/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 00:07:13,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 00:07:13,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 00:07:13,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 00:07:13,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 00:07:13,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 00:07:13,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 00:07:13,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 00:07:13,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 00:07:13,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 00:07:13,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 00:07:13,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 00:07:13,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 00:07:13,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 00:07:13,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 00:07:13,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 00:07:13,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 00:07:13,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 00:07:13,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 00:07:13,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 00:07:13,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-06 00:07:13,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 00:07:13,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 00:07:13,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 00:07:13,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 00:07:13,294 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 00:07:13,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 00:07:13,294 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 00:07:13,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 00:07:13,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 00:07:13,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 00:07:13,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 00:07:13,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 00:07:13,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 00:07:13,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 00:07:13,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 00:07:13,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 00:07:13,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 00:07:13,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 00:07:13,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 00:07:13,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 00:07:13,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 00:07:13,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 00:07:13,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 00:07:13,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 00:07:13,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 00:07:13,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 00:07:13,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 00:07:13,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 00:07:13,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 00:07:13,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 00:07:13,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 00:07:13,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 00:07:13,607 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 00:07:13,608 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 00:07:13,609 INFO L432 ainManager$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 [2021-05-06 00:07:13,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/187f4c5f7/caeb00ebdd2741db971d9233bd0134f8/FLAG125d491a8 [2021-05-06 00:07:14,112 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 00:07:14,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2021-05-06 00:07:14,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/187f4c5f7/caeb00ebdd2741db971d9233bd0134f8/FLAG125d491a8 [2021-05-06 00:07:14,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/187f4c5f7/caeb00ebdd2741db971d9233bd0134f8 [2021-05-06 00:07:14,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 00:07:14,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 00:07:14,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 00:07:14,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 00:07:14,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 00:07:14,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:07:14" (1/1) ... [2021-05-06 00:07:14,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c5130e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14, skipping insertion in model container [2021-05-06 00:07:14,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:07:14" (1/1) ... [2021-05-06 00:07:14,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 00:07:14,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 00:07:14,336 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[854,867] [2021-05-06 00:07:14,342 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2021-05-06 00:07:14,344 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2021-05-06 00:07:14,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 00:07:14,379 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 00:07:14,396 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[854,867] [2021-05-06 00:07:14,399 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2021-05-06 00:07:14,403 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2021-05-06 00:07:14,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 00:07:14,441 INFO L208 MainTranslator]: Completed translation [2021-05-06 00:07:14,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14 WrapperNode [2021-05-06 00:07:14,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 00:07:14,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 00:07:14,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 00:07:14,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 00:07:14,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14" (1/1) ... [2021-05-06 00:07:14,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14" (1/1) ... [2021-05-06 00:07:14,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14" (1/1) ... [2021-05-06 00:07:14,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14" (1/1) ... [2021-05-06 00:07:14,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14" (1/1) ... [2021-05-06 00:07:14,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14" (1/1) ... [2021-05-06 00:07:14,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14" (1/1) ... [2021-05-06 00:07:14,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 00:07:14,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 00:07:14,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 00:07:14,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 00:07:14,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 00:07:14,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 00:07:14,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 00:07:14,556 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 00:07:14,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 00:07:14,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 00:07:14,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 00:07:14,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 00:07:14,557 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 00:07:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 00:07:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 00:07:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 00:07:14,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 00:07:14,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 00:07:14,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 00:07:14,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 00:07:14,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 00:07:14,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 00:07:14,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 00:07:14,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 00:07:14,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 00:07:14,847 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 00:07:14,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:07:14 BoogieIcfgContainer [2021-05-06 