/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:00:24,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:00:24,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:00:24,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 22:00:24,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:00:24,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:00:24,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:00:24,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:00:24,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:00:24,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:00:24,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:00:24,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:00:24,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:00:24,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:00:24,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:00:24,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:00:24,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:00:24,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:00:24,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:00:24,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:00:24,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:00:24,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:00:24,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:00:24,307 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:00:24,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:00:24,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:00:24,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:00:24,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:00:24,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:00:24,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:00:24,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:00:24,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:00:24,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:00:24,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:00:24,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:00:24,717 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:00:24,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-10-23 22:00:24,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e434646e2/01f9e619bd324d7cbe7fb3adb0b56020/FLAG6ebcd8b6d [2020-10-23 22:00:25,478 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:00:25,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-10-23 22:00:25,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e434646e2/01f9e619bd324d7cbe7fb3adb0b56020/FLAG6ebcd8b6d [2020-10-23 22:00:25,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e434646e2/01f9e619bd324d7cbe7fb3adb0b56020 [2020-10-23 22:00:25,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:00:25,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:00:25,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:00:25,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:00:25,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:00:25,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:00:25" (1/1) ... [2020-10-23 22:00:25,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50822c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:25, skipping insertion in model container [2020-10-23 22:00:25,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:00:25" (1/1) ... [2020-10-23 22:00:25,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:00:25,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:00:26,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:00:26,083 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:00:26,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:00:26,154 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:00:26,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:26 WrapperNode [2020-10-23 22:00:26,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:00:26,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:00:26,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:00:26,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:00:26,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:26" (1/1) ... [2020-10-23 22:00:26,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:26" (1/1) ... [2020-10-23 22:00:26,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:26" (1/1) ... [2020-10-23 22:00:26,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:26" (1/1) ... [2020-10-23 22:00:26,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:26" (1/1) ... [2020-10-23 22:00:26,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:26" (1/1) ... [2020-10-23 22:00:26,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:26" (1/1) ... [2020-10-23 22:00:26,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:00:26,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:00:26,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:00:26,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:00:26,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:26" (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 [2020-10-23 22:00:26,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:00:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:00:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:00:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:00:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:00:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:00:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:00:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:00:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:00:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:00:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:00:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:00:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:00:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:00:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:00:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:00:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:00:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:00:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:00:26,981 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:00:26,982 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 22:00:26,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:00:26 BoogieIcfgContainer [2020-10-23 22:00:26,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:00:26,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:00:26,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:00:26,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:00:26,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:00:25" (1/3) ... [2020-10-23 22:00:26,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714d8bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:00:26, skipping insertion in model container [2020-10-23 22:00:26,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:26" (2/3) ... [2020-10-23 22:00:26,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714d8bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:00:26, skipping insertion in model container [2020-10-23 22:00:26,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:00:26" (3/3) ... [2020-10-23 22:00:27,002 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-10-23 22:00:27,014 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:00:27,020 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:00:27,031 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:00:27,053 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:00:27,053 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:00:27,053 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:00:27,054 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:00:27,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:00:27,054 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:00:27,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:00:27,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:00:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-23 22:00:27,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 22:00:27,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:27,080 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, 1, 1, 1, 1, 1] [2020-10-23 22:00:27,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:27,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:27,087 INFO L82 PathProgramCache]: Analyzing trace with hash -198657501, now seen corresponding path program 1 times [2020-10-23 22:00:27,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:27,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771466505] [2020-10-23 22:00:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:27,170 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:27,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:27,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771466505] [2020-10-23 22:00:27,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:27,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 22:00:27,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567447941] [2020-10-23 22:00:27,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 22:00:27,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:27,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 22:00:27,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 22:00:27,538 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 6 states. [2020-10-23 22:00:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:28,040 