/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:05:04,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:05:04,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:05:04,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 01:05:04,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 01:05:04,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 01:05:04,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 01:05:04,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 01:05:04,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 01:05:04,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 01:05:04,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 01:05:04,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 01:05:04,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:05:04,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:05:04,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:05:04,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:05:04,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:05:04,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:05:04,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:05:04,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:05:04,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:05:04,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:05:04,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:05:04,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:05:04,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 01:05:04,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 01:05:04,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 01:05:04,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 01:05:04,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 01:05:04,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 01:05:04,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 01:05:04,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 01:05:04,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 01:05:04,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 01:05:04,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 01:05:04,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 01:05:04,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 01:05:04,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 01:05:04,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:05:04,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:05:04,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:05:04,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:05:04,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:05:04,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:05:04,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:05:04,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:05:04,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:05:04,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:05:04,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:05:04,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:05:04,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:05:04,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:05:04,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:05:04,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:05:04,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:05:04,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:05:04,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:05:04,482 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:05:04,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:05:04,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:05:04,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:05:04,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:05:04,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:05:04,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:05:04,483 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:05:04,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:05:04,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:05:04,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:05:04,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:05:04,974 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:05:04,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-10-24 01:05:05,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3211c0b7/e5b0110084834bbd8e040ea821e7dca9/FLAG845d442e5 [2020-10-24 01:05:05,746 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:05:05,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-10-24 01:05:05,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3211c0b7/e5b0110084834bbd8e040ea821e7dca9/FLAG845d442e5 [2020-10-24 01:05:06,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3211c0b7/e5b0110084834bbd8e040ea821e7dca9 [2020-10-24 01:05:06,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:05:06,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:05:06,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:05:06,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:05:06,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:05:06,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:05:06" (1/1) ... [2020-10-24 01:05:06,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0eefda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06, skipping insertion in model container [2020-10-24 01:05:06,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:05:06" (1/1) ... [2020-10-24 01:05:06,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:05:06,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:05:06,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:05:06,443 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:05:06,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:05:06,484 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:05:06,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06 WrapperNode [2020-10-24 01:05:06,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:05:06,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:05:06,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:05:06,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:05:06,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06" (1/1) ... [2020-10-24 01:05:06,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06" (1/1) ... [2020-10-24 01:05:06,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06" (1/1) ... [2020-10-24 01:05:06,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06" (1/1) ... [2020-10-24 01:05:06,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06" (1/1) ... [2020-10-24 01:05:06,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06" (1/1) ... [2020-10-24 01:05:06,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06" (1/1) ... [2020-10-24 01:05:06,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:05:06,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:05:06,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:05:06,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:05:06,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:05:06,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:05:06,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:05:06,641 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:05:06,641 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-24 01:05:06,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:05:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:05:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:05:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:05:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:05:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:05:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-24 01:05:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:05:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:05:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:05:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:05:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:05:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:05:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:05:07,146 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:05:07,146 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 01:05:07,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:05:07 BoogieIcfgContainer [2020-10-24 01:05:07,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:05:07,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:05:07,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:05:07,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:05:07,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:05:06" (1/3) ... [2020-10-24 01:05:07,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed4d4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:05:07, skipping insertion in model container [2020-10-24 01:05:07,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:06" (2/3) ... [2020-10-24 01:05:07,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed4d4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:05:07, skipping insertion in model container [2020-10-24 01:05:07,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:05:07" (3/3) ... [2020-10-24 01:05:07,171 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-10-24 01:05:07,185 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:05:07,192 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:05:07,210 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:05:07,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:05:07,256 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:05:07,257 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:05:07,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:05:07,257 