 18:30:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:27,753 INFO L93 Difference]: Finished difference Result 332 states and 370 transitions. [2020-09-24 18:30:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:30:27,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-09-24 18:30:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:27,756 INFO L225 Difference]: With dead ends: 332 [2020-09-24 18:30:27,756 INFO L226 Difference]: Without dead ends: 330 [2020-09-24 18:30:27,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:30:27,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-09-24 18:30:27,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 297. [2020-09-24 18:30:27,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-09-24 18:30:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 332 transitions. [2020-09-24 18:30:27,768 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 332 transitions. Word has length 73 [2020-09-24 18:30:27,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:27,768 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 332 transitions. [2020-09-24 18:30:27,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:30:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 332 transitions. [2020-09-24 18:30:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 18:30:27,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:27,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:27,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:30:27,771 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:27,772 INFO L82 PathProgramCache]: Analyzing trace with hash 926827883, now seen corresponding path program 1 times [2020-09-24 18:30:27,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:27,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316449937] [2020-09-24 18:30:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:27,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:27,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:27,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:30,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking...