/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/loop-lit/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:32:53,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:32:53,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:32:53,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:32:53,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 23:32:53,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 23:32:53,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 23:32:53,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 23:32:53,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 23:32:53,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 23:32:53,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 23:32:53,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 23:32:53,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 23:32:53,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 23:32:53,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 23:32:53,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 23:32:53,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 23:32:53,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:32:53,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:32:53,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:32:53,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:32:53,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:32:53,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:32:53,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:32:53,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:32:53,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:32:53,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:32:53,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:32:53,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:32:53,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:32:53,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:32:53,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:32:53,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:32:53,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:32:53,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:32:53,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:32:53,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:32:53,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:32:53,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:32:53,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:32:53,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:32:53,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:32:53,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:32:53,376 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:32:53,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:32:53,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:32:53,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:32:53,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:32:53,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:32:53,643 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:32:53,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-05-02 23:32:53,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38d820aa2/c22181482cac46c0b359d5a804c468f7/FLAG02ce9bb42 [2021-05-02 23:32:54,050 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:32:54,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-05-02 23:32:54,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38d820aa2/c22181482cac46c0b359d5a804c468f7/FLAG02ce9bb42 [2021-05-02 23:32:54,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38d820aa2/c22181482cac46c0b359d5a804c468f7 [2021-05-02 23:32:54,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:32:54,076 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:32:54,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:32:54,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:32:54,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:32:54,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:32:54" (1/1) ... [2021-05-02 23:32:54,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7eb63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54, skipping insertion in model container [2021-05-02 23:32:54,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:32:54" (1/1) ... [2021-05-02 23:32:54,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:32:54,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:32:54,218 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i[895,908] [2021-05-02 23:32:54,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:32:54,238 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:32:54,247 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i[895,908] [2021-05-02 23:32:54,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:32:54,263 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:32:54,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54 WrapperNode [2021-05-02 23:32:54,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:32:54,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:32:54,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:32:54,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:32:54,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54" (1/1) ... [2021-05-02 23:32:54,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54" (1/1) ... [2021-05-02 23:32:54,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54" (1/1) ... [2021-05-02 23:32:54,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54" (1/1) ... [2021-05-02 23:32:54,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54" (1/1) ... [2021-05-02 23:32:54,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54" (1/1) ... [2021-05-02 23:32:54,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54" (1/1) ... [2021-05-02 23:32:54,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:32:54,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:32:54,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:32:54,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:32:54,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54" (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 [2021-05-02 23:32:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:32:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:32:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:32:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 23:32:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:32:54,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:32:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:32:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:32:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 23:32:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 23:32:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:32:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:32:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 23:32:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:32:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 23:32:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:32:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:32:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:32:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:32:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:32:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:32:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:32:54,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:32:54,598 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-02 23:32:54,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:32:54 BoogieIcfgContainer [2021-05-02 23:32:54,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:32:54,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:32:54,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:32:54,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:32:54,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:32:54" (1/3) ... [2021-05-02 23:32:54,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6342c4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:32:54, skipping insertion in model container [2021-05-02 23:32:54,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:32:54" (2/3) ... [2021-05-02 23:32:54,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6342c4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:32:54, skipping insertion in model container [2021-05-02 23:32:54,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:32:54" (3/3) ... [2021-05-02 23:32:54,616 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2021-05-02 23:32:54,621 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:32:54,623 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:32:54,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:32:54,649 