/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/loop-acceleration/phases_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:43:39,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:43:39,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:43:39,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:43:39,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:43:39,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:43:39,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:43:39,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:43:39,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:43:39,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:43:39,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:43:39,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:43:39,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:43:39,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:43:39,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:43:39,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:43:39,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:43:39,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:43:39,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:43:39,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:43:39,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:43:39,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:43:39,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:43:39,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:43:39,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:43:39,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:43:39,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:43:39,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:43:39,182 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 18:43:39,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:43:39,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:43:39,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:43:39,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:43:39,213 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:43:39,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:43:39,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:43:39,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:43:39,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:43:39,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:43:39,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:43:39,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:43:39,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:43:39,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:43:39,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:43:39,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:43:39,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:43:39,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:43:39,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:43:39,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:43:39,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:43:39,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:43:39,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:43:39,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:43:39,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:43:39,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:43:39,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:43:39,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:43:39,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:43:39,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:43:39,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:43:39,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:43:39,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:43:39,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:43:39,626 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:43:39,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-10-23 18:43:39,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/914b9c224/3f2be7c404414b4a897685bb36b5140c/FLAG5df109864 [2020-10-23 18:43:40,392 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:43:40,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-10-23 18:43:40,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/914b9c224/3f2be7c404414b4a897685bb36b5140c/FLAG5df109864 [2020-10-23 18:43:40,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/914b9c224/3f2be7c404414b4a897685bb36b5140c [2020-10-23 18:43:40,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:43:40,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:43:40,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:40,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:43:40,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:43:40,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:40" (1/1) ... [2020-10-23 18:43:40,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1526b808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:40, skipping insertion in model container [2020-10-23 18:43:40,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:40" (1/1) ... [2020-10-23 18:43:40,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:43:40,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:43:40,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:40,972 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:43:40,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:41,011 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:43:41,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:41 WrapperNode [2020-10-23 18:43:41,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:41,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:43:41,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:43:41,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:43:41,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:41" (1/1) ... [2020-10-23 18:43:41,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:41" (1/1) ... [2020-10-23 18:43:41,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:41" (1/1) ... [2020-10-23 18:43:41,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:41" (1/1) ... [2020-10-23 18:43:41,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:41" (1/1) ... [2020-10-23 18:43:41,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:41" (1/1) ... [2020-10-23 18:43:41,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:41" (1/1) ... [2020-10-23 18:43:41,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:43:41,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:43:41,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:43:41,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:43:41,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:41" (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 18:43:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:43:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:43:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:43:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:43:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:43:41,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:43:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:43:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:43:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:43:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:43:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:43:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 18:43:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:43:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:43:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:43:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:43:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:43:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:43:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:43:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:43:41,753 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:43:41,754 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:43:41,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:41 BoogieIcfgContainer [2020-10-23 18:43:41,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:43:41,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:43:41,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:43:41,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:43:41,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:43:40" (1/3) ... [2020-10-23 18:43:41,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba7c8af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:41, skipping insertion in model container [2020-10-23 18:43:41,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:41" (2/3) ... [2020-10-23 18:43:41,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba7c8af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:41, skipping insertion in model container [2020-10-23 18:43:41,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:41" (3/3) ... [2020-10-23 18:43:41,771 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2020-10-23 18:43:41,788 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:43:41,793 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:43:41,809 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:43:41,850 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:43:41,851 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:43:41,851 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:43:41,851 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:43:41,851 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:43:41,851 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:43:41,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:43:41,852 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:43:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-23 18:43:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:43:41,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:41,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:41,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:41,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2147444184, now seen corresponding path program 1 times [2020-10-23 18:43:41,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:41,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93932] [2020-10-23 18:43:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:42,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:42,181 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 18:43:42,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93932] [2020-10-23 18:43:42,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:42,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:43:42,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199026846] [2020-10-23 18:43:42,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:43:42,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:42,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:43:42,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:43:42,208 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-23 18:43:42,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:42,303 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-10-23 18:43:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:43:42,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-23 18:43:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:42,315 INFO L225 Difference]: With