/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-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:46:48,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:46:48,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:46:48,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:46:48,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:46:48,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:46:48,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:46:48,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:46:48,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:46:48,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:46:48,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:46:48,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:46:48,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:46:48,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:46:48,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:46:48,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:46:48,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:46:48,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:46:48,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:46:48,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:46:48,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:46:48,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:46:48,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:46:48,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:46:48,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:46:48,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:46:48,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:46:48,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:46:48,954 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 22:46:49,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:46:49,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:46:49,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:46:49,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:46:49,008 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:46:49,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:46:49,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:46:49,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:46:49,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:46:49,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:46:49,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:46:49,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:46:49,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:46:49,010 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:46:49,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:46:49,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:46:49,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:46:49,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:46:49,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:46:49,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:46:49,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:46:49,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:49,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:46:49,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:46:49,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:46:49,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:46:49,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:46:49,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:46:49,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:46:49,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:46:49,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:46:49,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:46:49,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:46:49,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:46:49,464 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:46:49,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-11-06 22:46:49,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e5ebec0b/861feb6913574d7d815780d71d75e352/FLAGb8aaa6ba5 [2020-11-06 22:46:50,182 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:46:50,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-11-06 22:46:50,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e5ebec0b/861feb6913574d7d815780d71d75e352/FLAGb8aaa6ba5 [2020-11-06 22:46:50,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e5ebec0b/861feb6913574d7d815780d71d75e352 [2020-11-06 22:46:50,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:46:50,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:46:50,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:50,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:46:50,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:46:50,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:50" (1/1) ... [2020-11-06 22:46:50,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd3882f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50, skipping insertion in model container [2020-11-06 22:46:50,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:50" (1/1) ... [2020-11-06 22:46:50,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:46:50,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:46:50,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:50,752 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:46:50,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:50,787 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:46:50,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50 WrapperNode [2020-11-06 22:46:50,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:50,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:46:50,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:46:50,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:46:50,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50" (1/1) ... [2020-11-06 22:46:50,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50" (1/1) ... [2020-11-06 22:46:50,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50" (1/1) ... [2020-11-06 22:46:50,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50" (1/1) ... [2020-11-06 22:46:50,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50" (1/1) ... [2020-11-06 22:46:50,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50" (1/1) ... [2020-11-06 22:46:50,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50" (1/1) ... [2020-11-06 22:46:50,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:46:50,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:46:50,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:46:50,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:46:50,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50" (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 22:46:50,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:46:50,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:46:50,912 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:46:50,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:46:50,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:46:50,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:46:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:46:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:46:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:46:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:46:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:46:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:46:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:46:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:46:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:46:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:46:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:46:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:46:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:46:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:46:51,355 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:46:51,355 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:46:51,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:51 BoogieIcfgContainer [2020-11-06 22:46:51,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:46:51,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:46:51,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:46:51,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:46:51,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:50" (1/3) ... [2020-11-06 22:46:51,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba4db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:51, skipping insertion in model container [2020-11-06 22:46:51,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:50" (2/3) ... [2020-11-06 22:46:51,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba4db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:51, skipping insertion in model container [2020-11-06 22:46:51,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:51" (3/3) ... [2020-11-06 22:46:51,367 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-11-06 22:46:51,384 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:46:51,388 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:46:51,402 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:46:51,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:46:51,429 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:46:51,429 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:46:51,429 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:46:51,429 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:46:51,430 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:46:51,430 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:46:51,430 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:46:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-06 22:46:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:46:51,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:51,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:51,453 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:51,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:51,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1816841127, now seen corresponding path program 1 times [2020-11-06 22:46:51,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:51,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528794084] [2020-11-06 22:46:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:51,775 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-06 22:46:51,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:51,802 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 22:46:51,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528794084] [2020-11-06 22:46:51,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:51,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:46:51,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205801275] [2020-11-06 22:46:51,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:46:51,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:51,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:46:51,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:46:51,828 