/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:16:46,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:16:46,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:16:46,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:16:46,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:16:46,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:16:46,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:16:46,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:16:46,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:16:46,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:16:46,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:16:46,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:16:46,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:16:46,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:16:46,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:16:46,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:16:46,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:16:46,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:16:46,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:16:46,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:16:46,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:16:46,501 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:16:46,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:16:46,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:16:46,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:16:46,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:16:46,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:16:46,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:16:46,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:16:46,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:16:46,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:16:46,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:16:46,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:16:46,509 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:16:46,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:16:46,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:16:46,510 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:16:46,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:16:46,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:16:46,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:46,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:16:46,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:16:46,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:16:46,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:16:46,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:16:46,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:16:46,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:16:46,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:16:46,963 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:16:46,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2021-02-24 00:16:47,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedcc8891/4d915636349f4968af1a9a088f47064c/FLAG4285cd718 [2021-02-24 00:16:47,631 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:16:47,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2021-02-24 00:16:47,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedcc8891/4d915636349f4968af1a9a088f47064c/FLAG4285cd718 [2021-02-24 00:16:48,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedcc8891/4d915636349f4968af1a9a088f47064c [2021-02-24 00:16:48,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:16:48,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:16:48,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:48,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:16:48,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:16:48,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:48" (1/1) ... [2021-02-24 00:16:48,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c5655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48, skipping insertion in model container [2021-02-24 00:16:48,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:48" (1/1) ... [2021-02-24 00:16:48,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:16:48,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:16:48,276 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i[849,862] [2021-02-24 00:16:48,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:48,297 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:16:48,311 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i[849,862] [2021-02-24 00:16:48,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:48,330 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:16:48,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48 WrapperNode [2021-02-24 00:16:48,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:48,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:16:48,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:16:48,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:16:48,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48" (1/1) ... [2021-02-24 00:16:48,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48" (1/1) ... [2021-02-24 00:16:48,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48" (1/1) ... [2021-02-24 00:16:48,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48" (1/1) ... [2021-02-24 00:16:48,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48" (1/1) ... [2021-02-24 00:16:48,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48" (1/1) ... [2021-02-24 00:16:48,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48" (1/1) ... [2021-02-24 00:16:48,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:16:48,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:16:48,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:16:48,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:16:48,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48" (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 [2021-02-24 00:16:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:16:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:16:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:16:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:16:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:16:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:16:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:16:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 00:16:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 00:16:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:16:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:16:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:16:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:16:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:16:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:16:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:16:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:16:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:16:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:16:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:16:48,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:16:48,742 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:16:48,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:48 BoogieIcfgContainer [2021-02-24 00:16:48,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:16:48,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:16:48,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:16:48,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:16:48,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:16:48" (1/3) ... [2021-02-24 00:16:48,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501f3200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:48, skipping insertion in model container [2021-02-24 00:16:48,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:48" (2/3) ... [2021-02-24 00:16:48,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501f3200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:48, skipping insertion in model container [2021-02-24 00:16:48,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:48" (3/3) ... [2021-02-24 00:16:48,753 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2021-02-24 00:16:48,760 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:16:48,765 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:16:48,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:16:48,856 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:16:48,859 