/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/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-b7b32d2 [2021-02-21 16:27:27,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:27:27,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:27:27,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:27:27,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:27:27,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:27:27,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:27:27,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:27:27,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:27:27,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:27:27,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:27:27,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:27:27,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:27:27,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:27:27,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:27:27,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:27:27,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:27:27,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:27:27,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:27:27,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:27:27,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:27:27,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:27:27,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:27:27,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:27:27,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:27:27,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:27:27,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:27:27,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:27:27,574 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 [2021-02-21 16:27:27,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:27:27,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:27:27,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:27:27,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:27:27,636 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:27:27,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:27:27,637 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:27:27,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:27:27,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:27:27,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:27:27,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:27:27,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:27:27,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:27:27,639 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:27:27,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:27:27,640 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:27:27,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:27:27,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:27:27,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:27:27,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:27:27,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:27:27,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:27:27,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:27:27,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:27:27,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:27:27,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:27:27,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:27:27,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:27:27,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:27:28,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:27:28,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:27:28,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:27:28,100 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:27:28,101 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:27:28,102 INFO L432 ainManager$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 [2021-02-21 16:27:28,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a1b07538/489eee519af34f9bbbd98930b0f2bf9f/FLAG4156fa6a5 [2021-02-21 16:27:28,772 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:27:28,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2021-02-21 16:27:28,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a1b07538/489eee519af34f9bbbd98930b0f2bf9f/FLAG4156fa6a5 [2021-02-21 16:27:29,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a1b07538/489eee519af34f9bbbd98930b0f2bf9f [2021-02-21 16:27:29,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:27:29,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:27:29,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:27:29,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:27:29,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:27:29,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:27:29" (1/1) ... [2021-02-21 16:27:29,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48dde7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29, skipping insertion in model container [2021-02-21 16:27:29,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:27:29" (1/1) ... [2021-02-21 16:27:29,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:27:29,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:27:29,410 WARN L226 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] [2021-02-21 16:27:29,416 WARN L226 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] [2021-02-21 16:27:29,419 WARN L226 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] [2021-02-21 16:27:29,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:27:29,434 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:27:29,453 WARN L226 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] [2021-02-21 16:27:29,455 WARN L226 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] [2021-02-21 16:27:29,457 WARN L226 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] [2021-02-21 16:27:29,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:27:29,480 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:27:29,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29 WrapperNode [2021-02-21 16:27:29,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:27:29,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:27:29,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:27:29,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:27:29,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29" (1/1) ... [2021-02-21 16:27:29,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29" (1/1) ... [2021-02-21 16:27:29,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29" (1/1) ... [2021-02-21 16:27:29,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29" (1/1) ... [2021-02-21 16:27:29,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29" (1/1) ... [2021-02-21 16:27:29,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29" (1/1) ... [2021-02-21 16:27:29,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29" (1/1) ... [2021-02-21 16:27:29,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:27:29,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:27:29,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:27:29,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:27:29,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:27:29,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:27:29,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:27:29,628 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:27:29,628 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:27:29,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:27:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:27:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:27:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:27:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:27:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:27:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:27:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:27:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:27:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:27:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:27:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:27:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:27:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:27:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:27:30,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:27:30,067 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 16:27:30,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:27:30 BoogieIcfgContainer [2021-02-21 