/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-03 00:40:54,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 00:40:54,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 00:40:54,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 00:40:54,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 00:40:54,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 00:40:54,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 00:40:54,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-03 00:40:54,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 00:40:54,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 00:40:54,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 00:40:54,483 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 00:40:54,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 00:40:54,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 00:40:54,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 00:40:54,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 00:40:54,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 00:40:54,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 00:40:54,484 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 00:40:54,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 00:40:54,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 00:40:54,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 00:40:54,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 00:40:54,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 00:40:54,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 00:40:54,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 00:40:54,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 00:40:54,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 00:40:54,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-03 00:40:54,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 00:40:54,489 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-03 00:40:54,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-03 00:40:54,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 00:40:54,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 00:40:54,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 00:40:54,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-03 00:40:54,842 INFO L275 PluginConnector]: CDTParser initialized [2021-05-03 00:40:54,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound1.c [2021-05-03 00:40:54,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/407bd74e0/1bc3913bd1074890b5b9aa2baa6a1541/FLAG30b4f0820 [2021-05-03 00:40:55,308 INFO L306 CDTParser]: Found 1 translation units. [2021-05-03 00:40:55,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound1.c [2021-05-03 00:40:55,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/407bd74e0/1bc3913bd1074890b5b9aa2baa6a1541/FLAG30b4f0820 [2021-05-03 00:40:55,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/407bd74e0/1bc3913bd1074890b5b9aa2baa6a1541 [2021-05-03 00:40:55,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 00:40:55,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 00:40:55,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-03 00:40:55,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-03 00:40:55,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-03 00:40:55,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:40:55" (1/1) ... [2021-05-03 00:40:55,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3538561a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55, skipping insertion in model container [2021-05-03 00:40:55,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:40:55" (1/1) ... [2021-05-03 00:40:55,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-03 00:40:55,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-03 00:40:55,491 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/dijkstra-u_valuebound1.c[533,546] [2021-05-03 00:40:55,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:40:55,532 INFO L203 MainTranslator]: Completed pre-run [2021-05-03 00:40:55,552 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/dijkstra-u_valuebound1.c[533,546] [2021-05-03 00:40:55,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:40:55,604 INFO L208 MainTranslator]: Completed translation [2021-05-03 00:40:55,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55 WrapperNode [2021-05-03 00:40:55,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-03 00:40:55,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 00:40:55,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 00:40:55,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 00:40:55,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55" (1/1) ... [2021-05-03 00:40:55,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55" (1/1) ... [2021-05-03 00:40:55,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55" (1/1) ... [2021-05-03 00:40:55,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55" (1/1) ... [2021-05-03 00:40:55,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55" (1/1) ... [2021-05-03 00:40:55,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55" (1/1) ... [2021-05-03 00:40:55,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55" (1/1) ... [2021-05-03 00:40:55,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 00:40:55,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 00:40:55,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 00:40:55,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 00:40:55,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55" (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 [2021-05-03 00:40:55,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-03 00:40:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 00:40:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-03 00:40:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-03 00:40:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-03 00:40:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-03 00:40:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-03 00:40:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-03 00:40:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-03 00:40:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-03 00:40:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-03 00:40:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-03 00:40:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-03 00:40:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-03 00:40:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-03 00:40:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-03 00:40:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 00:40:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-03 00:40:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-03 00:40:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-03 00:40:55,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 00:40:55,958 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-03 00:40:55,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:40:55 BoogieIcfgContainer [2021-05-03 00:40:55,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 00:40:55,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 00:40:55,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 00:40:55,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 00:40:55,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.05 12:40:55" (1/3) ... [2021-05-03 00:40:55,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2870cb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:40:55, skipping insertion in model container [2021-05-03 00:40:55,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:40:55" (2/3) ... [2021-05-03 