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:16:48,859 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:16:48,859 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:16:48,860 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:16:48,860 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:16:48,860 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:16:48,860 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:16:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-02-24 00:16:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-24 00:16:48,906 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:48,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:48,907 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:48,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1347732111, now seen corresponding path program 1 times [2021-02-24 00:16:48,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:48,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989609726] [2021-02-24 00:16:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:49,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:49,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:49,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:49,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:49,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:49,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:49,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989609726] [2021-02-24 00:16:49,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:49,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:16:49,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111540996] [2021-02-24 00:16:49,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:16:49,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:49,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:16:49,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:49,254 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2021-02-24 00:16:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:49,343 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-02-24 00:16:49,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:16:49,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-02-24 00:16:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:49,355 INFO L225 Difference]: With dead ends: 47 [2021-02-24 00:16:49,355 INFO L226 Difference]: Without dead ends: 28 [2021-02-24 00:16:49,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:49,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-24 00:16:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-02-24 00:16:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-24 00:16:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-02-24 00:16:49,408 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 23 [2021-02-24 00:16:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:49,408 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-02-24 00:16:49,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:16:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-02-24 00:16:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-24 00:16:49,410 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:49,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:49,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:49,411 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:49,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1339420422, now seen corresponding path program 1 times [2021-02-24 00:16:49,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:49,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8477915] [2021-02-24 00:16:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:49,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:49,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:49,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:49,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:16:49,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:49,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:49,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:49,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:49,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:49,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:49,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:49,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:49,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:49,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8477915] [2021-02-24 00:16:49,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:49,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 00:16:49,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088575486] [2021-02-24 00:16:49,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:16:49,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:49,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:16:49,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:16:49,614 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2021-02-24 00:16:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:49,928 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-02-24 00:16:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:16:49,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-02-24 00:16:49,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:49,930 INFO L225 Difference]: With dead ends: 35 [2021-02-24 00:16:49,931 INFO L226 Difference]: Without dead ends: 30 [2021-02-24 00:16:49,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:16:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-24 00:16:49,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-02-24 00:16:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-24 00:16:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-02-24 00:16:49,944 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 23 [2021-02-24 00:16:49,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:49,945 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-02-24 00:16:49,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:16:49,945 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-02-24 00:16:49,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-24 00:16:49,946 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:49,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:49,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:49,947 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:49,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:49,948 INFO L82 PathProgramCache]: Analyzing trace with hash -924971526, now seen corresponding path program 1 times [2021-02-24 00:16:49,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:49,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13222520] [2021-02-24 00:16:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:50,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:50,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:50,023 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-24 00:16:50,024 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-24 00:16:50,041 WARN L141 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-02-24 00:16:50,042 WARN L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-02-24 00:16:50,071 WARN L141 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-02-24 00:16:50,074 WARN L147 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size 32 [2021-02-24 00:16:50,135 WARN L141 QuantifierPusher]: treesize reduction 16, result has 55.6 percent of original size [2021-02-24 00:16:50,136 WARN L147 QuantifierPusher]: treesize reduction 16, result has 55.6 percent of original size 20 [2021-02-24 00:16:50,156 WARN L141 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size [2021-02-24 00:16:50,157 WARN L147 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size 21 [2021-02-24 00:16:50,177 WARN L141 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-02-24 00:16:50,178 WARN L147 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size 13 [2021-02-24 00:16:50,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:50,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:50,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:50,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:50,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:50,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13222520] [2021-02-24 00:16:50,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:16:50,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:16:50,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094995900] [2021-02-24 