/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:20:08,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:20:08,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:20:08,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 08:20:08,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 08:20:08,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 08:20:08,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 08:20:08,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 08:20:08,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 08:20:08,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 08:20:08,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 08:20:08,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 08:20:08,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:20:08,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:20:08,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:20:08,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:20:08,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:20:08,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:20:08,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:20:08,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:20:08,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:20:08,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:20:08,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:20:08,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:20:08,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 08:20:08,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 08:20:08,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 08:20:08,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 08:20:08,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 08:20:08,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 08:20:08,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 08:20:08,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 08:20:08,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 08:20:08,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 08:20:08,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 08:20:08,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 08:20:08,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 08:20:08,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 08:20:08,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:20:08,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:20:08,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:20:08,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 08:20:08,684 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:20:08,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:20:08,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:20:08,688 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:20:08,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:20:08,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:20:08,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:20:08,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:20:08,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:20:08,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:20:08,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:20:08,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:20:08,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:20:08,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:20:08,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:20:08,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:20:08,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:20:08,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:20:08,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:20:08,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:20:08,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:20:08,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:20:08,691 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:20:08,691 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:20:09,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:20:09,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:20:09,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:20:09,037 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:20:09,037 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:20:09,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound2.c [2021-05-01 08:20:09,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06cdf1751/9350263875794e4c989b72a3be07cb71/FLAGbe80ea2c1 [2021-05-01 08:20:09,491 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:20:09,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound2.c [2021-05-01 08:20:09,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06cdf1751/9350263875794e4c989b72a3be07cb71/FLAGbe80ea2c1 [2021-05-01 08:20:09,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06cdf1751/9350263875794e4c989b72a3be07cb71 [2021-05-01 08:20:09,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:20:09,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:20:09,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:20:09,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:20:09,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:20:09,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:20:09" (1/1) ... [2021-05-01 08:20:09,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7afe6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:09, skipping insertion in model container [2021-05-01 08:20:09,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:20:09" (1/1) ... [2021-05-01 08:20:09,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:20:09,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:20:10,042 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound2.c[596,609] [2021-05-01 08:20:10,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:20:10,078 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:20:10,092 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound2.c[596,609] [2021-05-01 08:20:10,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:20:10,152 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:20:10,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:10 WrapperNode [2021-05-01 08:20:10,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:20:10,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:20:10,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:20:10,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:20:10,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:10" (1/1) ... [2021-05-01 08:20:10,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:10" (1/1) ... [2021-05-01 08:20:10,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:10" (1/1) ... [2021-05-01 08:20:10,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:10" (1/1) ... [2021-05-01 08:20:10,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:10" (1/1) ... [2021-05-01 08:20:10,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:10" (1/1) ... [2021-05-01 08:20:10,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:10" (1/1) ... [2021-05-01 08:20:10,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:20:10,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:20:10,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:20:10,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:20:10,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:10" (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 [2021-05-01 08:20:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:20:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:20:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:20:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 08:20:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:20:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:20:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:20:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:20:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:20:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:20:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_short [2021-05-01 08:20:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 08:20:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:20:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:20:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:20:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:20:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:20:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:20:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:20:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:20:10,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:20:10,503 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 08:20:10,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:20:10 BoogieIcfgContainer [2021-05-01 08:20:10,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:20:10,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:20:10,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:20:10,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:20:10,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:20:09" (1/3) ... [2021-05-01 08:20:10,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38401f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:20:10, skipping insertion in model container [2021-05-01 08:20:10,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:10" (2/3) ... [2021-05-01 08:20:10,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38401f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:20:10, skipping insertion in model container [2021-05-01 08:20:10,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:20:10" (3/3) ... [2021-05-01 08:20:10,510 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound2.c [2021-05-01 08:20:10,513 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:20:10,516 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:20:10,527 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:20:10,539 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:20:10,539 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:20:10,539 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:20:10,539 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:20:10,540 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:20:10,540 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:20:10,540 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:20:10,540 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:20:10,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-01 08:20:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 08:20:10,554 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:20:10,555 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:20:10,555 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:20:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:20:10,559 INFO L82 PathProgramCache]: Analyzing trace with hash 