/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 11:58:16,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 11:58:16,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 11:58:16,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 11:58:16,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 11:58:16,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 11:58:16,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 11:58:16,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 11:58:16,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 11:58:16,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 11:58:16,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 11:58:16,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 11:58:16,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 11:58:16,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 11:58:16,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 11:58:16,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 11:58:16,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 11:58:16,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 11:58:16,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 11:58:16,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 11:58:16,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 11:58:16,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 11:58:16,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 11:58:16,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 11:58:16,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 11:58:16,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 11:58:16,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 11:58:16,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 11:58:16,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 11:58:16,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 11:58:16,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 11:58:16,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 11:58:16,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 11:58:16,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 11:58:16,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 11:58:16,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 11:58:16,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 11:58:16,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 11:58:16,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 11:58:16,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 11:58:16,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 11:58:16,337 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 [2020-10-29 11:58:16,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 11:58:16,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 11:58:16,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 11:58:16,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 11:58:16,397 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 11:58:16,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 11:58:16,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 11:58:16,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 11:58:16,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 11:58:16,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 11:58:16,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 11:58:16,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 11:58:16,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 11:58:16,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 11:58:16,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 11:58:16,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 11:58:16,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 11:58:16,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 11:58:16,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 11:58:16,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 11:58:16,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 11:58:16,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 11:58:16,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 11:58:16,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 11:58:16,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 11:58:16,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 11:58:16,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 11:58:16,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 11:58:16,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 11:58:16,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 11:58:16,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 11:58:16,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 11:58:16,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 11:58:16,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 11:58:16,857 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 11:58:16,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-10-29 11:58:16,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8131a592/a78e4d36e3584c13aea51f519cf82166/FLAGd251bdc08 [2020-10-29 11:58:17,655 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 11:58:17,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-10-29 11:58:17,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8131a592/a78e4d36e3584c13aea51f519cf82166/FLAGd251bdc08 [2020-10-29 11:58:17,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8131a592/a78e4d36e3584c13aea51f519cf82166 [2020-10-29 11:58:17,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 11:58:17,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 11:58:17,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 11:58:17,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 11:58:17,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 11:58:17,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 11:58:17" (1/1) ... [2020-10-29 11:58:17,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ddaac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:17, skipping insertion in model container [2020-10-29 11:58:17,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 11:58:17" (1/1) ... [2020-10-29 11:58:18,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 11:58:18,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 11:58:18,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 11:58:18,250 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 11:58:18,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 11:58:18,339 INFO L208 MainTranslator]: Completed translation [2020-10-29 11:58:18,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:18 WrapperNode [2020-10-29 11:58:18,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 11:58:18,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 11:58:18,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 11:58:18,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 11:58:18,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:18" (1/1) ... [2020-10-29 11:58:18,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:18" (1/1) ... [2020-10-29 11:58:18,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:18" (1/1) ... [2020-10-29 11:58:18,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:18" (1/1) ... [2020-10-29 11:58:18,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:18" (1/1) ... [2020-10-29 11:58:18,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:18" (1/1) ... [2020-10-29 11:58:18,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:18" (1/1) ... [2020-10-29 11:58:18,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 11:58:18,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 11:58:18,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 11:58:18,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 11:58:18,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:18" (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 [2020-10-29 11:58:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 11:58:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 11:58:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 11:58:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 11:58:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 11:58:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 11:58:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 11:58:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 11:58:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 11:58:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 11:58:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 11:58:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 11:58:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 11:58:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 11:58:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 11:58:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 11:58:19,293 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 11:58:19,293 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-29 11:58:19,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 11:58:19 BoogieIcfgContainer [2020-10-29 11:58:19,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 11:58:19,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 11:58:19,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 11:58:19,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 11:58:19,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 11:58:17" (1/3) ... [2020-10-29 11:58:19,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e036f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 11:58:19, skipping insertion in model container [2020-10-29 11:58:19,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:18" (2/3) ... [2020-10-29 11:58:19,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e036f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 11:58:19, skipping insertion in model container [2020-10-29 11:58:19,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 11:58:19" (3/3) ... [2020-10-29 11:58:19,309 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-10-29 11:58:19,324 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 11:58:19,330 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 11:58:19,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 11:58:19,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 11:58:19,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 11:58:19,392 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 11:58:19,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 11:58:19,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 11:58:19,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 11:58:19,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 11:58:19,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 11:58:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-10-29 11:58:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 11:58:19,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:19,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:19,436 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:19,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:19,447 INFO L82 PathProgramCache]: Analyzing trace with hash 977275202, now seen corresponding path program 1 times [2020-10-29 11:58:19,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:19,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139535514] [2020-10-29 11:58:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:19,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:19,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:19,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 11:58:19,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:19,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 11:58:19,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:19,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 11:58:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:19,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 11:58:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:19,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:19,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:19,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:19,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 11:58:19,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:19,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 11:58:20,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139535514] [2020-10-29 11:58:20,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:20,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 11:58:20,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211652512] [2020-10-29 11:58:20,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 11:58:20,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:20,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 11:58:20,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 11:58:20,045 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-10-29 11:58:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:20,145 INFO L93 Difference]: Finished difference Result 141 states and 256 transitions. [2020-10-29 11:58:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 11:58:20,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-29 11:58:20,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:20,163 INFO L225 Difference]: With dead ends: 141 [2020-10-29 11:58:20,163 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 11:58:20,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 11:58:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 11:58:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-29 11:58:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 11:58:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 92 transitions. [2020-10-29 11:58:20,263 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 92 transitions. Word has length 14 [2020-10-29 11:58:20,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:20,264 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 92 transitions. [2020-10-29 11:58:20,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 11:58:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 92 transitions. [2020-10-29 11:58:20,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 11:58:20,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:20,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:20,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 11:58:20,266 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:20,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:20,267 INFO L82 PathProgramCache]: Analyzing trace with hash -441817252, now seen corresponding path program 1 times [2020-10-29 11:58:20,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:20,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726093452] [2020-10-29 11:58:20,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:20,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:20,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:20,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:20,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:20,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 11:58:20,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 11:58:20,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 11:58:20,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:20,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:20,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:20,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 11:58:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 