00:16:50,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:16:50,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:50,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:16:50,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:16:50,275 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 12 states. [2021-02-24 00:16:50,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:50,752 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-02-24 00:16:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:16:50,752 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2021-02-24 00:16:50,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:50,754 INFO L225 Difference]: With dead ends: 40 [2021-02-24 00:16:50,754 INFO L226 Difference]: Without dead ends: 35 [2021-02-24 00:16:50,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-02-24 00:16:50,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-24 00:16:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-02-24 00:16:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-24 00:16:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-02-24 00:16:50,766 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 28 [2021-02-24 00:16:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:50,767 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-02-24 00:16:50,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:16:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-02-24 00:16:50,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-24 00:16:50,768 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:50,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:50,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:16:50,769 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:50,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2036914298, now seen corresponding path program 2 times [2021-02-24 00:16:50,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:50,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067675225] [2021-02-24 00:16:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:50,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:50,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:50,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:16:50,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:16:50,888 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:16:50,889 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:16:50,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:16:50,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:50,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:16:50,948 WARN L141 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-02-24 00:16:50,949 WARN L147 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size 19 [2021-02-24 00:16:50,978 WARN L141 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-02-24 00:16:50,979 WARN L147 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size 19 [2021-02-24 00:16:51,005 WARN L141 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size [2021-02-24 00:16:51,006 WARN L147 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size 21 [2021-02-24 00:16:51,029 WARN L141 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-02-24 00:16:51,030 WARN L147 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size 13 [2021-02-24 00:16:51,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:51,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:51,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:51,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:51,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:51,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:51,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:51,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:51,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:51,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067675225] [2021-02-24 00:16:51,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:16:51,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-24 00:16:51,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518830077] [2021-02-24 00:16:51,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 00:16:51,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:51,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 00:16:51,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:16:51,153 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 15 states. [2021-02-24 00:16:52,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:52,040 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-02-24 00:16:52,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:16:52,040 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 33 [2021-02-24 00:16:52,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:52,041 INFO L225 Difference]: With dead ends: 45 [2021-02-24 00:16:52,042 INFO L226 Difference]: Without dead ends: 40 [2021-02-24 00:16:52,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2021-02-24 00:16:52,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-24 00:16:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-02-24 00:16:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-24 00:16:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-02-24 00:16:52,081 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 33 [2021-02-24 00:16:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:52,082 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-02-24 00:16:52,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 00:16:52,084 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-02-24 00:16:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:16:52,091 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:52,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:52,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:16:52,091 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:52,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:52,093 INFO L82 PathProgramCache]: Analyzing trace with hash 210511226, now seen corresponding path program 3 times [2021-02-24 00:16:52,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:52,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927591010] [2021-02-24 00:16:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:52,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:52,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:52,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:16:52,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:16:52,227 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:16:52,228 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:16:52,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:16:52,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 00:16:52,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 00:16:52,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:16:52,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:16:52,300 WARN L141 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-02-24 00:16:52,301 WARN L147 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size 19 [2021-02-24 00:16:52,343 WARN L141 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-02-24 00:16:52,346 WARN L147 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size 19 [2021-02-24 00:16:52,387 WARN L141 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size [2021-02-24 00:16:52,389 WARN L147 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size 21 [2021-02-24 00:16:52,425 WARN L141 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-02-24 00:16:52,427 WARN L147 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size 13 [2021-02-24 00:16:52,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:52,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:52,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:52,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:52,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:52,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-24 00:16:52,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927591010] [2021-02-24 00:16:52,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:16:52,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-24 00:16:52,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778622583] [2021-02-24 00:16:52,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 00:16:52,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:52,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 