503189915, now seen corresponding path program 1 times [2021-05-01 08:20:10,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:20:10,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701120353] [2021-05-01 08:20:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:20:10,629 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:20:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:20:10,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:10,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:10,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:10,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:10,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:20:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:20:10,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:10,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:10,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:20:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:20:10,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:10,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:10,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:10,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:20:10,843 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:20:10,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701120353] [2021-05-01 08:20:10,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [701120353] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:20:10,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:20:10,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 08:20:10,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716049541] [2021-05-01 08:20:10,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 08:20:10,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:20:10,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 08:20:10,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:20:10,871 INFO L87 Difference]: Start difference. First operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-01 08:20:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:20:11,069 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2021-05-01 08:20:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 08:20:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-01 08:20:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:20:11,077 INFO L225 Difference]: With dead ends: 63 [2021-05-01 08:20:11,077 INFO L226 Difference]: Without dead ends: 31 [2021-05-01 08:20:11,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:20:11,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-01 08:20:11,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-01 08:20:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-01 08:20:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-05-01 08:20:11,129 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 17 [2021-05-01 08:20:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:20:11,129 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-05-01 08:20:11,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-01 08:20:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-05-01 08:20:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 08:20:11,130 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:20:11,130 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:20:11,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:20:11,131 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:20:11,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:20:11,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1171868123, now seen corresponding path program 1 times [2021-05-01 08:20:11,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:20:11,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744107992] [2021-05-01 08:20:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:20:11,134 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:20:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:20:11,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:11,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:11,203 INFO L142 QuantifierPusher]: treesize reduction 17, result has 66.7 percent of original size [2021-05-01 08:20:11,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 08:20:11,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:11,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 08:20:11,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:11,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 08:20:11,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:11,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:11,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:20:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:20:11,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:11,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:11,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:20:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:20:11,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:11,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:20:11,255 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:20:11,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744107992] [2021-05-01 08:20:11,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [744107992] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:20:11,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:20:11,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 08:20:11,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584191247] [2021-05-01 08:20:11,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 08:20:11,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:20:11,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 08:20:11,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-01 08:20:11,258 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-01 08:20:11,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:20:11,582 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2021-05-01 08:20:11,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 08:20:11,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-01 08:20:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:20:11,584 INFO L225 Difference]: With dead ends: 37 [2021-05-01 08:20:11,584 INFO L226 Difference]: Without dead ends: 35 [2021-05-01 08:20:11,585 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-01 08:20:11,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-01 08:20:11,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-01 08:20:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-01 08:20:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2021-05-01 08:20:11,597 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 17 [2021-05-01 08:20:11,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:20:11,597 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-05-01 08:20:11,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-01 08:20:11,598 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2021-05-01 08:20:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 08:20:11,598 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:20:11,598 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:20:11,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:20:11,598 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:20:11,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:20:11,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1781524074, now seen corresponding path program 1 times [2021-05-01 08:20:11,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:20:11,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119117368] [2021-05-01 08:20:11,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:20:11,607 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:20:11,617 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 08:20:11,617 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 08:20:11,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 08:20:11,630 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 08:20:11,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:20:11 BoogieIcfgContainer [2021-05-01 08:20:11,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:20:11,641 INFO L168 Benchmark]: Toolchain (without parser) took 1722.78 ms. Allocated memory is still 179.3 MB. Free memory was 144.6 MB in the beginning and 154.2 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:20:11,641 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 179.3 MB. Free memory is still 161.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:20:11,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.79 ms. Allocated memory is still 179.3 MB. Free memory was 144.4 MB in the beginning and 162.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. [2021-05-01 08:20:11,642 INFO L168 Benchmark]: Boogie Preprocessor took 38.30 ms. Allocated memory is still 179.3 MB. Free memory was 162.9 MB in the beginning and 161.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 08:20:11,642 INFO L168 Benchmark]: RCFGBuilder took 311.23 ms. Allocated memory is still 179.3 MB. Free memory was 161.2 MB in the beginning and 146.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:20:11,643 INFO L168 Benchmark]: TraceAbstraction took 1124.61 ms. Allocated memory is still 179.3 MB. Free memory was 145.8 MB in the beginning and 154.2 MB in the end (delta: -8.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:20:11,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 179.3 MB. Free memory is still 161.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 241.79 ms. Allocated memory is still 179.3 MB. Free memory was 144.4 MB in the beginning and 162.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.30 ms. Allocated memory is still 179.3 MB. Free memory was 162.9 MB in the beginning and 161.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 311.23 ms. Allocated memory is still 179.3 MB. Free memory was 161.2 MB in the beginning and 146.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1124.61 ms. Allocated memory is still 179.3 MB. Free memory was 145.8 MB in the beginning and 154.2 MB in the end (delta: -8.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] short a; [L24] long long n, x, y, z; [L25] a = __VERIFIER_nondet_unsigned_short() [L26] CALL assume_abort_if_not(a>=0 && a<=2) [L12] COND FALSE !(!cond) [L26] RET assume_abort_if_not(a>=0 && a<=2) [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) [L15] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(z == 6 * n + 6) [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1082.9ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 8.1ms, AutomataDifference: 557.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 37 SDslu, 42 SDs, 0 SdLazy, 100 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 243.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 49.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...