00:40:55,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2870cb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:40:55, skipping insertion in model container [2021-05-03 00:40:55,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:40:55" (3/3) ... [2021-05-03 00:40:55,982 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound1.c [2021-05-03 00:40:55,985 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-03 00:40:55,988 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 00:40:56,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-03 00:40:56,031 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 00:40:56,031 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 00:40:56,031 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-03 00:40:56,031 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 00:40:56,031 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 00:40:56,031 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 00:40:56,031 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 00:40:56,031 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 00:40:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-03 00:40:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-03 00:40:56,045 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:40:56,046 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:40:56,046 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:40:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:40:56,050 INFO L82 PathProgramCache]: Analyzing trace with hash 223850557, now seen corresponding path program 1 times [2021-05-03 00:40:56,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:40:56,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850646377] [2021-05-03 00:40:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:40:56,095 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:40:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:56,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:40:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:56,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-03 00:40:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-03 00:40:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-03 00:40:56,270 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:40:56,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850646377] [2021-05-03 00:40:56,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1850646377] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:40:56,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:40:56,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 00:40:56,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733415799] [2021-05-03 00:40:56,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 00:40:56,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:40:56,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 00:40:56,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:40:56,284 INFO L87 Difference]: Start difference. First operand has 38 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-03 00:40:59,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:40:59,569 INFO L93 Difference]: Finished difference Result 69 states and 113 transitions. [2021-05-03 00:40:59,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 00:40:59,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-03 00:40:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:40:59,576 INFO L225 Difference]: With dead ends: 69 [2021-05-03 00:40:59,576 INFO L226 Difference]: Without dead ends: 33 [2021-05-03 00:40:59,578 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:40:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-03 00:40:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-03 00:40:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-03 00:40:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2021-05-03 00:40:59,610 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 23 [2021-05-03 00:40:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:40:59,610 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-05-03 00:40:59,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-03 00:40:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2021-05-03 00:40:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-03 00:40:59,612 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:40:59,612 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:40:59,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 00:40:59,612 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:40:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:40:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash -563604624, now seen corresponding path program 1 times [2021-05-03 00:40:59,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:40:59,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946019616] [2021-05-03 00:40:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:40:59,616 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:40:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:40:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:59,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-03 00:40:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:59,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-03 00:40:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-03 00:40:59,885 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:40:59,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946019616] [2021-05-03 00:40:59,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1946019616] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:40:59,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:40:59,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 00:40:59,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556942184] [2021-05-03 00:40:59,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-03 00:40:59,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:40:59,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-03 00:40:59,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-03 00:40:59,888 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-03 00:41:25,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:41:25,447 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2021-05-03 00:41:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-03 00:41:25,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2021-05-03 00:41:25,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:41:25,450 INFO L225 Difference]: With dead ends: 47 [2021-05-03 00:41:25,450 INFO L226 Difference]: Without dead ends: 45 [2021-05-03 00:41:25,451 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 279.8ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-05-03 00:41:25,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-03 00:41:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2021-05-03 00:41:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-03 00:41:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2021-05-03 00:41:25,462 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 24 [2021-05-03 00:41:25,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:41:25,463 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2021-05-03 00:41:25,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-03 00:41:25,463 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2021-05-03 00:41:25,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-03 00:41:25,463 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:41:25,464 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:41:25,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 00:41:25,464 