00:07:14,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 00:07:14,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 00:07:14,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 00:07:14,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 00:07:14,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 12:07:14" (1/3) ... [2021-05-06 00:07:14,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2739c464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:07:14, skipping insertion in model container [2021-05-06 00:07:14,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:14" (2/3) ... [2021-05-06 00:07:14,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2739c464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:07:14, skipping insertion in model container [2021-05-06 00:07:14,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:07:14" (3/3) ... [2021-05-06 00:07:14,854 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2021-05-06 00:07:14,858 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 00:07:14,861 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-05-06 00:07:14,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-06 00:07:14,899 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 00:07:14,899 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 00:07:14,899 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 00:07:14,899 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 00:07:14,899 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 00:07:14,899 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 00:07:14,900 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 00:07:14,900 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 00:07:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 00:07:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-05-06 00:07:14,916 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:14,916 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:14,917 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:14,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:14,921 INFO L82 PathProgramCache]: Analyzing trace with hash 557366739, now seen corresponding path program 1 times [2021-05-06 00:07:14,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:14,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116372194] [2021-05-06 00:07:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:15,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:15,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116372194] [2021-05-06 00:07:15,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116372194] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 00:07:15,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 00:07:15,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 00:07:15,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84229542] [2021-05-06 00:07:15,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 00:07:15,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:15,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 00:07:15,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 00:07:15,187 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:15,376 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-05-06 00:07:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 00:07:15,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-05-06 00:07:15,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:15,383 INFO L225 Difference]: With dead ends: 30 [2021-05-06 00:07:15,383 INFO L226 Difference]: Without dead ends: 18 [2021-05-06 00:07:15,385 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 191.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-06 00:07:15,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-06 00:07:15,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-06 00:07:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-05-06 00:07:15,413 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2021-05-06 00:07:15,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:15,413 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-05-06 00:07:15,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:15,413 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-05-06 00:07:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 00:07:15,414 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:15,414 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:15,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 00:07:15,414 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:15,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:15,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1241381707, now seen corresponding path program 1 times [2021-05-06 00:07:15,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:15,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042503368] [2021-05-06 00:07:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:15,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:15,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:15,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042503368] [2021-05-06 00:07:15,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042503368] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 00:07:15,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 00:07:15,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 00:07:15,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493771013] [2021-05-06 00:07:15,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 00:07:15,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:15,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 00:07:15,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 00:07:15,512 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:15,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:15,666 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 00:07:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 00:07:15,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 00:07:15,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:15,668 INFO L225 Difference]: With dead ends: 19 [2021-05-06 00:07:15,668 INFO L226 Difference]: Without dead ends: 17 [2021-05-06 00:07:15,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 00:07:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-06 00:07:15,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-05-06 00:07:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-06 00:07:15,674 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-05-06 00:07:15,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:15,674 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-06 00:07:15,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-06 00:07:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 00:07:15,675 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:15,675 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:15,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 00:07:15,676 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:15,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:15,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1033184217, now seen corresponding path program 1 times [2021-05-06 00:07:15,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:15,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918044639] [2021-05-06 00:07:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:15,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:15,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:15,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918044639] [2021-05-06 00:07:15,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918044639] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 00:07:15,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 00:07:15,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 00:07:15,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727424160] [2021-05-06 00:07:15,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 00:07:15,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:15,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 00:07:15,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 00:07:15,804 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:16,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:16,099 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-05-06 00:07:16,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 00:07:16,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-06 00:07:16,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:16,101 INFO L225 Difference]: With dead ends: 25 [2021-05-06 00:07:16,101 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 00:07:16,102 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 302.