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-10-23 22:00:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 22:00:28,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-23 22:00:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:28,052 INFO L225 Difference]: With dead ends: 72 [2020-10-23 22:00:28,053 INFO L226 Difference]: Without dead ends: 51 [2020-10-23 22:00:28,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-23 22:00:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-23 22:00:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-23 22:00:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-23 22:00:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-10-23 22:00:28,116 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 33 [2020-10-23 22:00:28,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:28,117 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-10-23 22:00:28,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 22:00:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-10-23 22:00:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-23 22:00:28,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:28,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:00:28,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:00:28,119 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:28,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:28,120 INFO L82 PathProgramCache]: Analyzing trace with hash -208239292, now seen corresponding path program 1 times [2020-10-23 22:00:28,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:28,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179971512] [2020-10-23 22:00:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:28,124 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:28,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:28,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179971512] [2020-10-23 22:00:28,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:28,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 22:00:28,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54762787] [2020-10-23 22:00:28,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 22:00:28,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:28,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 22:00:28,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 22:00:28,363 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 6 states. [2020-10-23 22:00:28,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:28,765 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-10-23 22:00:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 22:00:28,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-23 22:00:28,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:28,782 INFO L225 Difference]: With dead ends: 56 [2020-10-23 22:00:28,782 INFO L226 Difference]: Without dead ends: 53 [2020-10-23 22:00:28,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:00:28,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-23 22:00:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-10-23 22:00:28,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-23 22:00:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-10-23 22:00:28,806 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 38 [2020-10-23 22:00:28,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:28,806 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-10-23 22:00:28,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 22:00:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-10-23 22:00:28,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-23 22:00:28,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:28,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:00:28,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:00:28,809 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:28,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:28,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1167419530, now seen corresponding path program 1 times [2020-10-23 22:00:28,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:28,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211772158] [2020-10-23 22:00:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:28,814 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:28,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:28,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211772158] [2020-10-23 22:00:28,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:28,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:00:28,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553014714] [2020-10-23 22:00:29,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:00:29,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:29,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:00:29,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:00:29,002 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 8 states. [2020-10-23 22:00:29,577 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-10-23 22:00:29,728 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-23 22:00:30,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:30,136 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2020-10-23 22:00:30,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 22:00:30,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-23 22:00:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:30,137 INFO L225 Difference]: With dead ends: 81 [2020-10-23 22:00:30,138 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 22:00:30,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-23 22:00:30,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 22:00:30,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 22:00:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 22:00:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 22:00:30,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-10-23 22:00:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:30,141 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 22:00:30,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:00:30,141 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 22:00:30,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 22:00:30,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:00:30,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 22:00:30,636 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 27 [2020-10-23 22:00:30,965 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 27 [2020-10-23 22:00:31,429 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-10-23 22:00:31,805 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-10-23 22:00:32,247 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-10-23 22:00:32,470 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-10-23 22:00:32,747 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 4) the Hoare annotation is: true [2020-10-23 22:00:32,748 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-23 22:00:32,748 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 4) the Hoare annotation is: true [2020-10-23 22:00:32,748 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: true [2020-10-23 22:00:32,748 INFO L277 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: true [2020-10-23 22:00:32,748 INFO L277 CegarLoopResult]: At program point L4-4(line 4) the Hoare annotation is: true [2020-10-23 22:00:32,749 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:00:32,749 INFO L277 CegarLoopResult]: At program point L4-5(line 4) the Hoare annotation is: true [2020-10-23 22:00:32,749 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 22:00:32,749 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:00:32,749 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-23 22:00:32,750 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__return_100~0 |old(~__return_100~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 22:00:32,750 INFO L277 CegarLoopResult]: At program point L4(line 4) the Hoare annotation is: true [2020-10-23 22:00:32,750 INFO L277 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: true [2020-10-23 22:00:32,750 INFO L277 CegarLoopResult]: At program point L4-2(line 4) the Hoare annotation is: true [2020-10-23 22:00:32,750 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:00:32,750 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:00:32,750 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:00:32,751 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 22:00:32,751 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:00:32,751 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-23 22:00:32,751 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-23 22:00:32,751 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-23 22:00:32,751 INFO L274 CegarLoopResult]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2020-10-23 22:00:32,752 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-23 22:00:32,752 INFO L270 CegarLoopResult]: At program point L64(line 64) the Hoare annotation is: false [2020-10-23 22:00:32,752 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0) (= main_~__tmp_1~0 1))) [2020-10-23 22:00:32,752 INFO L270 CegarLoopResult]: At program point L64-1(line 64) the Hoare annotation is: false [2020-10-23 22:00:32,752 INFO L270 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__tmp_3~0 0)) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-10-23 22:00:32,753 INFO L270 CegarLoopResult]: At program point mainEXIT(lines 13 102) the Hoare annotation is: (or (= |old(~__return_100~0)| ~__return_100~0) (and (not (= main_~__tmp_1~0 0)) (not (= main_~__VERIFIER_assert__cond~0 0)))) [2020-10-23 22:00:32,753 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-23 22:00:32,753 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false [2020-10-23 22:00:32,753 INFO L270 CegarLoopResult]: At program point L48-1(line 48) the Hoare annotation is: false [2020-10-23 22:00:32,753 INFO L270 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse4 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse4 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= main_~__tmp_2~0 0))) (.cse3 (< 0 .cse4))) (or (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0))) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1))))) [2020-10-23 22:00:32,754 INFO L270 CegarLoopResult]: At program point L69(lines 39 89) the Hoare annotation is: (let ((.cse3 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse3 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (< 0 .cse3))) (or (and .