16:27:30,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:27:30,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:27:30,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:27:30,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:27:30,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:27:29" (1/3) ... [2021-02-21 16:27:30,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60eda140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:27:30, skipping insertion in model container [2021-02-21 16:27:30,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:27:29" (2/3) ... [2021-02-21 16:27:30,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60eda140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:27:30, skipping insertion in model container [2021-02-21 16:27:30,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:27:30" (3/3) ... [2021-02-21 16:27:30,083 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2021-02-21 16:27:30,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:27:30,096 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-21 16:27:30,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-21 16:27:30,185 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:27:30,185 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:27:30,186 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:27:30,186 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:27:30,186 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:27:30,186 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:27:30,186 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:27:30,187 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:27:30,209 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-02-21 16:27:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-21 16:27:30,213 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:27:30,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:27:30,215 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:27:30,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:27:30,223 INFO L82 PathProgramCache]: Analyzing trace with hash 557366739, now seen corresponding path program 1 times [2021-02-21 16:27:30,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:27:30,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348325949] [2021-02-21 16:27:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:27:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:27:30,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:30,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:27:30,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:30,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:27:30,461 WARN L141 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size [2021-02-21 16:27:30,462 WARN L147 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size 3 [2021-02-21 16:27:30,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:30,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:27:30,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:30,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:27:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:27:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:27:30,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:30,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:27:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:27:30,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348325949] [2021-02-21 16:27:30,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:27:30,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:27:30,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504913235] [2021-02-21 16:27:30,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:27:30,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:27:30,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:27:30,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:27:30,629 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2021-02-21 16:27:30,928 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-21 16:27:31,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:27:31,081 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-02-21 16:27:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 16:27:31,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-02-21 16:27:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:27:31,092 INFO L225 Difference]: With dead ends: 30 [2021-02-21 16:27:31,092 INFO L226 Difference]: Without dead ends: 18 [2021-02-21 16:27:31,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-02-21 16:27:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-02-21 16:27:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-02-21 16:27:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-02-21 16:27:31,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-02-21 16:27:31,149 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2021-02-21 16:27:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:27:31,150 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-02-21 16:27:31,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:27:31,150 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-02-21 16:27:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-02-21 16:27:31,151 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:27:31,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:27:31,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:27:31,151 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:27:31,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:27:31,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1241381707, now seen corresponding path program 1 times [2021-02-21 16:27:31,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:27:31,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948689721] [2021-02-21 16:27:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:27:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:27:31,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:31,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:27:31,240 WARN L141 QuantifierPusher]: treesize reduction 11, result has 31.3 percent of original size [2021-02-21 16:27:31,241 WARN L147 QuantifierPusher]: treesize reduction 11, result has 31.3 percent of original size 5 [2021-02-21 16:27:31,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:31,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:27:31,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:31,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:27:31,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:27:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:27:31,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:31,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:27:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:27:31,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948689721] [2021-02-21 16:27:31,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:27:31,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:27:31,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895563857] [2021-02-21 16:27:31,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:27:31,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:27:31,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:27:31,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:27:31,302 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2021-02-21 16:27:31,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:27:31,413 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-02-21 16:27:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:27:31,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-02-21 16:27:31,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:27:31,415 INFO L225 Difference]: With dead ends: 19 [2021-02-21 16:27:31,415 INFO L226 Difference]: Without dead ends: 17 [2021-02-21 16:27:31,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-21 16:27:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-02-21 16:27:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-02-21 16:27:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-02-21 16:27:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-02-21 16:27:31,424 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-02-21 16:27:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:27:31,424 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-02-21 16:27:31,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:27:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-02-21 16:27:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-21 16:27:31,425 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:27:31,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:27:31,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:27:31,426 