11:58:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:20,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:20,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:20,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:20,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:20,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 11:58:20,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:20,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:20,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 11:58:20,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726093452] [2020-10-29 11:58:20,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:20,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:20,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091120186] [2020-10-29 11:58:20,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:20,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:20,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:20,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:20,676 INFO L87 Difference]: Start difference. First operand 62 states and 92 transitions. Second operand 4 states. [2020-10-29 11:58:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:20,980 INFO L93 Difference]: Finished difference Result 168 states and 259 transitions. [2020-10-29 11:58:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:20,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 11:58:20,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:20,984 INFO L225 Difference]: With dead ends: 168 [2020-10-29 11:58:20,984 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 11:58:20,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 11:58:21,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2020-10-29 11:58:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 11:58:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 156 transitions. [2020-10-29 11:58:21,004 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 156 transitions. Word has length 15 [2020-10-29 11:58:21,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:21,005 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 156 transitions. [2020-10-29 11:58:21,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:21,005 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 156 transitions. [2020-10-29 11:58:21,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 11:58:21,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:21,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:21,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 11:58:21,007 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:21,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:21,007 INFO L82 PathProgramCache]: Analyzing trace with hash -456687803, now seen corresponding path program 1 times [2020-10-29 11:58:21,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:21,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812007723] [2020-10-29 11:58:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:21,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:21,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:21,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 11:58:21,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 11:58:21,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 11:58:21,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:21,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:21,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:21,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 11:58:21,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 11:58:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:21,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:21,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:21,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:21,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 11:58:21,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:21,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:21,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 11:58:21,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812007723] [2020-10-29 11:58:21,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:21,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:21,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923810749] [2020-10-29 11:58:21,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:21,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:21,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:21,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:21,183 INFO L87 Difference]: Start difference. First operand 103 states and 156 transitions. Second operand 4 states. [2020-10-29 11:58:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:21,414 INFO L93 Difference]: Finished difference Result 205 states and 313 transitions. [2020-10-29 11:58:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:21,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-29 11:58:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:21,416 INFO L225 Difference]: With dead ends: 205 [2020-10-29 11:58:21,417 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 11:58:21,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 11:58:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2020-10-29 11:58:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 11:58:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 157 transitions. [2020-10-29 11:58:21,432 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 157 transitions. Word has length 16 [2020-10-29 11:58:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:21,432 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 157 transitions. [2020-10-29 11:58:21,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 157 transitions. [2020-10-29 11:58:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 11:58:21,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:21,434 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:21,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 11:58:21,434 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:21,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1484837250, now seen corresponding path program 1 times [2020-10-29 11:58:21,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:21,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145256666] [2020-10-29 11:58:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:21,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:21,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 11:58:21,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:21,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 11:58:21,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:21,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 11:58:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 11:58:21,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:21,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:21,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:21,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:21,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 11:58:21,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:21,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 11:58:21,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145256666] [2020-10-29 11:58:21,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:21,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:21,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377885303] [2020-10-29 11:58:21,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:21,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:21,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:21,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:21,568 