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:05:07,257 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:05:07,257 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:05:07,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:05:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-24 01:05:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-24 01:05:07,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:05:07,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:05:07,302 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:05:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:05:07,314 INFO L82 PathProgramCache]: Analyzing trace with hash -838228713, now seen corresponding path program 1 times [2020-10-24 01:05:07,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:05:07,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164894677] [2020-10-24 01:05:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:05:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:07,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:05:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:07,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 01:05:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:05:07,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164894677] [2020-10-24 01:05:07,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:05:07,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 01:05:07,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699304270] [2020-10-24 01:05:07,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 01:05:07,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:07,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 01:05:07,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 01:05:07,853 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2020-10-24 01:05:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:05:08,080 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2020-10-24 01:05:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 01:05:08,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-10-24 01:05:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:05:08,092 INFO L225 Difference]: With dead ends: 83 [2020-10-24 01:05:08,093 INFO L226 Difference]: Without dead ends: 47 [2020-10-24 01:05:08,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 01:05:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-24 01:05:08,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-24 01:05:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-24 01:05:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-10-24 01:05:08,176 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-10-24 01:05:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:05:08,177 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-10-24 01:05:08,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 01:05:08,178 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-10-24 01:05:08,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-24 01:05:08,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:05:08,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:05:08,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:05:08,185 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:05:08,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:05:08,186 INFO L82 PathProgramCache]: Analyzing trace with hash -696041982, now seen corresponding path program 1 times [2020-10-24 01:05:08,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:05:08,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623401960] [2020-10-24 01:05:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:05:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:05:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:08,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 01:05:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:05:08,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623401960] [2020-10-24 01:05:08,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:05:08,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 01:05:08,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093571590] [2020-10-24 01:05:08,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:05:08,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:08,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:05:08,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:05:08,442 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 8 states. [2020-10-24 01:05:08,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:05:08,740 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-10-24 01:05:08,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 01:05:08,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-24 01:05:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:05:08,742 INFO L225 Difference]: With dead ends: 67 [2020-10-24 01:05:08,743 INFO L226 Difference]: Without dead ends: 52 [2020-10-24 01:05:08,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-24 01:05:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-24 01:05:08,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-10-24 01:05:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-24 01:05:08,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-10-24 01:05:08,758 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2020-10-24 01:05:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:05:08,758 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-10-24 01:05:08,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:05:08,759 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-10-24 01:05:08,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-24 01:05:08,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:05:08,760 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:05:08,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:05:08,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:05:08,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:05:08,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1919562198, now seen corresponding path program 1 times [2020-10-24 01:05:08,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:05:08,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882467041] [2020-10-24 01:05:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:05:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:05:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:09,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-24 01:05:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:05:09,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882467041] [2020-10-24 01:05:09,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:05:09,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-24 01:05:09,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140256629] [2020-10-24 01:05:09,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 01:05:09,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:09,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 01:05:09,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-24 01:05:09,480 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 15 states. [2020-10-24 01:05:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:05:10,430 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-10-24 01:05:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 01:05:10,431 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-24 01:05:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:05:10,432 INFO L225 Difference]: With dead ends: 49 [2020-10-24 01:05:10,432 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:05:10,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2020-10-24 01:05:10,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:05:10,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:05:10,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:05:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:05:10,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-10-24 01:05:10,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:05:10,435 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:05:10,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 01:05:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:05:10,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:05:10,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:05:10,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:05:11,317 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-24 01:05:11,317 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-24 01:05:11,317 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-24 01:05:11,318 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-24 01:05:11,318 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-24 01:05:11,318 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-24 01:05:11,318 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 01:05:11,318 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-24 01:05:11,318 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 01:05:11,319 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-24 01:05:11,319 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-24 01:05:11,319 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-24 01:05:11,319 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-24 01:05:11,319 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 01:05:11,320 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 01:05:11,320 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 01:05:11,320 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 01:05:11,320 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 01:05:11,320 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= (* 8 main_~i~0) (* 8 .cse1)) (<= 1 |main_#t~ret12|) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1))) [2020-10-24 