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:32:54,649 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:32:54,650 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:32:54,650 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:32:54,650 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:32:54,650 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:32:54,650 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:32:54,650 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:32:54,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 23:32:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:32:54,664 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:54,665 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:32:54,665 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:54,669 INFO L82 PathProgramCache]: Analyzing trace with hash -990540922, now seen corresponding path program 1 times [2021-05-02 23:32:54,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:54,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395830925] [2021-05-02 23:32:54,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:54,747 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:32:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:54,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:32:54,887 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:54,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395830925] [2021-05-02 23:32:54,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1395830925] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:54,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:54,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 23:32:54,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423801833] [2021-05-02 23:32:54,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 23:32:54,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:54,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 23:32:54,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:32:54,904 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:32:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:54,961 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2021-05-02 23:32:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 23:32:54,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 23:32:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:54,968 INFO L225 Difference]: With dead ends: 38 [2021-05-02 23:32:54,968 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 23:32:54,971 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:32:54,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 23:32:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 23:32:55,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:32:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-05-02 23:32:55,003 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-05-02 23:32:55,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:55,007 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-05-02 23:32:55,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:32:55,007 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-05-02 23:32:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:32:55,008 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:55,008 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:32:55,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:32:55,009 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:55,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:55,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1017323031, now seen corresponding path program 1 times [2021-05-02 23:32:55,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:55,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111700799] [2021-05-02 23:32:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:55,018 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:32:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:32:55,116 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:55,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111700799] [2021-05-02 23:32:55,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [111700799] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:55,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:55,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 23:32:55,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572700651] [2021-05-02 23:32:55,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 23:32:55,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:55,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 23:32:55,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:32:55,118 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:32:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:55,172 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-02 23:32:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 23:32:55,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 23:32:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:55,173 INFO L225 Difference]: With dead ends: 21 [2021-05-02 23:32:55,173 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 23:32:55,173 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:32:55,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 23:32:55,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 23:32:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:32:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-02 23:32:55,178 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2021-05-02 23:32:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:55,178 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-02 23:32:55,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:32:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-02 23:32:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 23:32:55,178 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:55,178 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:32:55,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:32:55,179 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:55,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1873832261, now seen corresponding path program 1 times [2021-05-02 23:32:55,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:55,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345452673] [2021-05-02 23:32:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:55,239 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 20 v_main_~j~0_7) (<= v_main_~i~0_9 100)) InVars {main_~i~0=v_main_~i~0_9, main_~j~0=v_main_~j~0_7} OutVars{main_~i~0=v_main_~i~0_9, main_~j~0=v_main_~j~0_7} AuxVars[] AssignedVars[] [2021-05-02 23:32:55,249 WARN L240 tifierPushTermWalker]: treesize reduction 17, result has 77.0 percent of original size [2021-05-02 23:32:55,252 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:55,265 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-02 23:32:55,307 WARN L245 tifierPushTermWalker]: treesize reduction 17, result has 77.0 percent of original size 57 [2021-05-02 23:32:55,338 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:32:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:32:55,465 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:55,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345452673] [2021-05-02 23:32:55,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1345452673] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:55,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:55,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:32:55,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496999592] [2021-05-02 23:32:55,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:32:55,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:55,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:32:55,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:32:55,467 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:32:55,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:55,529 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2021-05-02 23:32:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:32:55,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 23:32:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:55,530 INFO L225 Difference]: With dead ends: 26 [2021-05-02 23:32:55,530 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 23:32:55,530 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-02 23:32:55,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 23:32:55,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 23:32:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:32:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 23:32:55,533 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2021-05-02 