INFO L87 Difference]: Start difference. First operand 105 states and 157 transitions. Second operand 4 states. [2020-10-29 11:58:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:21,699 INFO L93 Difference]: Finished difference Result 190 states and 287 transitions. [2020-10-29 11:58:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:21,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-29 11:58:21,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:21,701 INFO L225 Difference]: With dead ends: 190 [2020-10-29 11:58:21,701 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 11:58:21,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 11:58:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-29 11:58:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 11:58:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 133 transitions. [2020-10-29 11:58:21,714 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 133 transitions. Word has length 21 [2020-10-29 11:58:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:21,714 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 133 transitions. [2020-10-29 11:58:21,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 133 transitions. [2020-10-29 11:58:21,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 11:58:21,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:21,716 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 11:58:21,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 11:58:21,716 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:21,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:21,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1356324910, now seen corresponding path program 1 times [2020-10-29 11:58:21,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:21,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129064451] [2020-10-29 11:58:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:21,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:21,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:21,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 11:58:21,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 11:58:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 11:58:21,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:21,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 11:58:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 11:58:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:21,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:21,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:21,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:21,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:21,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 11:58:21,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:21,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 11:58:21,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129064451] [2020-10-29 11:58:21,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:21,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:21,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432147145] [2020-10-29 11:58:21,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:21,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:21,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:21,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:21,876 INFO L87 Difference]: Start difference. First operand 92 states and 133 transitions. Second operand 4 states. [2020-10-29 11:58:22,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:22,050 INFO L93 Difference]: Finished difference Result 181 states and 264 transitions. [2020-10-29 11:58:22,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:22,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-29 11:58:22,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:22,052 INFO L225 Difference]: With dead ends: 181 [2020-10-29 11:58:22,053 INFO L226 Difference]: Without dead ends: 101 [2020-10-29 11:58:22,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-29 11:58:22,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-10-29 11:58:22,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 11:58:22,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 141 transitions. [2020-10-29 11:58:22,065 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 141 transitions. Word has length 26 [2020-10-29 11:58:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:22,066 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 141 transitions. [2020-10-29 11:58:22,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 141 transitions. [2020-10-29 11:58:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 11:58:22,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:22,068 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:22,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 11:58:22,068 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:22,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:22,069 INFO L82 PathProgramCache]: Analyzing trace with hash -951573711, now seen corresponding path program 1 times [2020-10-29 11:58:22,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:22,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938869460] [2020-10-29 11:58:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:22,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:22,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 11:58:22,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 11:58:22,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:22,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 11:58:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 11:58:22,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:22,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:22,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:22,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:22,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:22,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 11:58:22,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:22,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 11:58:22,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938869460] [2020-10-29 11:58:22,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:22,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:22,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28072333] [2020-10-29 11:58:22,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:22,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:22,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:22,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:22,265 INFO L87 Difference]: Start difference. First operand 100 states and 141 transitions. Second operand 4 states. [2020-10-29 11:58:22,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:22,412 INFO L93 Difference]: Finished difference Result 166 states and 236 transitions. [2020-10-29 11:58:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:22,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-29 11:58:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:22,414 INFO L225 Difference]: With dead ends: 166 [2020-10-29 11:58:22,414 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 11:58:22,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 11:58:22,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-29 11:58:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 11:58:22,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2020-10-29 11:58:22,424 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 37 [2020-10-29 11:58:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:22,425 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2020-10-29 