/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/loop-acceleration/array_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:53:40,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:53:40,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:53:40,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:53:40,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:53:40,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:53:40,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:53:40,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:53:40,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:53:40,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:53:40,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:53:40,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:53:40,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:53:40,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:53:40,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:53:40,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:53:40,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:53:40,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:53:40,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:53:40,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:53:40,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:53:40,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:53:40,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:53:40,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:53:40,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:53:40,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:53:40,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:53:40,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:53:40,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:53:40,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:53:40,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:53:40,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:53:40,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:53:40,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:53:40,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:53:40,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:53:40,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:53:40,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:53:40,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:53:40,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:53:40,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:53:40,493 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 [2020-10-28 14:53:40,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:53:40,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:53:40,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:53:40,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:53:40,553 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:53:40,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:53:40,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:53:40,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:53:40,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:53:40,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:53:40,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:53:40,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:53:40,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:53:40,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:53:40,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:53:40,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:53:40,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:53:40,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:53:40,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:53:40,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:53:40,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:53:40,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:53:40,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:53:40,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:53:40,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:53:40,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:53:40,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:53:40,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:53:40,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:53:40,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:53:40,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:53:41,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:53:41,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:53:41,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:53:41,053 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:53:41,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_1-2.c [2020-10-28 14:53:41,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3564c84c6/3aaebff16f6d47c19ce3a06c23017b74/FLAG7b0669936 [2020-10-28 14:53:41,685 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:53:41,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/array_1-2.c [2020-10-28 14:53:41,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3564c84c6/3aaebff16f6d47c19ce3a06c23017b74/FLAG7b0669936 [2020-10-28 14:53:42,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3564c84c6/3aaebff16f6d47c19ce3a06c23017b74 [2020-10-28 14:53:42,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:53:42,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:53:42,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:53:42,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:53:42,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:53:42,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:53:42" (1/1) ... [2020-10-28 14:53:42,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b983bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42, skipping insertion in model container [2020-10-28 14:53:42,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:53:42" (1/1) ... [2020-10-28 14:53:42,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:53:42,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:53:42,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:53:42,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:53:42,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:53:42,425 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:53:42,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42 WrapperNode [2020-10-28 14:53:42,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:53:42,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:53:42,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:53:42,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:53:42,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42" (1/1) ... [2020-10-28 14:53:42,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42" (1/1) ... [2020-10-28 14:53:42,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42" (1/1) ... [2020-10-28 14:53:42,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42" (1/1) ... [2020-10-28 14:53:42,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42" (1/1) ... [2020-10-28 14:53:42,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42" (1/1) ... [2020-10-28 14:53:42,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42" (1/1) ... [2020-10-28 14:53:42,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:53:42,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:53:42,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:53:42,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:53:42,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42" (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 [2020-10-28 14:53:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:53:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:53:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:53:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 14:53:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:53:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:53:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:53:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:53:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:53:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 14:53:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:53:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:53:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:53:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:53:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:53:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:53:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:53:42,898 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:53:42,898 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:53:42,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:53:42 BoogieIcfgContainer [2020-10-28 14:53:42,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:53:42,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:53:42,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:53:42,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:53:42,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:53:42" (1/3) ... [2020-10-28 14:53:42,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfc81b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:53:42, skipping insertion in model container [2020-10-28 14:53:42,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:53:42" (2/3) ... [2020-10-28 14:53:42,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfc81b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:53:42, skipping insertion in model container [2020-10-28 14:53:42,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:53:42" (3/3) ... [2020-10-28 14:53:42,911 INFO L111 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2020-10-28 14:53:42,925 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:53:42,930 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:53:42,957 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:53:42,998 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:53:42,999 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:53:42,999 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:53:42,999 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:53:42,999 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:53:42,999 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:53:43,000 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:53:43,000 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:53:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-28 14:53:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 14:53:43,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:53:43,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:53:43,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:53:43,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:53:43,048 INFO L82 PathProgramCache]: Analyzing trace with hash 665310781, now seen corresponding path program 1 times [2020-10-28 14:53:43,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:53:43,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731492743] [2020-10-28 14:53:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:53:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:43,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:43,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:53:43,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 