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-11-06 22:46:51,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:51,915 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-06 22:46:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:46:51,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-06 22:46:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:51,925 INFO L225 Difference]: With dead ends: 38 [2020-11-06 22:46:51,926 INFO L226 Difference]: Without dead ends: 15 [2020-11-06 22:46:51,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:46:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-06 22:46:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-06 22:46:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-06 22:46:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-06 22:46:51,969 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2020-11-06 22:46:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:51,970 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-06 22:46:51,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:46:51,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-06 22:46:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:46:51,971 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:51,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:51,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:46:51,972 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2103132637, now seen corresponding path program 1 times [2020-11-06 22:46:51,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:51,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801162860] [2020-11-06 22:46:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:52,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:52,207 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 22:46:52,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801162860] [2020-11-06 22:46:52,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:52,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:46:52,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982546967] [2020-11-06 22:46:52,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:46:52,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:52,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:46:52,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:46:52,214 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 6 states. [2020-11-06 22:46:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:52,569 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-11-06 22:46:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:46:52,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-06 22:46:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:52,573 INFO L225 Difference]: With dead ends: 23 [2020-11-06 22:46:52,573 INFO L226 Difference]: Without dead ends: 17 [2020-11-06 22:46:52,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:46:52,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-06 22:46:52,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-06 22:46:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-06 22:46:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-06 22:46:52,582 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-11-06 22:46:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:52,583 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-06 22:46:52,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:46:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-06 22:46:52,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:46:52,584 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:52,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:52,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:46:52,585 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:52,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:52,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1156129818, now seen corresponding path program 1 times [2020-11-06 22:46:52,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:52,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82588296] [2020-11-06 22:46:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:52,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:52,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82588296] [2020-11-06 22:46:52,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960960215] [2020-11-06 22:46:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:52,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-06 22:46:52,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:53,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:53,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-11-06 22:46:53,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662096466] [2020-11-06 22:46:53,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:46:53,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:53,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:46:53,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:46:53,033 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 10 states. [2020-11-06 22:46:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:53,486 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-11-06 22:46:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:46:53,487 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-06 22:46:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:53,487 INFO L225 Difference]: With dead ends: 20 [2020-11-06 22:46:53,488 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:46:53,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:46:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:46:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:46:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:46:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:46:53,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-06 22:46:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:53,490 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:46:53,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:46:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:46:53,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:46:53,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:46:53,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:46:53,922 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 7) no Hoare annotation was computed. [2020-11-06 22:46:53,922 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 7) the Hoare annotation is: true [2020-11-06 22:46:53,922 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 7) no Hoare annotation was computed. [2020-11-06 22:46:53,923 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-11-06 22:46:53,923 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:53,923 INFO L262 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)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#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|)) [2020-11-06 22:46:53,923 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:53,923 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:53,923 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:46:53,924 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:46:53,924 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:53,924 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2020-11-06 22:46:53,924 INFO L266 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-11-06 22:46:53,924 INFO L266 CegarLoopResult]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2020-11-06 22:46:53,924 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-11-06 22:46:53,924 INFO L266 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-11-06 22:46:53,925 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2020-11-06 22:46:53,925 INFO L266 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-11-06 22:46:53,925 INFO L262 CegarLoopResult]: At program point L27-2(lines 25 31) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-11-06 22:46:53,925 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 20 34) no Hoare annotation was computed. [2020-11-06 22:46:53,925 INFO L266 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-06 22:46:53,925 INFO L262 CegarLoopResult]: At program point L25-2(lines 25 31) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-11-06 22:46:53,926 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 20 34) no Hoare annotation was computed. [2020-11-06 22:46:53,926 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 17) the Hoare annotation is: true [2020-11-06 22:46:53,926 INFO L262 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-06 22:46:53,926 INFO L266 CegarLoopResult]: For program point L13(lines 13 15) no Hoare annotation was computed. [2020-11-06 22:46:53,926 INFO L266 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-11-06 22:46:53,926 INFO L266 CegarLoopResult]: For program point L13-2(lines 12 17) no Hoare annotation was computed. [2020-11-06 22:46:53,926 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 17) no Hoare annotation was computed. [2020-11-06 22:46:53,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:46:53 BoogieIcfgContainer [2020-11-06 22:46:53,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:46:53,944 INFO L168 Benchmark]: Toolchain (without parser) took 3394.48 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 126.7 MB in the beginning and 106.8 MB in the end (delta: 19.9 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:53,945 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:46:53,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.31 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:53,947 INFO L168 Benchmark]: Boogie Preprocessor took 40.28 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:53,948 INFO L168 Benchmark]: RCFGBuilder took 526.83 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 101.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:53,949 INFO L168 Benchmark]: TraceAbstraction took 2583.13 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 101.3 MB in the beginning and 106.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:53,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 230.31 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.28 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 526.83 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 101.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2583.13 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 101.3 MB in the beginning and 106.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: i == i / 3 * 3 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 41 SDslu, 48 SDs, 0 SdLazy, 96 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 22 NumberOfFragments, 56 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 340 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2530 SizeOfPredicates, 2 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...