23:32:55,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:55,534 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 23:32:55,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:32:55,534 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 23:32:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 23:32:55,534 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:55,534 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:32:55,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 23:32:55,534 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:55,535 INFO L82 PathProgramCache]: Analyzing trace with hash -479695372, now seen corresponding path program 1 times [2021-05-02 23:32:55,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:55,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595707737] [2021-05-02 23:32:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:55,546 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~j~0_9 20) InVars {main_~j~0=v_main_~j~0_9} OutVars{main_~j~0=v_main_~j~0_9} AuxVars[] AssignedVars[] [2021-05-02 23:32:55,553 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-02 23:32:55,561 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:55,567 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:55,579 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-02 23:32:55,580 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:55,581 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:55,586 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:55,596 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-02 23:32:55,601 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 23:32:57,657 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:32:57,675 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:57,686 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-02 23:32:57,693 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-02 23:32:57,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:32:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:32:57,798 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 19 (+ v_main_~i~0_16 v_main_~j~0_13)) (< v_main_~j~0_13 20) (<= v_main_~i~0_16 100)) InVars {main_~i~0=v_main_~i~0_16, main_~j~0=v_main_~j~0_13} OutVars{main_~i~0=v_main_~i~0_16, main_~j~0=v_main_~j~0_13} AuxVars[] AssignedVars[] [2021-05-02 23:32:57,818 WARN L240 tifierPushTermWalker]: treesize reduction 16, result has 96.3 percent of original size [2021-05-02 23:32:57,828 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:57,837 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:57,840 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:57,951 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:32:57,955 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-02 23:32:57,958 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:57,986 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-02 23:32:58,596 WARN L205 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 1 [2021-05-02 23:32:58,606 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-02 23:32:58,621 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:58,626 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:59,750 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 13 DAG size of output: 1 [2021-05-02 23:33:00,574 WARN L205 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:33:00,729 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:33:00,730 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:33:00,742 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:00,752 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-02 23:33:00,753 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-02 23:33:00,754 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:01,049 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-02 23:33:01,050 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-05-02 23:33:01,317 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:33:01,338 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:01,924 WARN L205 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:33:01,925 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:33:02,109 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-05-02 23:33:02,159 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:02,164 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:02,166 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:02,175 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-02 23:33:02,177 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:02,193 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:33:02,217 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-02 23:33:02,225 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:02,227 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:02,309 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:33:02,319 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:02,325 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-02 23:33:02,327 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-02 23:33:02,327 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:02,355 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-02 23:33:02,356 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-02 23:33:02,361 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:02,367 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:33:02,376 WARN L245 tifierPushTermWalker]: treesize reduction 16, result has 96.3 percent of original size 411 [2021-05-02 23:33:02,411 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:33:02,418 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-02 23:33:02,418 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 23:33:02,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-02 23:33:02,429 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-02 23:33:02,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:33:02 BoogieIcfgContainer [2021-05-02 23:33:02,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:33:02,430 INFO L168 Benchmark]: Toolchain (without parser) took 8353.45 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 131.3 MB in the beginning and 131.8 MB in the end (delta: -556.5 kB). Peak memory consumption was 33.1 MB. Max. memory is 8.0 GB. [2021-05-02 23:33:02,430 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 165.7 MB. Free memory is still 148.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:33:02,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.97 ms. Allocated memory is still 165.7 MB. Free memory was 131.1 MB in the beginning and 121.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 23:33:02,430 INFO L168 Benchmark]: Boogie Preprocessor took 61.16 ms. Allocated memory is still 165.7 MB. Free memory was 150.8 MB in the beginning and 149.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 23:33:02,430 INFO L168 Benchmark]: RCFGBuilder took 258.87 ms. Allocated memory is still 165.7 MB. Free memory was 149.3 MB in the beginning and 135.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 23:33:02,431 INFO L168 Benchmark]: TraceAbstraction took 7829.05 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 134.7 MB in the beginning and 131.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 37.2 MB. Max. memory is 8.0 GB. [2021-05-02 23:33:02,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 165.7 MB. Free memory is still 148.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 185.97 ms. Allocated memory is still 165.7 MB. Free memory was 131.1 MB in the beginning and 121.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.16 ms. Allocated memory is still 165.7 MB. Free memory was 150.8 MB in the beginning and 149.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 258.87 ms. Allocated memory is still 165.7 MB. Free memory was 149.3 MB in the beginning and 135.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7829.05 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 134.7 MB in the beginning and 131.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 37.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: 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: [L25] int i,j,k; [L26] i = 0 [L27] k = 9 [L28] j = -100 [L29] COND TRUE i <= 100 [L30] i = i + 1 [L31] COND TRUE j < 20 [L32] j = i + j [L31] COND FALSE !(j < 20) [L34] k = 4 [L35] COND FALSE !(k <= 3) [L29] COND FALSE !(i <= 100) [L39] CALL __VERIFIER_assert(k == 4) [L18] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 7773.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 8.8ms, AutomataDifference: 196.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 37 SDslu, 22 SDs, 0 SdLazy, 45 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 149.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.7ms AutomataMinimizationTime, 3 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...