/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:43:32,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:43:32,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:43:32,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:43:32,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:43:32,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:43:32,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:43:32,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:43:32,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:43:32,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:43:32,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:43:32,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:43:32,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:43:32,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:43:32,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:43:32,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:43:32,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:43:32,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:43:32,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:43:32,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:43:32,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:43:32,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:43:32,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:43:32,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:43:32,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 18:43:32,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 18:43:32,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 18:43:32,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 18:43:32,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 18:43:32,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 18:43:32,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 18:43:32,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 18:43:32,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 18:43:32,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 18:43:32,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 18:43:32,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 18:43:32,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 18:43:32,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 18:43:32,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:43:32,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:43:32,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:43:32,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:43:32,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:43:32,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:43:32,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:43:32,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:43:32,858 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:43:32,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:43:32,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:43:32,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:43:32,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:43:32,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:43:32,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:43:32,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:43:32,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:43:32,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:43:32,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:43:32,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:43:32,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:43:32,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:43:32,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:43:32,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:43:32,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:43:32,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:43:32,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:43:32,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:43:32,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:43:32,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:43:32,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:43:32,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:43:32,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:43:32,866 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:43:33,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:43:33,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:43:33,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:43:33,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:43:33,353 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:43:33,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-10-23 18:43:33,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de989b085/00c8cc8817f34441a68bed81861823e9/FLAGc5bf561e7 [2020-10-23 18:43:34,044 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:43:34,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-10-23 18:43:34,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de989b085/00c8cc8817f34441a68bed81861823e9/FLAGc5bf561e7 [2020-10-23 18:43:34,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de989b085/00c8cc8817f34441a68bed81861823e9 [2020-10-23 18:43:34,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:43:34,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:43:34,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:34,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:43:34,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:43:34,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:34" (1/1) ... [2020-10-23 18:43:34,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e06f9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34, skipping insertion in model container [2020-10-23 18:43:34,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:34" (1/1) ... [2020-10-23 18:43:34,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:43:34,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:43:34,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:34,645 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:43:34,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:34,677 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:43:34,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34 WrapperNode [2020-10-23 18:43:34,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:34,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:43:34,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:43:34,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:43:34,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34" (1/1) ... [2020-10-23 18:43:34,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34" (1/1) ... [2020-10-23 18:43:34,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34" (1/1) ... [2020-10-23 18:43:34,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34" (1/1) ... [2020-10-23 18:43:34,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34" (1/1) ... [2020-10-23 18:43:34,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34" (1/1) ... [2020-10-23 18:43:34,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34" (1/1) ... [2020-10-23 18:43:34,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:43:34,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:43:34,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:43:34,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:43:34,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-23 18:43:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:43:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:43:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:43:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:43:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-23 18:43:34,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:43:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:43:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:43:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:43:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:43:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:43:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-23 18:43:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:43:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:43:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:43:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:43:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:43:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:43:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:43:35,246 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:43:35,246 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 18:43:35,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:35 BoogieIcfgContainer [2020-10-23 18:43:35,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:43:35,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:43:35,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:43:35,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:43:35,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:43:34" (1/3) ... [2020-10-23 18:43:35,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3011b953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:35, skipping insertion in model container [2020-10-23 18:43:35,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:34" (2/3) ... [2020-10-23 18:43:35,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3011b953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:35, skipping insertion in model container [2020-10-23 18:43:35,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:35" (3/3) ... [2020-10-23 18:43:35,259 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2020-10-23 18:43:35,274 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:43:35,279 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:43:35,309 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:43:35,340 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:43:35,340 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:43:35,341 