14:53:43,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:43,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:43,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:43,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:53:43,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:53:43,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:53:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:43,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:43,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:53:43,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:43,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:53:43,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:43,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:53:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:53:43,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731492743] [2020-10-28 14:53:43,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:53:43,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:53:43,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595371842] [2020-10-28 14:53:43,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:53:43,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:43,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:53:43,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:53:43,638 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-10-28 14:53:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:53:43,723 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-28 14:53:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:53:43,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-28 14:53:43,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:53:43,734 INFO L225 Difference]: With dead ends: 39 [2020-10-28 14:53:43,734 INFO L226 Difference]: Without dead ends: 15 [2020-10-28 14:53:43,738 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 [2020-10-28 14:53:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-28 14:53:43,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-28 14:53:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-28 14:53:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-28 14:53:43,782 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-10-28 14:53:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:53:43,783 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-28 14:53:43,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:53:43,783 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-28 14:53:43,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 14:53:43,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:53:43,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:53:43,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:53:43,785 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:53:43,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:53:43,786 INFO L82 PathProgramCache]: Analyzing trace with hash -364744009, now seen corresponding path program 1 times [2020-10-28 14:53:43,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:53:43,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745668162] [2020-10-28 14:53:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:53:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:43,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:43,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:53:43,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 14:53:43,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:43,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:53:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:53:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:53:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:53:44,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:53:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:44,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:44,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:44,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:53:44,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:44,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:53:44,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:44,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:44,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:53:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:53:44,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745668162] [2020-10-28 14:53:44,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:53:44,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:53:44,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372839392] [2020-10-28 14:53:44,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:53:44,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:44,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:53:44,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:53:44,087 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-10-28 14:53:44,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:53:44,143 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-28 14:53:44,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:53:44,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-28 14:53:44,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:53:44,145 INFO L225 Difference]: With dead ends: 24 [2020-10-28 14:53:44,145 INFO L226 Difference]: Without dead ends: 17 [2020-10-28 14:53:44,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:53:44,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-28 14:53:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-28 14:53:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-28 14:53:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-28 14:53:44,155 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-10-28 14:53:44,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:53:44,155 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-28 14:53:44,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:53:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-28 14:53:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 14:53:44,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:53:44,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:53:44,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:53:44,157 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:53:44,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:53:44,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1375402741, now seen corresponding path program 1 times [2020-10-28 14:53:44,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:53:44,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485188607] [2020-10-28 14:53:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:53:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:44,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:44,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:44,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:53:44,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:53:44,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-28 14:53:44,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:44,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:44,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:53:44,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:53:44,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:53:44,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:53:44,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:53:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:44,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:44,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:53:44,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:53:44,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:44,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:44,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:53:44,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485188607] [2020-10-28 14:53:44,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:53:44,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 14:53:44,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773958039] [2020-10-28 14:53:44,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:53:44,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:44,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:53:44,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:53:44,542 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2020-10-28 14:53:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:53:44,593 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-28 14:53:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:53:44,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-28 14:53:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:53:44,594 INFO L225 Difference]: With dead ends: 26 [2020-10-28 14:53:44,594 INFO L226 Difference]: Without dead ends: 19 [2020-10-28 14:53:44,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:53:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-28 14:53:44,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-28 14:53:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-28 14:53:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-28 14:53:44,601 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-10-28 14:53:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:53:44,602 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-28 14:53:44,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:53:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-28 14:53:44,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 14:53:44,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:53:44,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:53:44,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:53:44,603 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:53:44,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:53:44,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1380815949, now seen corresponding path program 2 times [2020-10-28 14:53:44,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:53:44,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271632910] [2020-10-28 14:53:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:53:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:45,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:45,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 14:53:45,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:53:45,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-28 14:53:45,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:45,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:45,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:53:45,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:53:45,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:53:45,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:53:45,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:53:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:45,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:45,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:53:45,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:45,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:53:45,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:45,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:53:45,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271632910] [2020-10-28 