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:27:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:27:31,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1033184217, now seen corresponding path program 1 times [2021-02-21 16:27:31,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:27:31,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913422068] [2021-02-21 16:27:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:27:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:27:31,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:31,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:27:31,471 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-21 16:27:31,473 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-21 16:27:31,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:31,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:27:31,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:31,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:27:31,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:31,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:27:31,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:27:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:27:31,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:27:31,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:27:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:27:31,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913422068] [2021-02-21 16:27:31,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:27:31,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:27:31,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765720269] [2021-02-21 16:27:31,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:27:31,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:27:31,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:27:31,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:27:31,564 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2021-02-21 16:27:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:27:31,930 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-02-21 16:27:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 16:27:31,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-02-21 16:27:31,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:27:31,931 INFO L225 Difference]: With dead ends: 25 [2021-02-21 16:27:31,932 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:27:31,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-02-21 16:27:31,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:27:31,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:27:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:27:31,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:27:31,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-02-21 16:27:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:27:31,935 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:27:31,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:27:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:27:31,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:27:31,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:27:31,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:27:32,219 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-21 16:27:32,220 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-21 16:27:32,220 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-21 16:27:32,220 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:27:32,222 INFO L185 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|)) [2021-02-21 16:27:32,222 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:27:32,222 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:27:32,222 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:27:32,222 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:27:32,222 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:27:32,223 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:27:32,223 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-21 16:27:32,223 INFO L189 CegarLoopUtils]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:27:32,223 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:27:32,223 INFO L189 CegarLoopUtils]: For program point L33(lines 33 89) no Hoare annotation was computed. [2021-02-21 16:27:32,223 INFO L189 CegarLoopUtils]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-02-21 16:27:32,224 INFO L189 CegarLoopUtils]: For program point L64(line 64) no Hoare annotation was computed. [2021-02-21 16:27:32,224 INFO L185 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))) [2021-02-21 16:27:32,224 INFO L189 CegarLoopUtils]: For program point L62(lines 62 70) no Hoare annotation was computed. [2021-02-21 16:27:32,224 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 13 102) no Hoare annotation was computed. [2021-02-21 16:27:32,224 INFO L189 CegarLoopUtils]: For program point L48(line 48) no Hoare annotation was computed. [2021-02-21 16:27:32,224 INFO L185 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))) [2021-02-21 16:27:32,225 INFO L189 CegarLoopUtils]: For program point L46(lines 46 87) no Hoare annotation was computed. [2021-02-21 16:27:32,225 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 13 102) no Hoare annotation was computed. [2021-02-21 16:27:32,225 INFO L185 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))) [2021-02-21 16:27:32,225 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-02-21 16:27:32,225 INFO L189 CegarLoopUtils]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2021-02-21 16:27:32,225 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 13 102) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2021-02-21 16:27:32,226 INFO L189 CegarLoopUtils]: For program point L26(lines 26 96) no Hoare annotation was computed. [2021-02-21 16:27:32,226 INFO L189 CegarLoopUtils]: For program point L76(lines 76 85) no Hoare annotation was computed. [2021-02-21 16:27:32,226 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-02-21 16:27:32,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:27:32 BoogieIcfgContainer [2021-02-21 16:27:32,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:27:32,255 INFO L168 Benchmark]: Toolchain (without parser) took 3118.90 ms. Allocated memory was 164.6 MB in the beginning and 206.6 MB in the end (delta: 41.9 MB). Free memory was 139.3 MB in the beginning and 85.6 MB in the end (delta: 53.7 MB). Peak memory consumption was 96.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:27:32,257 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:27:32,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.82 ms. Allocated memory is still 164.6 MB. Free memory was 138.2 MB in the beginning and 128.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:27:32,265 INFO L168 Benchmark]: Boogie Preprocessor took 37.22 ms. Allocated memory is still 164.6 MB. Free memory was 128.1 MB in the beginning and 126.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:27:32,266 INFO L168 Benchmark]: RCFGBuilder took 549.41 ms. Allocated memory is still 164.6 MB. Free memory was 126.5 MB in the beginning and 111.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:27:32,267 INFO L168 Benchmark]: TraceAbstraction took 2178.81 ms. Allocated memory was 164.6 MB in the beginning and 206.6 MB in the end (delta: 41.9 MB). Free memory was 111.2 MB in the beginning and 85.6 MB in the end (delta: 25.5 MB). Peak memory consumption was 68.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:27:32,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.82 ms. Allocated memory is still 164.6 MB. Free memory was 138.2 MB in the beginning and 128.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.22 ms. Allocated memory is still 164.6 MB. Free memory was 128.1 MB in the beginning and 126.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 549.41 ms. Allocated memory is still 164.6 MB. Free memory was 126.5 MB in the beginning and 111.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2178.81 ms. Allocated memory was 164.6 MB in the beginning and 206.6 MB in the end (delta: 41.9 MB). Free memory was 111.2 MB in the beginning and 85.6 MB in the end (delta: 25.5 MB). Peak memory consumption was 68.1 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 - 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) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 91 SDslu, 43 SDs, 0 SdLazy, 83 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 107 HoareAnnotationTreeSize, 7 FomulaSimplifications, 547 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 185 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 2242 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...