dead ends: 36 [2020-10-23 18:43:42,315 INFO L226 Difference]: Without dead ends: 15 [2020-10-23 18:43:42,319 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 18:43:42,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-23 18:43:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-23 18:43:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-23 18:43:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-10-23 18:43:42,365 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2020-10-23 18:43:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:42,366 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-10-23 18:43:42,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:43:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-10-23 18:43:42,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:43:42,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:42,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:42,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:43:42,368 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:42,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1861152674, now seen corresponding path program 1 times [2020-10-23 18:43:42,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:42,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520365620] [2020-10-23 18:43:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:42,644 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 18:43:42,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520365620] [2020-10-23 18:43:42,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:42,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 18:43:42,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972957465] [2020-10-23 18:43:42,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:43:42,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:42,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:43:42,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:43:42,649 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2020-10-23 18:43:43,201 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-10-23 18:43:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:43,273 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-10-23 18:43:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 18:43:43,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-23 18:43:43,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:43,276 INFO L225 Difference]: With dead ends: 23 [2020-10-23 18:43:43,276 INFO L226 Difference]: Without dead ends: 17 [2020-10-23 18:43:43,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:43:43,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-23 18:43:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-23 18:43:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-23 18:43:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-23 18:43:43,291 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-10-23 18:43:43,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:43,292 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-23 18:43:43,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:43:43,293 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-23 18:43:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:43:43,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:43,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:43,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:43:43,295 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:43,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1577201703, now seen corresponding path program 1 times [2020-10-23 18:43:43,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:43,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340543398] [2020-10-23 18:43:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:43,335 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:43:43,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973768757] [2020-10-23 18:43:43,336 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 [2020-10-23 18:43:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:43,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-23 18:43:43,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:43,542 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-23 18:43:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:43,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340543398] [2020-10-23 18:43:43,600 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:43:43,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973768757] [2020-10-23 18:43:43,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:43:43,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-23 18:43:43,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464126188] [2020-10-23 18:43:43,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:43:43,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:43,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:43:43,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:43:43,603 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 8 states. [2020-10-23 18:43:43,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:43,643 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-10-23 18:43:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:43:43,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-23 18:43:43,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:43,644 INFO L225 Difference]: With dead ends: 18 [2020-10-23 18:43:43,644 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:43:43,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:43:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:43:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:43:43,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:43:43,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:43:43,646 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-23 18:43:43,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:43,646 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:43:43,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:43:43,647 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:43:43,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:43:43,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:43:43,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:43:44,091 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:43:44,092 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:43:44,092 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:43:44,092 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:43:44,092 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:44,093 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 18:43:44,093 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:44,094 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:44,094 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:43:44,094 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:43:44,094 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:44,094 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2020-10-23 18:43:44,094 INFO L274 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-23 18:43:44,095 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-10-23 18:43:44,095 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-10-23 18:43:44,095 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 17 32) the Hoare annotation is: true [2020-10-23 18:43:44,095 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 17 32) no Hoare annotation was computed. [2020-10-23 18:43:44,095 INFO L274 CegarLoopResult]: For program point L24(lines 24 28) no Hoare annotation was computed. [2020-10-23 18:43:44,095 INFO L270 CegarLoopResult]: At program point L24-2(lines 23 29) the Hoare annotation is: (and (= main_~x~0 1) (<= (+ (* 4294967296 (div main_~y~0 4294967296)) 1) main_~y~0)) [2020-10-23 18:43:44,096 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-23 18:43:44,096 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 29) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~y~0 4294967296)))) (and (<= (+ main_~y~0 (* 4294967296 (div main_~x~0 4294967296))) (+ main_~x~0 .cse0)) (= main_~x~0 1) (<= (+ .cse0 1) main_~y~0))) [2020-10-23 18:43:44,096 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 17 32) no Hoare annotation was computed. [2020-10-23 18:43:44,096 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 15) the Hoare annotation is: true [2020-10-23 18:43:44,096 INFO L270 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 18:43:44,097 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-10-23 18:43:44,097 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 18:43:44,097 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 15) no Hoare annotation was computed. [2020-10-23 18:43:44,097 INFO L274 CegarLoopResult]: For program point L11-2(lines 10 15) no Hoare annotation was computed. [2020-10-23 18:43:44,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:44 BoogieIcfgContainer [2020-10-23 18:43:44,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:43:44,126 INFO L168 Benchmark]: Toolchain (without parser) took 3387.47 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 133.9 MB in the beginning and 159.8 MB in the end (delta: -25.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:44,127 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:43:44,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.58 ms. Allocated memory is still 152.0 MB. Free memory was 133.2 MB in the beginning and 123.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:44,134 INFO L168 Benchmark]: Boogie Preprocessor took 57.52 ms. Allocated memory is still 152.0 MB. Free memory was 123.4 MB in the beginning and 136.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:44,136 INFO L168 Benchmark]: RCFGBuilder took 685.13 ms. Allocated memory is still 152.0 MB. Free memory was 136.3 MB in the beginning and 122.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:44,144 INFO L168 Benchmark]: TraceAbstraction took 2361.35 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 122.4 MB in the beginning and 159.8 MB in the end (delta: -37.3 MB). Peak memory consumption was 61.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:44,151 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 152.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.58 ms. Allocated memory is still 152.0 MB. Free memory was 133.2 MB in the beginning and 123.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.52 ms. Allocated memory is still 152.0 MB. Free memory was 123.4 MB in the beginning and 136.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 685.13 ms. Allocated memory is still 152.0 MB. Free memory was 136.3 MB in the beginning and 122.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2361.35 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 122.4 MB in the beginning and 159.8 MB in the end (delta: -37.3 MB). Peak memory consumption was 61.7 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 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == 1 && 4294967296 * (y / 4294967296) + 1 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 30 SDslu, 57 SDs, 0 SdLazy, 73 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 18 NumberOfFragments, 80 HoareAnnotationTreeSize, 15 FomulaSimplifications, 51 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 2454 SizeOfPredicates, 2 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...