/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/terminator_03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:45:27,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:45:27,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:45:27,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:45:27,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:45:27,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:45:27,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:45:27,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:45:27,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:45:27,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:45:27,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:45:27,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:45:27,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:45:27,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:45:27,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:45:27,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:45:27,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:45:27,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:45:27,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:45:27,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:45:27,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:45:27,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:45:27,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:45:27,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:45:27,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:45:27,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:45:27,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:45:27,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:45:27,968 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 [2020-11-06 22:45:27,999 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:45:28,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:45:28,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:45:28,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:45:28,002 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:45:28,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:45:28,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:45:28,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:45:28,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:45:28,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:45:28,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:45:28,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:45:28,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:45:28,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:45:28,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:45:28,005 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:45:28,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:45:28,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:45:28,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:45:28,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:45:28,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:45:28,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:45:28,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:45:28,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:45:28,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:45:28,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:45:28,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:45:28,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:45:28,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:45:28,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:45:28,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:45:28,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:45:28,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:45:28,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:45:28,425 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:45:28,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-2.i [2020-11-06 22:45:28,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d7416074/5e013a6a3d864fe49880ae495113c326/FLAG3983372e2 [2020-11-06 22:45:29,235 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:45:29,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-2.i [2020-11-06 22:45:29,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d7416074/5e013a6a3d864fe49880ae495113c326/FLAG3983372e2 [2020-11-06 22:45:29,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d7416074/5e013a6a3d864fe49880ae495113c326 [2020-11-06 22:45:29,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:45:29,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:45:29,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:29,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:45:29,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:45:29,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:29" (1/1) ... [2020-11-06 22:45:29,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f9954f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29, skipping insertion in model container [2020-11-06 22:45:29,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:29" (1/1) ... [2020-11-06 22:45:29,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:45:29,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:45:29,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:29,834 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:45:29,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:29,870 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:45:29,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29 WrapperNode [2020-11-06 22:45:29,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:29,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:45:29,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:45:29,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:45:29,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29" (1/1) ... [2020-11-06 22:45:29,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29" (1/1) ... [2020-11-06 22:45:29,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29" (1/1) ... [2020-11-06 22:45:29,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29" (1/1) ... [2020-11-06 22:45:29,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29" (1/1) ... [2020-11-06 22:45:29,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29" (1/1) ... [2020-11-06 22:45:29,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29" (1/1) ... [2020-11-06 22:45:29,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:45:29,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:45:29,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:45:29,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:45:29,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29" (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 [2020-11-06 22:45:30,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:45:30,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:45:30,012 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:45:30,012 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:45:30,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:45:30,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:45:30,013 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:45:30,013 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:45:30,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:45:30,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:45:30,015 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:45:30,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:45:30,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:45:30,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:45:30,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:45:30,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-06 22:45:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:45:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:45:30,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:45:30,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:45:30,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:45:30,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:45:30,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:45:30,585 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:45:30,586 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:45:30,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:30 BoogieIcfgContainer [2020-11-06 22:45:30,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:45:30,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:45:30,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:45:30,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:45:30,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:29" (1/3) ... [2020-11-06 22:45:30,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@878d6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:30, skipping insertion in model container [2020-11-06 22:45:30,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:29" (2/3) ... [2020-11-06 22:45:30,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@878d6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:30, skipping insertion in model container [2020-11-06 22:45:30,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:30" (3/3) ... [2020-11-06 22:45:30,601 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-2.i [2020-11-06 22:45:30,622 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:45:30,630 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:45:30,646 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:45:30,753 