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:43:35,341 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:43:35,341 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:43:35,341 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:43:35,341 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:43:35,341 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:43:35,362 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-23 18:43:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-23 18:43:35,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:35,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:35,370 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:35,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:35,378 INFO L82 PathProgramCache]: Analyzing trace with hash -380414709, now seen corresponding path program 1 times [2020-10-23 18:43:35,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:35,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355474467] [2020-10-23 18:43:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:35,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355474467] [2020-10-23 18:43:35,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:35,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:43:35,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125203045] [2020-10-23 18:43:35,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:43:35,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:35,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:43:35,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:43:35,672 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-23 18:43:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:35,761 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2020-10-23 18:43:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:43:35,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-23 18:43:35,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:35,772 INFO L225 Difference]: With dead ends: 42 [2020-10-23 18:43:35,773 INFO L226 Difference]: Without dead ends: 20 [2020-10-23 18:43:35,777 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 [2020-10-23 18:43:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-23 18:43:35,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-10-23 18:43:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-23 18:43:35,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-23 18:43:35,854 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-10-23 18:43:35,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:35,855 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-23 18:43:35,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:43:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-23 18:43:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:43:35,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:35,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:35,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:43:35,858 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:35,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:35,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1882206006, now seen corresponding path program 1 times [2020-10-23 18:43:35,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:35,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882931818] [2020-10-23 18:43:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:36,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:36,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:43:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:36,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882931818] [2020-10-23 18:43:36,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:36,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 18:43:36,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009022340] [2020-10-23 18:43:36,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:43:36,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:36,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:43:36,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:43:36,117 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2020-10-23 18:43:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:36,302 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-23 18:43:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:43:36,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-23 18:43:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:36,303 INFO L225 Difference]: With dead ends: 18 [2020-10-23 18:43:36,304 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:43:36,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:43:36,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:43:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:43:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:43:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:43:36,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-23 18:43:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:36,307 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:43:36,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:43:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:43:36,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:43:36,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:43:36,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:43:36,566 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:43:36,567 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:43:36,567 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:43:36,567 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:43:36,567 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:36,568 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)|) (= ~x~0 |old(~x~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 18:43:36,568 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:36,569 INFO L270 CegarLoopResult]: At program point evalENTRY(lines 14 21) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-10-23 18:43:36,571 INFO L274 CegarLoopResult]: For program point L16-1(lines 14 21) no Hoare annotation was computed. [2020-10-23 18:43:36,572 INFO L274 CegarLoopResult]: For program point evalEXIT(lines 14 21) no Hoare annotation was computed. [2020-10-23 18:43:36,573 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:36,573 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= ~x~0 0) [2020-10-23 18:43:36,573 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:43:36,573 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:36,574 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-23 18:43:36,574 INFO L270 CegarLoopResult]: At program point L29(lines 24 35) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-10-23 18:43:36,576 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-10-23 18:43:36,577 INFO L270 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-10-23 18:43:36,577 INFO L270 CegarLoopResult]: At program point L26-1(lines 26 30) the Hoare annotation is: (not (= |old(~x~0)| 0)) [2020-10-23 18:43:36,577 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2020-10-23 18:43:36,577 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2020-10-23 18:43:36,577 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-23 18:43:36,578 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-23 18:43:36,578 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= ~x~0 0))) [2020-10-23 18:43:36,578 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-23 18:43:36,578 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-23 18:43:36,578 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-23 18:43:36,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:36 BoogieIcfgContainer [2020-10-23 18:43:36,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:43:36,607 INFO L168 Benchmark]: Toolchain (without parser) took 2183.53 ms. Allocated memory is still 158.3 MB. Free memory was 133.3 MB in the beginning and 141.3 MB in the end (delta: -7.9 MB). Peak memory consumption was 84.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:36,610 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 132.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:43:36,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.52 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 123.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:36,613 INFO L168 Benchmark]: Boogie Preprocessor took 37.22 ms. Allocated memory is still 158.3 MB. Free memory was 123.7 MB in the beginning and 122.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:36,614 INFO L168 Benchmark]: RCFGBuilder took 531.45 ms. Allocated memory is still 158.3 MB. Free memory was 122.2 MB in the beginning and 110.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:36,616 INFO L168 Benchmark]: TraceAbstraction took 1350.65 ms. Allocated memory is still 158.3 MB. Free memory was 109.8 MB in the beginning and 141.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 60.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:36,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 132.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.52 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 123.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.22 ms. Allocated memory is still 158.3 MB. Free memory was 123.7 MB in the beginning and 122.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 531.45 ms. Allocated memory is still 158.3 MB. Free memory was 122.2 MB in the beginning and 110.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1350.65 ms. Allocated memory is still 158.3 MB. Free memory was 109.8 MB in the beginning and 141.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 60.3 MB. Max. memory is 8.0 GB. * 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 23 SDslu, 17 SDs, 0 SdLazy, 28 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 17 PreInvPairs, 20 NumberOfFragments, 84 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 184 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...