01:05:11,321 INFO L270 CegarLoopResult]: At program point L31-1(lines 31 33) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= (* 8 main_~i~0) (* 8 .cse1)) (<= 1 |main_#t~ret12|) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1))) [2020-10-24 01:05:11,321 INFO L270 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: false [2020-10-24 01:05:11,321 INFO L277 CegarLoopResult]: At program point L31-3(line 31) the Hoare annotation is: true [2020-10-24 01:05:11,321 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (* main_~i~0 8))) (and (= (+ .cse0 main_~ad2~0.offset) main_~pa~0.offset) (= |main_~#ad1~0.offset| 0) (= main_~pa~0.base main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ .cse0 |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base))) [2020-10-24 01:05:11,322 INFO L270 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse0 (* main_~i~0 8))) (and (= (+ .cse0 main_~ad2~0.offset) main_~pa~0.offset) (= |main_#t~mem9| (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= |main_~#ad1~0.offset| 0) (= main_~pa~0.base main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ .cse0 |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base))) [2020-10-24 01:05:11,322 INFO L270 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_#t~mem9| .cse0) (= |main_~#ad1~0.offset| 0) (<= (+ main_~i~0 10) .cse0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-10-24 01:05:11,322 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 16 40) the Hoare annotation is: true [2020-10-24 01:05:11,322 INFO L270 CegarLoopResult]: At program point L23(lines 23 34) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-10-24 01:05:11,322 INFO L277 CegarLoopResult]: At program point L23-2(lines 23 34) the Hoare annotation is: true [2020-10-24 01:05:11,323 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-10-24 01:05:11,323 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-10-24 01:05:11,323 INFO L270 CegarLoopResult]: At program point L32(lines 17 40) the Hoare annotation is: false [2020-10-24 01:05:11,323 INFO L270 CegarLoopResult]: At program point L28-1(lines 28 30) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_#t~mem10| (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= |main_#t~mem10| .cse0))) [2020-10-24 01:05:11,323 INFO L270 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_#t~mem10| (select .cse0 (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= (* 8 main_~i~0) (* 8 .cse1)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= |main_#t~mem10| .cse1))) [2020-10-24 01:05:11,324 INFO L270 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-10-24 01:05:11,324 INFO L270 CegarLoopResult]: At program point L28-4(line 28) the Hoare annotation is: (and (= |main_#t~mem10| (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| 0) (<= (+ main_~i~0 1) |main_#t~mem10|) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= |main_#t~mem10| (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2020-10-24 01:05:11,324 INFO L270 CegarLoopResult]: At program point L28-5(lines 28 30) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-10-24 01:05:11,325 INFO L270 CegarLoopResult]: At program point L28-6(lines 28 30) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= (* 8 main_~i~0) (* 8 .cse1)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1))) [2020-10-24 01:05:11,325 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (+ main_~i~0 1) .cse0) (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-10-24 01:05:11,325 INFO L270 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (+ main_~i~0 1) .cse0) (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-10-24 01:05:11,325 INFO L270 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-10-24 01:05:11,326 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base)) [2020-10-24 01:05:11,326 INFO L270 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base)) [2020-10-24 01:05:11,326 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-10-24 01:05:11,326 INFO L270 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-10-24 01:05:11,326 INFO L270 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-10-24 01:05:11,327 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 16 40) the Hoare annotation is: true [2020-10-24 01:05:11,327 INFO L270 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: false [2020-10-24 01:05:11,327 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 16 40) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-24 01:05:11,327 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-10-24 01:05:11,327 INFO L277 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: true [2020-10-24 01:05:11,327 INFO L277 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: true [2020-10-24 01:05:11,328 INFO L270 CegarLoopResult]: At program point L18-3(line 18) the Hoare annotation is: false [2020-10-24 01:05:11,328 INFO L270 CegarLoopResult]: At program point L18-4(line 18) the Hoare annotation is: false [2020-10-24 01:05:11,328 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: false [2020-10-24 01:05:11,328 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 11 14) the Hoare annotation is: true [2020-10-24 01:05:11,328 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (= |check_#in~b| check_~b)) [2020-10-24 01:05:11,329 INFO L270 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (= |check_#t~mem7| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* check_~b 8)))) (= |check_#in~b| check_~b)) [2020-10-24 01:05:11,329 INFO L270 CegarLoopResult]: At program point L11(lines 11 14) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|)) [2020-10-24 01:05:11,329 INFO L270 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |check_#in~ad1.base|))) (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select .cse0 (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#t~mem7| (select .cse0 (+ |check_#in~ad1.offset| (* check_~b 8)))) (= |check_#in~b| check_~b))) [2020-10-24 01:05:11,329 INFO L270 CegarLoopResult]: At program point checkFINAL(lines 11 14) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#in~b| check_~b)) [2020-10-24 01:05:11,329 INFO L270 CegarLoopResult]: At program point checkEXIT(lines 11 14) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#in~b| check_~b)) [2020-10-24 01:05:11,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,352 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,352 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,355 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:05:11 BoogieIcfgContainer [2020-10-24 01:05:11,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 01:05:11,361 INFO L168 Benchmark]: Toolchain (without parser) took 5238.77 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.6 MB in the beginning and 97.0 MB in the end (delta: 30.5 MB). Peak memory consumption was 99.2 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:11,362 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 101.5 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 01:05:11,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.48 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:11,364 INFO L168 Benchmark]: Boogie Preprocessor took 58.19 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:11,365 INFO L168 Benchmark]: RCFGBuilder took 609.07 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 132.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:11,366 INFO L168 Benchmark]: TraceAbstraction took 4197.11 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 131.8 MB in the beginning and 97.0 MB in the end (delta: 34.8 MB). Peak memory consumption was 102.9 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:11,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 101.5 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 353.48 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.19 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 609.07 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 132.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4197.11 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 131.8 MB in the beginning and 97.0 MB in the end (delta: 34.8 MB). Peak memory consumption was 102.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant [2020-10-24 01:05:11,380 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,380 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,380 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,381 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,381 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,382 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,382 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,382 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((ad1 == 0 && 8 * i <= 8 * unknown-#memory_int-unknown[pa][pa]) && ad1 == ad2) && ad1 == ad2) && unknown-#memory_int-unknown[ad1][unknown-#memory_int-unknown[pa][pa] * 8 + ad1] == unknown-#memory_int-unknown[pa][pa] - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 11]: Procedure Contract for check [2020-10-24 01:05:11,383 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:05:11,384 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure check: ((ad1 == ad1 && ad1 == ad1) && (!(\old(b) == unknown-#memory_int-unknown[ad1][ad1 + \old(b) * 8]) || 1 <= \result)) && \old(b) == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 88 SDslu, 267 SDs, 0 SdLazy, 370 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 61 LocationsWithAnnotation, 83 PreInvPairs, 97 NumberOfFragments, 801 HoareAnnotationTreeSize, 83 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 61 FomulaSimplificationsInter, 385 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 33608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...