11:58:22,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:22,425 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2020-10-29 11:58:22,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 11:58:22,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:22,427 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 11:58:22,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 11:58:22,427 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:22,428 INFO L82 PathProgramCache]: Analyzing trace with hash 2067843122, now seen corresponding path program 1 times [2020-10-29 11:58:22,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:22,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530196079] [2020-10-29 11:58:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:22,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:22,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:22,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 11:58:22,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 11:58:22,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:22,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 11:58:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 11:58:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 11:58:22,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:22,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:22,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:22,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:22,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 11:58:22,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:22,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:22,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 11:58:22,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530196079] [2020-10-29 11:58:22,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:22,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 11:58:22,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069625520] [2020-10-29 11:58:22,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 11:58:22,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:22,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 11:58:22,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:22,637 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand 5 states. [2020-10-29 11:58:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:22,966 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2020-10-29 11:58:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 11:58:22,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-29 11:58:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:22,968 INFO L225 Difference]: With dead ends: 81 [2020-10-29 11:58:22,968 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 11:58:22,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 11:58:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 11:58:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 11:58:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 11:58:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 11:58:22,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-10-29 11:58:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:22,970 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 11:58:22,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 11:58:22,970 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 11:58:22,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 11:58:22,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 11:58:22,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 11:58:23,218 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 17 [2020-10-29 11:58:23,365 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-29 11:58:23,366 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-29 11:58:23,366 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-29 11:58:23,366 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-29 11:58:23,366 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 11:58:23,367 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_close~0 |old(~m_close~0)|) (= |old(#valid)| |#valid|) (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~m_flush~0 |old(~m_flush~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-29 11:58:23,367 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 11:58:23,367 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 11:58:23,367 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 11:58:23,367 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 11:58:23,367 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 11:58:23,367 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 15 346) no Hoare annotation was computed. [2020-10-29 11:58:23,367 INFO L274 CegarLoopResult]: For program point L36(lines 36 51) no Hoare annotation was computed. [2020-10-29 11:58:23,368 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 15 346) no Hoare annotation was computed. [2020-10-29 11:58:23,368 INFO L274 CegarLoopResult]: For program point L38(lines 38 49) no Hoare annotation was computed. [2020-10-29 11:58:23,368 INFO L274 CegarLoopResult]: For program point L88(lines 88 103) no Hoare annotation was computed. [2020-10-29 11:58:23,368 INFO L274 CegarLoopResult]: For program point L55(lines 55 106) no Hoare annotation was computed. [2020-10-29 11:58:23,368 INFO L274 CegarLoopResult]: For program point L204(lines 204 219) no Hoare annotation was computed. [2020-10-29 11:58:23,368 INFO L274 CegarLoopResult]: For program point L72(lines 72 87) no Hoare annotation was computed. [2020-10-29 11:58:23,368 INFO L274 CegarLoopResult]: For program point L320(lines 320 335) no Hoare annotation was computed. [2020-10-29 11:58:23,368 INFO L274 CegarLoopResult]: For program point L188(lines 188 203) no Hoare annotation was computed. [2020-10-29 11:58:23,369 INFO L274 CegarLoopResult]: For program point L56(lines 56 71) no Hoare annotation was computed. [2020-10-29 11:58:23,369 INFO L270 CegarLoopResult]: At program point L337(lines 25 341) the Hoare annotation is: (or (= main_~q~0 0) (and (= main_~this_sink~0 0) (= main_~q~0 2)) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0)))) [2020-10-29 11:58:23,369 INFO L274 CegarLoopResult]: For program point L304(lines 304 319) no Hoare annotation was computed. [2020-10-29 11:58:23,369 INFO L274 CegarLoopResult]: For program point L172(lines 172 187) no Hoare annotation was computed. [2020-10-29 11:58:23,369 INFO L274 CegarLoopResult]: For program point L288(lines 288 303) no Hoare annotation was computed. [2020-10-29 11:58:23,369 INFO L274 CegarLoopResult]: For program point L156(lines 156 171) no Hoare annotation was computed. [2020-10-29 11:58:23,369 INFO L274 CegarLoopResult]: For program point L90(lines 90 101) no Hoare annotation was computed. [2020-10-29 11:58:23,370 INFO L274 CegarLoopResult]: For program point L272(lines 272 287) no Hoare annotation was computed. [2020-10-29 11:58:23,370 INFO L274 CegarLoopResult]: For program point L206(lines 206 217) no Hoare annotation was computed. [2020-10-29 11:58:23,370 INFO L274 CegarLoopResult]: For program point L140(lines 140 155) no Hoare annotation was computed. [2020-10-29 11:58:23,370 INFO L274 CegarLoopResult]: For program point L107(lines 107 222) no Hoare annotation was computed. [2020-10-29 11:58:23,370 INFO L274 CegarLoopResult]: For program point L74(lines 74 85) no Hoare annotation was computed. [2020-10-29 11:58:23,370 INFO L274 CegarLoopResult]: For program point L322(lines 322 333) no Hoare annotation was computed. [2020-10-29 11:58:23,370 INFO L274 CegarLoopResult]: For program point L256(lines 256 271) no Hoare annotation was computed. [2020-10-29 11:58:23,370 INFO L274 CegarLoopResult]: For program point L223(lines 223 338) no