00:16:52,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:16:52,531 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 17 states. [2021-02-24 00:16:53,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:53,565 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-02-24 00:16:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-24 00:16:53,565 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2021-02-24 00:16:53,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:53,566 INFO L225 Difference]: With dead ends: 39 [2021-02-24 00:16:53,566 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:16:53,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2021-02-24 00:16:53,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:16:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:16:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:16:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:16:53,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-02-24 00:16:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:53,568 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:16:53,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 00:16:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:16:53,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:16:53,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:16:53,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:16:54,139 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 00:16:54,139 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 00:16:54,139 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 00:16:54,139 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 00:16:54,139 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 00:16:54,140 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:16:54,140 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:16:54,140 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 00:16:54,140 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:16:54,140 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 00:16:54,140 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 00:16:54,141 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-24 00:16:54,141 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 00:16:54,141 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:16:54,141 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:16:54,141 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:16:54,141 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:16:54,141 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:16:54,142 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (= main_~sn~0 0) [2021-02-24 00:16:54,142 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 22 29) the Hoare annotation is: true [2021-02-24 00:16:54,142 INFO L192 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-02-24 00:16:54,142 INFO L192 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: true [2021-02-24 00:16:54,142 INFO L185 CegarLoopUtils]: At program point L25-3(lines 25 27) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) [2021-02-24 00:16:54,142 INFO L192 CegarLoopUtils]: At program point L23-2(line 23) the Hoare annotation is: true [2021-02-24 00:16:54,143 INFO L185 CegarLoopUtils]: At program point L25-4(line 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 2 |main_#t~post4|))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0) (<= .cse1 main_~sn~0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)) (<= main_~sn~0 .cse1))) [2021-02-24 00:16:54,143 INFO L192 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: true [2021-02-24 00:16:54,143 INFO L185 CegarLoopUtils]: At program point L25-5(line 25) the Hoare annotation is: (let ((.cse2 (+ main_~sn~0 2)) (.cse1 (* 2 main_~i~0)) (.cse0 (* 2 |main_#t~post4|))) (and (<= .cse0 main_~sn~0) (<= .cse1 .cse2) (<= .cse2 .cse1) (< main_~sn~0 (+ (* 2 main_~n~0) 1)) (<= main_~sn~0 .cse0))) [2021-02-24 00:16:54,143 INFO L185 CegarLoopUtils]: At program point L25-6(lines 25 27) the Hoare annotation is: (or (let ((.cse1 (+ main_~sn~0 2)) (.cse0 (* 2 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) (and (= main_~sn~0 0) (= main_~i~0 1))) [2021-02-24 00:16:54,143 INFO L185 CegarLoopUtils]: At program point L25-7(lines 25 27) the Hoare annotation is: (or (= main_~sn~0 0) (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1))))) [2021-02-24 00:16:54,144 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 22 29) the Hoare annotation is: true [2021-02-24 00:16:54,144 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2021-02-24 00:16:54,145 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 (* 2 main_~n~0)))) [2021-02-24 00:16:54,145 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (= main_~sn~0 0) [2021-02-24 00:16:54,145 INFO L192 CegarLoopUtils]: At program point L24-1(line 24) the Hoare annotation is: true [2021-02-24 00:16:54,145 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:16:54,145 INFO L185 CegarLoopUtils]: At program point L16(lines 16 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:16:54,145 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:16:54,146 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2021-02-24 00:16:54,146 INFO L192 CegarLoopUtils]: At program point L16-2(lines 15 20) the Hoare annotation is: true [2021-02-24 00:16:54,146 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 15 20) the Hoare annotation is: true [2021-02-24 00:16:54,146 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:16:54,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:54 BoogieIcfgContainer [2021-02-24 00:16:54,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:54,177 INFO L168 Benchmark]: Toolchain (without parser) took 6158.39 ms. Allocated memory was 166.7 MB in the beginning and 264.2 MB in the end (delta: 97.5 MB). Free memory was 143.7 MB in the beginning and 223.6 MB in the end (delta: -79.9 MB). Peak memory consumption was 121.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:54,178 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 166.7 MB. Free memory is still 139.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:54,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.57 ms. Allocated memory is still 166.7 MB. Free memory was 142.7 MB in the beginning and 133.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:54,180 INFO L168 Benchmark]: Boogie Preprocessor took 33.00 ms. Allocated memory is still 166.7 MB. Free memory was 133.0 MB in the beginning and 131.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:54,180 INFO L168 Benchmark]: RCFGBuilder took 378.05 ms. Allocated memory is still 166.7 MB. Free memory was 131.6 MB in the beginning and 117.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:54,181 INFO L168 Benchmark]: TraceAbstraction took 5424.04 ms. Allocated memory was 166.7 MB in the beginning and 264.2 MB in the end (delta: 97.5 MB). Free memory was 117.0 MB in the beginning and 223.6 MB in the end (delta: -106.7 MB). Peak memory consumption was 94.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:54,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 166.7 MB. Free memory is still 139.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 302.57 ms. Allocated memory is still 166.7 MB. Free memory was 142.7 MB in the beginning and 133.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.00 ms. Allocated memory is still 166.7 MB. Free memory was 133.0 MB in the beginning and 131.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 378.05 ms. Allocated memory is still 166.7 MB. Free memory was 131.6 MB in the beginning and 117.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5424.04 ms. Allocated memory was 166.7 MB in the beginning and 264.2 MB in the end (delta: 97.5 MB). Free memory was 117.0 MB in the beginning and 223.6 MB in the end (delta: -106.7 MB). Peak memory consumption was 94.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((2 * i <= sn + 2 && sn + 2 <= 2 * i) && sn < 2 * n + 1) || (sn == 0 && i == 1) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 130 SDslu, 384 SDs, 0 SdLazy, 529 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 64 PreInvPairs, 89 NumberOfFragments, 218 HoareAnnotationTreeSize, 64 FomulaSimplifications, 1206 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 36 FomulaSimplificationsInter, 765 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 25523 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 2/26 InterpolantCoveringCapability, 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 proved your program to be correct! Received shutdown request...