/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/dijkstra-u_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:20:27,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:20:27,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:20:27,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 08:20:27,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:20:27,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:20:27,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:20:27,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:20:27,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:20:27,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:20:27,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:20:27,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:20:27,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:20:27,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:20:27,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:20:27,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:20:27,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 08:20:27,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:20:27,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:20:27,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:20:27,235 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 08:20:27,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:20:27,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:20:27,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:20:27,259 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:20:27,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:20:27,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:20:27,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:20:27,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:20:27,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:20:27,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:20:27,261 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:20:27,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:20:27,261 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:20:27,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:20:27,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:20:27,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:20:27,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:20:27,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:20:27,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:20:27,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:20:27,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:20:27,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:20:27,262 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:20:27,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:20:27,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:20:27,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:20:27,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:20:27,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:20:27,601 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:20:27,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound10.c [2021-05-01 08:20:27,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b238a1c7/40c497b01e014236a3420c243c3a7920/FLAGbb2ddaa68 [2021-05-01 08:20:28,260 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:20:28,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound10.c [2021-05-01 08:20:28,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b238a1c7/40c497b01e014236a3420c243c3a7920/FLAGbb2ddaa68 [2021-05-01 08:20:28,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b238a1c7/40c497b01e014236a3420c243c3a7920 [2021-05-01 08:20:28,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:20:28,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:20:28,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:20:28,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:20:28,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:20:28,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:20:28" (1/1) ... [2021-05-01 08:20:28,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505c8c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28, skipping insertion in model container [2021-05-01 08:20:28,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:20:28" (1/1) ... [2021-05-01 08:20:28,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:20:28,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:20:28,802 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_unwindbound10.c[533,546] [2021-05-01 08:20:28,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:20:28,884 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:20:28,903 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_unwindbound10.c[533,546] [2021-05-01 08:20:28,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:20:28,937 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:20:28,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28 WrapperNode [2021-05-01 08:20:28,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:20:28,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:20:28,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:20:28,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:20:28,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28" (1/1) ... [2021-05-01 08:20:28,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28" (1/1) ... [2021-05-01 08:20:28,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28" (1/1) ... [2021-05-01 08:20:28,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28" (1/1) ... [2021-05-01 08:20:28,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28" (1/1) ... [2021-05-01 08:20:28,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28" (1/1) ... [2021-05-01 08:20:28,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28" (1/1) ... [2021-05-01 08:20:28,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:20:28,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:20:28,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:20:28,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:20:28,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28" (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 08:20:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:20:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:20:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:20:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 08:20:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:20:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:20:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:20:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:20:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:20:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:20:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-01 08:20:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 08:20:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:20:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:20:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:20:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:20:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:20:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:20:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:20:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:20:29,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:20:29,481 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-01 08:20:29,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:20:29 BoogieIcfgContainer [2021-05-01 08:20:29,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:20:29,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:20:29,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:20:29,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:20:29,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:20:28" (1/3) ... [2021-05-01 08:20:29,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3956a75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:20:29, skipping insertion in model container [2021-05-01 08:20:29,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:28" (2/3) ... [2021-05-01 08:20:29,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3956a75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:20:29, skipping insertion in model container [2021-05-01 08:20:29,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:20:29" (3/3) ... [2021-05-01 08:20:29,490 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound10.c [2021-05-01 08:20:29,515 