/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-6253b08 [2021-05-06 11:35:49,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:35:49,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:35:49,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:35:49,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:35:49,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:35:49,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:35:49,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:35:49,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:35:49,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:35:49,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:35:49,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:35:49,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:35:49,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:35:49,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:35:49,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:35:49,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 11:35:49,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:35:49,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:35:49,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:35:49,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:35:49,308 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:35:49,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:35:49,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:35:49,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:35:49,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:35:49,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:35:49,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:35:49,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:35:49,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:35:49,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:35:49,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:35:49,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:35:49,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:35:49,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:35:49,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:35:49,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:35:49,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:35:49,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:35:49,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:35:49,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:35:49,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:35:49,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:35:49,315 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:35:49,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:35:49,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:35:49,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:35:49,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:35:49,656 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:35:49,656 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:35:49,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-05-06 11:35:49,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320a1c0e1/df785f9e5e2548ed823e92ce47f4bd92/FLAG0b9e1e7e4 [2021-05-06 11:35:50,105 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:35:50,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-05-06 11:35:50,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320a1c0e1/df785f9e5e2548ed823e92ce47f4bd92/FLAG0b9e1e7e4 [2021-05-06 11:35:50,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320a1c0e1/df785f9e5e2548ed823e92ce47f4bd92 [2021-05-06 11:35:50,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:35:50,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:35:50,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:35:50,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:35:50,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:35:50,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:35:50" (1/1) ... [2021-05-06 11:35:50,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6faed82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50, skipping insertion in model container [2021-05-06 11:35:50,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:35:50" (1/1) ... [2021-05-06 11:35:50,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:35:50,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:35:50,646 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] [2021-05-06 11:35:50,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:35:50,661 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:35:50,672 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] [2021-05-06 11:35:50,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:35:50,697 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:35:50,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50 WrapperNode [2021-05-06 11:35:50,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:35:50,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:35:50,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:35:50,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:35:50,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50" (1/1) ... [2021-05-06 11:35:50,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50" (1/1) ... [2021-05-06 11:35:50,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50" (1/1) ... [2021-05-06 11:35:50,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50" (1/1) ... [2021-05-06 11:35:50,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50" (1/1) ... [2021-05-06 11:35:50,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50" (1/1) ... [2021-05-06 11:35:50,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50" (1/1) ... [2021-05-06 11:35:50,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:35:50,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:35:50,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:35:50,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:35:50,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50" (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 [2021-05-06 11:35:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:35:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:35:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:35:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:35:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:35:50,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:35:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:35:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:35:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:35:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:35:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:35:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:35:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:35:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:35:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:35:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:35:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:35:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:35:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:35:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:35:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:35:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:35:51,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:35:51,141 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-06 11:35:51,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:35:51 BoogieIcfgContainer [2021-05-06 11:35:51,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:35:51,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:35:51,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:35:51,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:35:51,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:35:50" (1/3) ... [2021-05-06 11:35:51,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59570967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:35:51, skipping insertion in model container [2021-05-06 11:35:51,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:50" (2/3) ... [2021-05-06 11:35:51,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59570967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:35:51, skipping insertion in model container [2021-05-06 11:35:51,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:35:51" (3/3) ... [2021-05-06 11:35:51,163 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2021-05-06 11:35:51,168 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:35:51,171 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:35:51,186 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:35:51,203 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:35:51,203 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:35:51,203 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:35:51,203 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:35:51,203 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:35:51,203 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:35:51,203 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:35:51,203 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:35:51,215 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) [2021-05-06 11:35:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:35:51,221 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:51,221 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:51,222 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:51,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:51,226 INFO L82 PathProgramCache]: Analyzing trace with hash -990540922, now seen corresponding path program 1 times [2021-05-06 11:35:51,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:51,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745811759] [2021-05-06 11:35:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:51,291 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:35:51,492 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:51,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745811759] [2021-05-06 11:35:51,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1745811759] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:51,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:51,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 11:35:51,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775042152] [2021-05-06 11:35:51,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 11:35:51,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:51,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 11:35:51,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:35:51,512 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) [2021-05-06 11:35:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:51,594 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2021-05-06 11:35:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 11:35:51,597 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 [2021-05-06 11:35:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:51,602 INFO L225 Difference]: With dead ends: 38 [2021-05-06 11:35:51,603 INFO L226 Difference]: Without dead ends: 15 [2021-05-06 11:35:51,606 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:35:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-06 11:35:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-06 11:35:51,644 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) [2021-05-06 11:35:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-05-06 11:35:51,646 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-05-06 11:35:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:51,646 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-05-06 11:35:51,647 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) [2021-05-06 11:35:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-05-06 11:35:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:35:51,648 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:51,648 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:51,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:35:51,649 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:51,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1017323031, now seen corresponding path program 1 times [2021-05-06 11:35:51,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:51,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047025414] [2021-05-06 11:35:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:51,657 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:51,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:35:51,774 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:51,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047025414] [2021-05-06 