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)) (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse2 (not (= main_~__tmp_3~0 0)))))) [2020-10-23 22:00:32,754 INFO L270 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0) (= main_~__tmp_1~0 1))) [2020-10-23 22:00:32,754 INFO L270 CegarLoopResult]: At program point L94(line 94) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2020-10-23 22:00:32,754 INFO L270 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__tmp_3~0 0)) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-10-23 22:00:32,755 INFO L270 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: (let ((.cse5 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse5 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= main_~__tmp_2~0 0))) (.cse3 (< 0 .cse5)) (.cse4 (not (= main_~__VERIFIER_assert__cond~1 0)))) (or (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0)) .cse4) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) .cse4 (= main_~__tmp_1~0 1))))) [2020-10-23 22:00:32,755 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-23 22:00:32,755 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-23 22:00:32,755 INFO L270 CegarLoopResult]: At program point L78(line 78) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-10-23 22:00:32,756 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse4 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse4 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= main_~__tmp_2~0 0))) (.cse3 (< 0 .cse4))) (or (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)) (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0)))))) [2020-10-23 22:00:32,756 INFO L270 CegarLoopResult]: At program point L33(lines 33 89) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0) (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1))) [2020-10-23 22:00:32,756 INFO L270 CegarLoopResult]: At program point L95(lines 14 102) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-10-23 22:00:32,756 INFO L270 CegarLoopResult]: At program point L62(lines 62 70) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__tmp_3~0 0)) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-10-23 22:00:32,756 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2020-10-23 22:00:32,757 INFO L270 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-10-23 22:00:32,757 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2020-10-23 22:00:32,757 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-23 22:00:32,757 INFO L270 CegarLoopResult]: At program point L83(line 83) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-10-23 22:00:32,757 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-23 22:00:32,758 INFO L270 CegarLoopResult]: At program point L79(lines 52 87) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-10-23 22:00:32,758 INFO L270 CegarLoopResult]: At program point L46(lines 46 87) the Hoare annotation is: (let ((.cse5 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse5 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= main_~__tmp_2~0 0))) (.cse3 (< 0 .cse5)) (.cse4 (not (= main_~__VERIFIER_assert__cond~1 0)))) (or (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0)) .cse4) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) .cse4 (= main_~__tmp_1~0 1))))) [2020-10-23 22:00:32,758 INFO L270 CegarLoopResult]: At program point mainFINAL(lines 13 102) the Hoare annotation is: (or (= |old(~__return_100~0)| ~__return_100~0) (and (not (= main_~__tmp_1~0 0)) (not (= main_~__VERIFIER_assert__cond~0 0)))) [2020-10-23 22:00:32,758 INFO L270 CegarLoopResult]: At program point L75(line 75) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-10-23 22:00:32,759 INFO L270 CegarLoopResult]: At program point L100(line 100) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-23 22:00:32,759 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2020-10-23 22:00:32,759 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 102) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-23 22:00:32,759 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-10-23 22:00:32,759 INFO L270 CegarLoopResult]: At program point L26(lines 26 96) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2020-10-23 22:00:32,760 INFO L270 CegarLoopResult]: At program point L84(line 84) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-10-23 22:00:32,760 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-23 22:00:32,760 INFO L270 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-23 22:00:32,760 INFO L270 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-10-23 22:00:32,760 INFO L270 CegarLoopResult]: At program point L76(lines 76 85) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 (+ main_~main__i~0 1)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-10-23 22:00:32,760 INFO L270 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (let ((.cse3 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse3 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (< 0 .cse3))) (or (and .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)) (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse2 (not (= main_~__tmp_3~0 0)))))) [2020-10-23 22:00:32,761 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: false [2020-10-23 22:00:32,761 INFO L270 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: false [2020-10-23 22:00:32,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:00:32 BoogieIcfgContainer [2020-10-23 22:00:32,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:00:32,786 INFO L168 Benchmark]: Toolchain (without parser) took 6967.30 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 127.5 MB in the beginning and 155.8 MB in the end (delta: -28.3 MB). Peak memory consumption was 120.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:32,787 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 117.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:00:32,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.16 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:32,788 INFO L168 Benchmark]: Boogie Preprocessor took 68.02 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:32,789 INFO L168 Benchmark]: RCFGBuilder took 762.42 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 131.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:32,790 INFO L168 Benchmark]: TraceAbstraction took 5790.92 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 130.6 MB in the beginning and 155.8 MB in the end (delta: -25.2 MB). Peak memory consumption was 122.7 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:32,794 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 117.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 329.16 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.02 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 762.42 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 131.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5790.92 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 130.6 MB in the beginning and 155.8 MB in the end (delta: -25.2 MB). Peak memory consumption was 122.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: \old(__return_100) == __return_100 && 0 < main__i + 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((main__i + 1 <= main__nlen && !(__tmp_1 == 0)) && \old(__return_100) == __return_100) && !(__VERIFIER_assert__cond == 0)) && !(__tmp_2 == 0)) && 0 < main__i + 1) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((main__i + 1 <= main__nlen && \old(__return_100) == __return_100) && 0 < main__i + 1) && __VERIFIER_assert__cond == 1) && __tmp_1 == 1) || ((((((main__i + 1 <= main__nlen && !(__tmp_1 == 0)) && \old(__return_100) == __return_100) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && !(__tmp_3 == 0)) - ProcedureContractResult [Line: 4]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: \old(__return_100) == __return_100 || (!(__tmp_1 == 0) && !(__VERIFIER_assert__cond == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 152 SDtfs, 323 SDslu, 185 SDs, 0 SdLazy, 331 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 64 LocationsWithAnnotation, 72 PreInvPairs, 109 NumberOfFragments, 907 HoareAnnotationTreeSize, 72 FomulaSimplifications, 2837 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 64 FomulaSimplificationsInter, 1667 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, 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 proved your program to be correct! Received shutdown request...