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:20:29,519 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:20:29,539 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:20:29,570 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:20:29,570 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:20:29,570 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:20:29,570 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:20:29,571 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:20:29,571 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:20:29,571 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:20:29,571 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:20:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-01 08:20:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 08:20:29,606 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:20:29,608 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:20:29,608 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:20:29,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:20:29,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2024343623, now seen corresponding path program 1 times [2021-05-01 08:20:29,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:20:29,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380264528] [2021-05-01 08:20:29,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:20:29,694 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:20:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:20:29,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:29,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:29,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:29,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:29,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:20:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:20:29,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:29,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:29,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:20:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:20:29,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:29,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:29,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:20:29,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:20:29,982 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 08:20:29,985 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:20:29,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380264528] [2021-05-01 08:20:30,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1380264528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:20:30,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:20:30,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 08:20:30,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275420399] [2021-05-01 08:20:30,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 08:20:30,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:20:30,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 08:20:30,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:20:30,042 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (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 08:20:34,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:20:34,638 INFO L93 Difference]: Finished difference Result 70 states and 111 transitions. [2021-05-01 08:20:34,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 08:20:34,640 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, (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 18 [2021-05-01 08:20:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:20:34,647 INFO L225 Difference]: With dead ends: 70 [2021-05-01 08:20:34,648 INFO L226 Difference]: Without dead ends: 35 [2021-05-01 08:20:34,651 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:20:34,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-01 08:20:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-05-01 08:20:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-01 08:20:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2021-05-01 08:20:34,691 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 18 [2021-05-01 08:20:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:20:34,692 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2021-05-01 08:20:34,692 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, (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 08:20:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2021-05-01 08:20:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-01 08:20:34,693 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:20:34,693 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:20:34,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:20:34,694 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:20:34,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:20:34,694 INFO L82 PathProgramCache]: Analyzing trace with hash -96361696, now seen corresponding path program 1 times [2021-05-01 08:20:34,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:20:34,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983717562] [2021-05-01 08:20:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:20:34,697 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:20:34,712 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 08:20:34,718 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 08:20:34,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:20:34,736 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 08:20:34,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:20:34 BoogieIcfgContainer [2021-05-01 08:20:34,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:20:34,738 INFO L168 Benchmark]: Toolchain (without parser) took 6085.06 ms. Allocated memory is still 255.9 MB. Free memory was 220.0 MB in the beginning and 213.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. [2021-05-01 08:20:34,738 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 255.9 MB. Free memory is still 236.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:20:34,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.70 ms. Allocated memory is still 255.9 MB. Free memory was 219.7 MB in the beginning and 238.6 MB in the end (delta: -19.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:20:34,739 INFO L168 Benchmark]: Boogie Preprocessor took 50.18 ms. Allocated memory is still 255.9 MB. Free memory was 238.6 MB in the beginning and 236.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 08:20:34,740 INFO L168 Benchmark]: RCFGBuilder took 492.30 ms. Allocated memory is still 255.9 MB. Free memory was 236.9 MB in the beginning and 219.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-01 08:20:34,740 INFO L168 Benchmark]: TraceAbstraction took 5252.83 ms. Allocated memory is still 255.9 MB. Free memory was 219.4 MB in the beginning and 213.0 MB in the end (delta: 6.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2021-05-01 08:20:34,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 255.9 MB. Free memory is still 236.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.70 ms. Allocated memory is still 255.9 MB. Free memory was 219.7 MB in the beginning and 238.6 MB in the end (delta: -19.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.18 ms. Allocated memory is still 255.9 MB. Free memory was 238.6 MB in the beginning and 236.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 492.30 ms. Allocated memory is still 255.9 MB. Free memory was 236.9 MB in the beginning and 219.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5252.83 ms. Allocated memory is still 255.9 MB. Free memory was 219.4 MB in the beginning and 213.0 MB in the end (delta: 6.4 MB). Peak memory consumption was 7.5 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: [L19] int counter = 0; [L21] unsigned int n, p, q, r, h; [L23] n = __VERIFIER_nondet_unsigned_int() [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] EXPR counter++ [L30] COND FALSE !(counter++<10) [L38] EXPR counter++ [L38] COND FALSE !(counter++<10) [L57] CALL __VERIFIER_assert(h*h*h - 12*h*n + 16*n*p + 12*h*r - 16*p*r - h - 4*p == 0) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 5156.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 21.6ms, AutomataDifference: 4633.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48 SDtfs, 10 SDslu, 4 SDs, 0 SdLazy, 25 SolverSat, 11 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4245.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 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...