Hoare annotation was computed. [2020-10-29 11:58:23,371 INFO L274 CegarLoopResult]: For program point L190(lines 190 201) no Hoare annotation was computed. [2020-10-29 11:58:23,371 INFO L274 CegarLoopResult]: For program point L124(lines 124 139) no Hoare annotation was computed. [2020-10-29 11:58:23,371 INFO L274 CegarLoopResult]: For program point L58(lines 58 69) no Hoare annotation was computed. [2020-10-29 11:58:23,371 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 341) the Hoare annotation is: (or (and (= main_~q~0 0) (= main_~this_sink~0 0)) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0)))) [2020-10-29 11:58:23,371 INFO L274 CegarLoopResult]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2020-10-29 11:58:23,371 INFO L274 CegarLoopResult]: For program point L306(lines 306 317) no Hoare annotation was computed. [2020-10-29 11:58:23,371 INFO L274 CegarLoopResult]: For program point L240(lines 240 255) no Hoare annotation was computed. [2020-10-29 11:58:23,372 INFO L274 CegarLoopResult]: For program point L174(lines 174 185) no Hoare annotation was computed. [2020-10-29 11:58:23,372 INFO L274 CegarLoopResult]: For program point L108(lines 108 123) no Hoare annotation was computed. [2020-10-29 11:58:23,372 INFO L274 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2020-10-29 11:58:23,372 INFO L274 CegarLoopResult]: For program point L290(lines 290 301) no Hoare annotation was computed. [2020-10-29 11:58:23,372 INFO L274 CegarLoopResult]: For program point L224(lines 224 239) no Hoare annotation was computed. [2020-10-29 11:58:23,372 INFO L274 CegarLoopResult]: For program point L158(lines 158 169) no Hoare annotation was computed. [2020-10-29 11:58:23,372 INFO L274 CegarLoopResult]: For program point L274(lines 274 285) no Hoare annotation was computed. [2020-10-29 11:58:23,372 INFO L274 CegarLoopResult]: For program point L142(lines 142 153) no Hoare annotation was computed. [2020-10-29 11:58:23,372 INFO L274 CegarLoopResult]: For program point L258(lines 258 269) no Hoare annotation was computed. [2020-10-29 11:58:23,372 INFO L274 CegarLoopResult]: For program point L126(lines 126 137) no Hoare annotation was computed. [2020-10-29 11:58:23,373 INFO L274 CegarLoopResult]: For program point L242(lines 242 253) no Hoare annotation was computed. [2020-10-29 11:58:23,373 INFO L274 CegarLoopResult]: For program point L110(lines 110 121) no Hoare annotation was computed. [2020-10-29 11:58:23,373 INFO L274 CegarLoopResult]: For program point L226(lines 226 237) no Hoare annotation was computed. [2020-10-29 11:58:23,373 INFO L274 CegarLoopResult]: For program point L94(lines 94 96) no Hoare annotation was computed. [2020-10-29 11:58:23,373 INFO L274 CegarLoopResult]: For program point L210(lines 210 212) no Hoare annotation was computed. [2020-10-29 11:58:23,373 INFO L274 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-10-29 11:58:23,373 INFO L274 CegarLoopResult]: For program point L326(lines 326 328) no Hoare annotation was computed. [2020-10-29 11:58:23,373 INFO L274 CegarLoopResult]: For program point L194(lines 194 196) no Hoare annotation was computed. [2020-10-29 11:58:23,374 INFO L274 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-10-29 11:58:23,374 INFO L274 CegarLoopResult]: For program point L310(lines 310 312) no Hoare annotation was computed. [2020-10-29 11:58:23,374 INFO L274 CegarLoopResult]: For program point L178(lines 178 180) no Hoare annotation was computed. [2020-10-29 11:58:23,374 INFO L270 CegarLoopResult]: At program point L327(lines 15 346) the Hoare annotation is: false [2020-10-29 11:58:23,374 INFO L274 CegarLoopResult]: For program point L294(lines 294 296) no Hoare annotation was computed. [2020-10-29 11:58:23,374 INFO L274 CegarLoopResult]: For program point L162(lines 162 164) no Hoare annotation was computed. [2020-10-29 11:58:23,374 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 15 346) the Hoare annotation is: true [2020-10-29 11:58:23,375 INFO L274 CegarLoopResult]: For program point L278(lines 278 280) no Hoare annotation was computed. [2020-10-29 11:58:23,375 INFO L274 CegarLoopResult]: For program point L146(lines 146 148) no Hoare annotation was computed. [2020-10-29 11:58:23,375 INFO L274 CegarLoopResult]: For program point L262(lines 262 264) no Hoare annotation was computed. [2020-10-29 11:58:23,375 INFO L274 CegarLoopResult]: For program point L130(lines 130 132) no Hoare annotation was computed. [2020-10-29 11:58:23,375 INFO L274 CegarLoopResult]: For program point L345(line 345) no Hoare annotation was computed. [2020-10-29 11:58:23,375 INFO L274 CegarLoopResult]: For program point L246(lines 246 248) no Hoare annotation was computed. [2020-10-29 11:58:23,375 INFO L274 CegarLoopResult]: For program point L114(lines 114 116) no Hoare annotation was computed. [2020-10-29 11:58:23,375 INFO L274 CegarLoopResult]: For program point L230(lines 230 232) no Hoare annotation was computed. [2020-10-29 11:58:23,376 INFO L274 CegarLoopResult]: For program point L35(lines 35 54) no Hoare annotation was computed. [2020-10-29 11:58:23,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 11:58:23 BoogieIcfgContainer [2020-10-29 11:58:23,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 11:58:23,397 INFO L168 Benchmark]: Toolchain (without parser) took 5414.87 ms. Allocated memory was 125.8 MB in the beginning and 191.9 MB in the end (delta: 66.1 MB). Free memory was 101.0 MB in the beginning and 89.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 79.0 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:23,398 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 125.8 MB. Free memory is still 85.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 11:58:23,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.81 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 88.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:23,400 INFO L168 Benchmark]: Boogie Preprocessor took 55.39 ms. Allocated memory is still 125.8 MB. Free memory was 88.4 MB in the beginning and 86.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:23,401 INFO L168 Benchmark]: RCFGBuilder took 899.71 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 86.3 MB in the beginning and 127.5 MB in the end (delta: -41.2 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:23,401 INFO L168 Benchmark]: TraceAbstraction took 4095.36 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 127.0 MB in the beginning and 89.5 MB in the end (delta: 37.5 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:23,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 125.8 MB. Free memory is still 85.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 350.81 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 88.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.39 ms. Allocated memory is still 125.8 MB. Free memory was 88.4 MB in the beginning and 86.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 899.71 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 86.3 MB in the beginning and 127.5 MB in the end (delta: -41.2 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4095.36 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 127.0 MB in the beginning and 89.5 MB in the end (delta: 37.5 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 || (this_sink == 0 && q == 2)) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 560 SDtfs, 817 SDslu, 48 SDs, 0 SdLazy, 384 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 99 HoareAnnotationTreeSize, 14 FomulaSimplifications, 245 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 298 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 16702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 25/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...