14:53:45,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:53:45,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:53:45,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912280154] [2020-10-28 14:53:45,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:53:45,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:45,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:53:45,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:53:45,188 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2020-10-28 14:53:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:53:45,251 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-28 14:53:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:53:45,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-28 14:53:45,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:53:45,253 INFO L225 Difference]: With dead ends: 28 [2020-10-28 14:53:45,253 INFO L226 Difference]: Without dead ends: 21 [2020-10-28 14:53:45,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:53:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-28 14:53:45,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-28 14:53:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-28 14:53:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-28 14:53:45,260 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2020-10-28 14:53:45,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:53:45,260 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-28 14:53:45,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:53:45,260 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-28 14:53:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:53:45,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:53:45,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:53:45,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:53:45,262 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:53:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:53:45,262 INFO L82 PathProgramCache]: Analyzing trace with hash -112155407, now seen corresponding path program 3 times [2020-10-28 14:53:45,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:53:45,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118300713] [2020-10-28 14:53:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:53:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:45,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:45,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:45,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:53:45,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:53:45,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-28 14:53:45,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:45,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:53:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:53:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:53:45,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:45,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:53:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:53:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:53:45,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:53:45,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:53:45,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:53:45,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:53:45,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:53:45,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:53:45,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:53:45,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:53:45,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:53:45,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:53:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:53:45,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118300713] [2020-10-28 14:53:45,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:53:45,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 14:53:45,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775863239] [2020-10-28 14:53:45,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:53:45,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:53:45,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:53:45,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:53:45,912 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2020-10-28 14:53:46,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:53:46,066 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-28 14:53:46,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:53:46,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-28 14:53:46,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:53:46,067 INFO L225 Difference]: With dead ends: 20 [2020-10-28 14:53:46,067 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 14:53:46,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:53:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 14:53:46,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 14:53:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 14:53:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 14:53:46,069 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-28 14:53:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:53:46,069 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 14:53:46,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:53:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 14:53:46,069 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 14:53:46,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:53:46,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 14:53:46,253 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 14:53:46,253 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 14:53:46,254 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 14:53:46,254 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 14:53:46,254 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:53:46,254 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 14:53:46,254 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:53:46,255 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:53:46,255 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 14:53:46,255 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 14:53:46,255 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:53:46,255 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 12 21) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-28 14:53:46,255 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 12 21) no Hoare annotation was computed. [2020-10-28 14:53:46,256 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4092)))) (and (<= 1023 .cse0) (<= 1023 |main_#t~mem8|) (<= .cse0 1023) (<= |main_#t~mem8| 1023))) [2020-10-28 14:53:46,256 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-28 14:53:46,256 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 18) no Hoare annotation was computed. [2020-10-28 14:53:46,256 INFO L270 CegarLoopResult]: At program point L16-3(lines 16 18) the Hoare annotation is: (or (let ((.cse0 (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4092)))) (and (<= 1023 .cse0) (<= .cse0 1023))) (<= main_~i~0 1023)) [2020-10-28 14:53:46,256 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 12 21) no Hoare annotation was computed. [2020-10-28 14:53:46,256 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 18) no Hoare annotation was computed. [2020-10-28 14:53:46,256 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-28 14:53:46,257 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-28 14:53:46,257 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-28 14:53:46,257 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-28 14:53:46,257 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-28 14:53:46,257 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-28 14:53:46,268 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:53:46,270 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:53:46,277 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:53:46,277 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:53:46,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:53:46 BoogieIcfgContainer [2020-10-28 14:53:46,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:53:46,283 INFO L168 Benchmark]: Toolchain (without parser) took 4216.67 ms. Allocated memory was 154.1 MB in the beginning and 188.7 MB in the end (delta: 34.6 MB). Free memory was 110.0 MB in the beginning and 162.4 MB in the end (delta: -52.4 MB). Peak memory consumption was 86.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:53:46,284 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 154.1 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 101.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:53:46,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.33 ms. Allocated memory is still 154.1 MB. Free memory was 137.5 MB in the beginning and 128.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:53:46,286 INFO L168 Benchmark]: Boogie Preprocessor took 39.80 ms. Allocated memory is still 154.1 MB. Free memory was 128.3 MB in the beginning and 127.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:53:46,287 INFO L168 Benchmark]: RCFGBuilder took 432.91 ms. Allocated memory is still 154.1 MB. Free memory was 127.0 MB in the beginning and 124.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:53:46,288 INFO L168 Benchmark]: TraceAbstraction took 3376.86 ms. Allocated memory was 154.1 MB in the beginning and 188.7 MB in the end (delta: 34.6 MB). Free memory was 124.6 MB in the beginning and 162.4 MB in the end (delta: -37.7 MB). Peak memory consumption was 100.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:53:46,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 154.1 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 101.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 317.33 ms. Allocated memory is still 154.1 MB. Free memory was 137.5 MB in the beginning and 128.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.80 ms. Allocated memory is still 154.1 MB. Free memory was 128.3 MB in the beginning and 127.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 432.91 ms. Allocated memory is still 154.1 MB. Free memory was 127.0 MB in the beginning and 124.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3376.86 ms. Allocated memory was 154.1 MB in the beginning and 188.7 MB in the end (delta: 34.6 MB). Free memory was 124.6 MB in the beginning and 162.4 MB in the end (delta: -37.7 MB). Peak memory consumption was 100.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 16]: Loop Invariant [2020-10-28 14:53:46,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:53:46,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:53:46,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:53:46,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (1023 <= unknown-#memory_int-unknown[A][A + 4092] && unknown-#memory_int-unknown[A][A + 4092] <= 1023) || i <= 1023 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 25 SDslu, 76 SDs, 0 SdLazy, 126 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 21 PreInvPairs, 25 NumberOfFragments, 94 HoareAnnotationTreeSize, 21 FomulaSimplifications, 54 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 4770 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 9/14 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...