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:41:25,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:41:25,464 INFO L82 PathProgramCache]: Analyzing trace with hash -5094773, now seen corresponding path program 1 times [2021-05-03 00:41:25,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:41:25,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393879098] [2021-05-03 00:41:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:41:25,467 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:41:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:41:25,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:41:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:41:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-03 00:41:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:41:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-03 00:41:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:41:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-03 00:41:25,665 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:41:25,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393879098] [2021-05-03 00:41:25,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1393879098] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:41:25,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:41:25,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 00:41:25,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077066897] [2021-05-03 00:41:25,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 00:41:25,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:41:25,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 00:41:25,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-03 00:41:25,667 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-03 00:41:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:41:52,085 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2021-05-03 00:41:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 00:41:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2021-05-03 00:41:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:41:52,088 INFO L225 Difference]: With dead ends: 65 [2021-05-03 00:41:52,088 INFO L226 Difference]: Without dead ends: 63 [2021-05-03 00:41:52,088 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 447.5ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-05-03 00:41:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-03 00:41:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2021-05-03 00:41:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.25) internal successors, (30), 26 states have internal predecessors, (30), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-03 00:41:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 56 transitions. [2021-05-03 00:41:52,099 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 56 transitions. Word has length 26 [2021-05-03 00:41:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:41:52,099 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 56 transitions. [2021-05-03 00:41:52,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-03 00:41:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 56 transitions. [2021-05-03 00:41:52,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-03 00:41:52,100 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:41:52,100 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:41:52,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-03 00:41:52,100 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:41:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:41:52,101 INFO L82 PathProgramCache]: Analyzing trace with hash 598206390, now seen corresponding path program 1 times [2021-05-03 00:41:52,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:41:52,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372480796] [2021-05-03 00:41:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:41:52,103 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:41:52,121 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-03 00:41:52,121 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-03 00:41:52,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-03 00:41:52,136 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-03 00:41:52,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 12:41:52 BoogieIcfgContainer [2021-05-03 00:41:52,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 00:41:52,142 INFO L168 Benchmark]: Toolchain (without parser) took 56805.54 ms. Allocated memory is still 219.2 MB. Free memory was 183.6 MB in the beginning and 152.0 MB in the end (delta: 31.6 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2021-05-03 00:41:52,142 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 219.2 MB. Free memory is still 200.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-03 00:41:52,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.95 ms. Allocated memory is still 219.2 MB. Free memory was 183.4 MB in the beginning and 201.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. [2021-05-03 00:41:52,143 INFO L168 Benchmark]: Boogie Preprocessor took 40.76 ms. Allocated memory is still 219.2 MB. Free memory was 201.4 MB in the beginning and 199.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-03 00:41:52,144 INFO L168 Benchmark]: RCFGBuilder took 311.25 ms. Allocated memory is still 219.2 MB. Free memory was 199.9 MB in the beginning and 182.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-05-03 00:41:52,144 INFO L168 Benchmark]: TraceAbstraction took 56161.60 ms. Allocated memory is still 219.2 MB. Free memory was 181.5 MB in the beginning and 152.0 MB in the end (delta: 29.5 MB). Peak memory consumption was 30.6 MB. Max. memory is 8.0 GB. [2021-05-03 00:41:52,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 219.2 MB. Free memory is still 200.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.95 ms. Allocated memory is still 219.2 MB. Free memory was 183.4 MB in the beginning and 201.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.76 ms. Allocated memory is still 219.2 MB. Free memory was 201.4 MB in the beginning and 199.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 311.25 ms. Allocated memory is still 219.2 MB. Free memory was 199.9 MB in the beginning and 182.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 56161.60 ms. Allocated memory is still 219.2 MB. Free memory was 181.5 MB in the beginning and 152.0 MB in the end (delta: 29.5 MB). Peak memory consumption was 30.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: 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: [L20] unsigned int n, p, q, r, h; [L22] n = __VERIFIER_nondet_unsigned_int() [L23] CALL assume_abort_if_not(n>=0 && n<=1) [L9] COND FALSE !(!cond) [L23] RET assume_abort_if_not(n>=0 && n<=1) [L24] CALL assume_abort_if_not(n < 4294967295 / 4) [L9] COND FALSE !(!cond) [L24] RET assume_abort_if_not(n < 4294967295 / 4) [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 [L30] COND TRUE 1 [L31] COND TRUE !(q <= n) [L38] COND TRUE 1 [L39] CALL __VERIFIER_assert(r < 2 * p + q) [L12] COND FALSE !(!(cond)) [L39] RET __VERIFIER_assert(r < 2 * p + q) [L40] CALL __VERIFIER_assert(p*p + r*q == n*q) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 56096.5ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 9.6ms, AutomataDifference: 55289.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 107 SDtfs, 89 SDslu, 173 SDs, 0 SdLazy, 328 SolverSat, 101 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 52307.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 782.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=3, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 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...