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-06 00:07:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 00:07:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 00:07:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 00:07:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 00:07:16,103 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-06 00:07:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:16,103 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 00:07:16,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 00:07:16,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 00:07:16,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 00:07:16,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 00:07:16,397 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-05-06 00:07:16,397 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-05-06 00:07:16,397 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-05-06 00:07:16,397 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-06 00:07:16,397 INFO L194 CegarLoopUtils]: 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|)) [2021-05-06 00:07:16,398 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-06 00:07:16,398 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-06 00:07:16,398 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 00:07:16,398 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 00:07:16,398 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-06 00:07:16,398 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-05-06 00:07:16,398 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-05-06 00:07:16,398 INFO L198 CegarLoopUtils]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-05-06 00:07:16,398 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-05-06 00:07:16,398 INFO L198 CegarLoopUtils]: For program point L33(lines 33 89) no Hoare annotation was computed. [2021-05-06 00:07:16,398 INFO L198 CegarLoopUtils]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-05-06 00:07:16,399 INFO L198 CegarLoopUtils]: For program point L64(line 64) no Hoare annotation was computed. [2021-05-06 00:07:16,399 INFO L194 CegarLoopUtils]: 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))) [2021-05-06 00:07:16,399 INFO L198 CegarLoopUtils]: For program point L62(lines 62 70) no Hoare annotation was computed. [2021-05-06 00:07:16,399 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 13 102) no Hoare annotation was computed. [2021-05-06 00:07:16,399 INFO L198 CegarLoopUtils]: For program point L48(line 48) no Hoare annotation was computed. [2021-05-06 00:07:16,399 INFO L194 CegarLoopUtils]: At program point L79(lines 52 87) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (< 0 (+ main_~main__i~0 1)) (< main_~main__i~0 main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2021-05-06 00:07:16,399 INFO L198 CegarLoopUtils]: For program point L46(lines 46 87) no Hoare annotation was computed. [2021-05-06 00:07:16,399 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 13 102) no Hoare annotation was computed. [2021-05-06 00:07:16,400 INFO L194 CegarLoopUtils]: At program point L69(lines 39 89) the Hoare annotation is: (let ((.cse0 (= |old(~__return_100~0)| ~__return_100~0)) (.cse1 (< 0 (+ main_~main__i~0 1))) (.cse2 (< main_~main__i~0 main_~main__nlen~0))) (or (and .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1)) (and .cse0 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse1 .cse2))) [2021-05-06 00:07:16,400 INFO L198 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-05-06 00:07:16,400 INFO L198 CegarLoopUtils]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2021-05-06 00:07:16,400 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 13 102) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2021-05-06 00:07:16,400 INFO L198 CegarLoopUtils]: For program point L26(lines 26 96) no Hoare annotation was computed. [2021-05-06 00:07:16,400 INFO L198 CegarLoopUtils]: For program point L76(lines 76 85) no Hoare annotation was computed. [2021-05-06 00:07:16,400 INFO L198 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-05-06 00:07:16,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 12:07:16 BoogieIcfgContainer [2021-05-06 00:07:16,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 00:07:16,414 INFO L168 Benchmark]: Toolchain (without parser) took 2263.16 ms. Allocated memory is still 189.8 MB. Free memory was 153.6 MB in the beginning and 67.4 MB in the end (delta: 86.2 MB). Peak memory consumption was 85.9 MB. Max. memory is 8.0 GB. [2021-05-06 00:07:16,415 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 189.8 MB. Free memory is still 170.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 00:07:16,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.61 ms. Allocated memory is still 189.8 MB. Free memory was 153.3 MB in the beginning and 171.6 MB in the end (delta: -18.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. [2021-05-06 00:07:16,416 INFO L168 Benchmark]: Boogie Preprocessor took 38.16 ms. Allocated memory is still 189.8 MB. Free memory was 171.6 MB in the beginning and 170.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 00:07:16,416 INFO L168 Benchmark]: RCFGBuilder took 365.99 ms. Allocated memory is still 189.8 MB. Free memory was 170.0 MB in the beginning and 153.8 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-06 00:07:16,417 INFO L168 Benchmark]: TraceAbstraction took 1564.11 ms. Allocated memory is still 189.8 MB. Free memory was 153.3 MB in the beginning and 67.4 MB in the end (delta: 85.9 MB). Peak memory consumption was 87.4 MB. Max. memory is 8.0 GB. [2021-05-06 00:07:16,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 189.8 MB. Free memory is still 170.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.61 ms. Allocated memory is still 189.8 MB. Free memory was 153.3 MB in the beginning and 171.6 MB in the end (delta: -18.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.16 ms. Allocated memory is still 189.8 MB. Free memory was 171.6 MB in the beginning and 170.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 365.99 ms. Allocated memory is still 189.8 MB. Free memory was 170.0 MB in the beginning and 153.8 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1564.11 ms. Allocated memory is still 189.8 MB. Free memory was 153.3 MB in the beginning and 67.4 MB in the end (delta: 85.9 MB). Peak memory consumption was 87.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 64]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1212.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.4ms, AutomataDifference: 666.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 291.5ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 91 SDslu, 43 SDs, 0 SdLazy, 83 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 633.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 22.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 107 HoareAnnotationTreeSize, 7 FomulaSimplifications, 547 FormulaSimplificationTreeSizeReduction, 78.4ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 185 FormulaSimplificationTreeSizeReductionInter, 205.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 12.5ms SsaConstructionTime, 53.8ms SatisfiabilityAnalysisTime, 342.1ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 3 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: (((\old(__return_100) == __return_100 && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && main__i < main__nlen) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((\old(__return_100) == __return_100 && 0 < main__i + 1) && main__i < main__nlen) && __VERIFIER_assert__cond == 1) || ((((\old(__return_100) == __return_100 && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && main__i < main__nlen) RESULT: Ultimate proved your program to be correct! Received shutdown request...