11:35:51,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1047025414] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:51,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:51,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 11:35:51,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415924571] [2021-05-06 11:35:51,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 11:35:51,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:51,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 11:35:51,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:35:51,776 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) [2021-05-06 11:35:51,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:51,879 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-06 11:35:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 11:35:51,890 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 [2021-05-06 11:35:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:51,892 INFO L225 Difference]: With dead ends: 21 [2021-05-06 11:35:51,892 INFO L226 Difference]: Without dead ends: 16 [2021-05-06 11:35:51,893 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:35:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-06 11:35:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-06 11:35:51,898 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) [2021-05-06 11:35:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-06 11:35:51,899 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2021-05-06 11:35:51,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:51,899 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-06 11:35:51,900 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) [2021-05-06 11:35:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-06 11:35:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 11:35:51,900 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:51,900 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:51,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:35:51,901 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:51,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1873832261, now seen corresponding path program 1 times [2021-05-06 11:35:51,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:51,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658471713] [2021-05-06 11:35:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:51,971 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 82.5 percent of original size [2021-05-06 11:35:51,982 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,009 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-06 11:35:52,038 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 82.5 percent of original size 52 [2021-05-06 11:35:52,059 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:35:52,063 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:35:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:35:52,225 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:52,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658471713] [2021-05-06 11:35:52,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1658471713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:52,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:52,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 11:35:52,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385539867] [2021-05-06 11:35:52,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 11:35:52,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:52,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 11:35:52,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:35:52,227 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) [2021-05-06 11:35:52,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:52,359 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2021-05-06 11:35:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 11:35:52,360 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 [2021-05-06 11:35:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:52,361 INFO L225 Difference]: With dead ends: 26 [2021-05-06 11:35:52,361 INFO L226 Difference]: Without dead ends: 17 [2021-05-06 11:35:52,361 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 131.2ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-06 11:35:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-06 11:35:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-06 11:35:52,365 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) [2021-05-06 11:35:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-06 11:35:52,366 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2021-05-06 11:35:52,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:52,366 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-06 11:35:52,367 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) [2021-05-06 11:35:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-06 11:35:52,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-06 11:35:52,367 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:52,367 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:52,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:35:52,368 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:52,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:52,368 INFO L82 PathProgramCache]: Analyzing trace with hash -479695372, now seen corresponding path program 1 times [2021-05-06 11:35:52,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:52,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950520822] [2021-05-06 11:35:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:52,392 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 87.8 percent of original size [2021-05-06 11:35:52,402 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,409 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,418 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-06 11:35:52,419 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-06 11:35:52,421 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,424 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,433 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-06 11:35:52,434 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-06 11:35:52,452 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,461 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 11:35:52,470 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 87.8 percent of original size 43 [2021-05-06 11:35:52,508 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:35:52,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:35:52,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:35:52,580 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 97.0 percent of original size [2021-05-06 11:35:52,590 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,601 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,605 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,625 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-06 11:35:52,628 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,739 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 1 [2021-05-06 11:35:52,746 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-06 11:35:52,774 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-06 11:35:52,786 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:52,789 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:53,074 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 1 [2021-05-06 11:35:53,371 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-06 11:35:53,587 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-06 11:35:53,588 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-06 11:35:53,599 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:53,608 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-06 11:35:53,609 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-06 11:35:53,610 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:53,982 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-06 11:35:55,048 WARN L205 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 1 [2021-05-06 11:35:55,097 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-06 11:35:55,098 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-06 11:35:55,116 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:55,134 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-06 11:35:55,169 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:55,178 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:55,181 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:55,227 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 11:35:55,230 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:55,246 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-06 11:35:55,298 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-06 11:35:55,307 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:55,311 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:55,385 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-06 11:35:55,393 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:55,401 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-06 11:35:55,403 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-06 11:35:55,404 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:55,425 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-06 11:35:55,427 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-05-06 11:35:55,440 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:55,444 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-06 11:35:55,477 WARN L245 tifierPushTermWalker]: treesize reduction 10, result has 97.0 percent of original size 324 [2021-05-06 11:35:55,522 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:35:55,527 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:35:55,550 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-06 11:35:55,551 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 11:35:55,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-06 11:35:55,567 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-06 11:35:55,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:35:55 BoogieIcfgContainer [2021-05-06 11:35:55,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:35:55,569 INFO L168 Benchmark]: Toolchain (without parser) took 5071.74 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 139.6 MB in the beginning and 142.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 34.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:55,570 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 174.1 MB. Free memory is still 155.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:35:55,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.15 ms. Allocated memory is still 174.1 MB. Free memory was 139.4 MB in the beginning and 129.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:55,571 INFO L168 Benchmark]: Boogie Preprocessor took 64.15 ms. Allocated memory is still 174.1 MB. Free memory was 129.9 MB in the beginning and 157.0 MB in the end (delta: -27.2 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:55,574 INFO L168 Benchmark]: RCFGBuilder took 377.69 ms. Allocated memory is still 174.1 MB. Free memory was 157.0 MB in the beginning and 142.8 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:55,575 INFO L168 Benchmark]: TraceAbstraction took 4410.99 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 142.3 MB in the beginning and 142.2 MB in the end (delta: 19.3 kB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:55,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 174.1 MB. Free memory is still 155.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 197.15 ms. Allocated memory is still 174.1 MB. Free memory was 139.4 MB in the beginning and 129.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.15 ms. Allocated memory is still 174.1 MB. Free memory was 129.9 MB in the beginning and 157.0 MB in the end (delta: -27.2 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 377.69 ms. Allocated memory is still 174.1 MB. Free memory was 157.0 MB in the beginning and 142.8 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4410.99 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 142.3 MB in the beginning and 142.2 MB in the end (delta: 19.3 kB). Peak memory consumption was 36.7 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: 4355.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 357.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 37 SDslu, 22 SDs, 0 SdLazy, 45 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 245.3ms 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: 37.8ms 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...