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:45:30,753 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:45:30,753 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:45:30,754 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:45:30,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:45:30,758 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:45:30,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:45:30,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:45:30,777 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-06 22:45:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-06 22:45:30,783 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:30,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:30,785 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:30,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:30,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1531997128, now seen corresponding path program 1 times [2020-11-06 22:45:30,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:30,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332489992] [2020-11-06 22:45:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:31,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332489992] [2020-11-06 22:45:31,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:31,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:45:31,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845028015] [2020-11-06 22:45:31,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:45:31,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:45:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:45:31,278 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-11-06 22:45:31,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:31,983 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-11-06 22:45:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:45:31,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-06 22:45:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:32,003 INFO L225 Difference]: With dead ends: 48 [2020-11-06 22:45:32,004 INFO L226 Difference]: Without dead ends: 16 [2020-11-06 22:45:32,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:45:32,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-06 22:45:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-06 22:45:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-06 22:45:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-06 22:45:32,052 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-11-06 22:45:32,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:32,053 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-06 22:45:32,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:45:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-06 22:45:32,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:45:32,054 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:32,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:32,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:45:32,055 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:32,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:32,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1445745171, now seen corresponding path program 1 times [2020-11-06 22:45:32,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:32,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63948507] [2020-11-06 22:45:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:32,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63948507] [2020-11-06 22:45:32,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:32,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:45:32,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619627625] [2020-11-06 22:45:32,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:45:32,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:32,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:45:32,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:45:32,281 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-11-06 22:45:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:32,675 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-06 22:45:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:45:32,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-06 22:45:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:32,677 INFO L225 Difference]: With dead ends: 16 [2020-11-06 22:45:32,677 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:45:32,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:45:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:45:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:45:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:45:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:45:32,680 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-06 22:45:32,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:32,681 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:45:32,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:45:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:45:32,681 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:45:32,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:45:32,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:45:33,030 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-11-06 22:45:33,030 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-06 22:45:33,030 INFO L266 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-11-06 22:45:33,030 INFO L266 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-06 22:45:33,031 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-06 22:45:33,031 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:45:33,031 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-06 22:45:33,031 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:45:33,031 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:45:33,032 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:45:33,032 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:45:33,032 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:45:33,032 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-06 22:45:33,032 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:45:33,032 INFO L266 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:45:33,032 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:45:33,033 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2020-11-06 22:45:33,033 INFO L266 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2020-11-06 22:45:33,033 INFO L266 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-06 22:45:33,033 INFO L262 CegarLoopResult]: At program point L30-2(lines 30 32) the Hoare annotation is: (< 0 main_~y~0) [2020-11-06 22:45:33,033 INFO L262 CegarLoopResult]: At program point L29-1(lines 29 33) the Hoare annotation is: (or (<= 100 main_~x~0) (<= main_~y~0 0)) [2020-11-06 22:45:33,034 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 25 36) no Hoare annotation was computed. [2020-11-06 22:45:33,034 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 25 36) no Hoare annotation was computed. [2020-11-06 22:45:33,034 INFO L266 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-11-06 22:45:33,034 INFO L266 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:45:33,034 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-06 22:45:33,034 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:45:33,034 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-06 22:45:33,035 INFO L266 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-06 22:45:33,035 INFO L266 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-06 22:45:33,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:33 BoogieIcfgContainer [2020-11-06 22:45:33,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:33,053 INFO L168 Benchmark]: Toolchain (without parser) took 3478.29 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 115.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 79.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:33,054 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:33,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:33,056 INFO L168 Benchmark]: Boogie Preprocessor took 41.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:33,057 INFO L168 Benchmark]: RCFGBuilder took 673.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 101.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:33,058 INFO L168 Benchmark]: TraceAbstraction took 2458.05 ms. Allocated memory is still 151.0 MB. Free memory was 100.7 MB in the beginning and 115.2 MB in the end (delta: -14.5 MB). Peak memory consumption was 54.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:33,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 290.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 673.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 101.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2458.05 ms. Allocated memory is still 151.0 MB. Free memory was 100.7 MB in the beginning and 115.2 MB in the end (delta: -14.5 MB). Peak memory consumption was 54.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 30]: Loop Invariant Derived loop invariant: 0 < y - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 36 SDslu, 50 SDs, 0 SdLazy, 87 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 16 NumberOfFragments, 43 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 140 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1313 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...