/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/test15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:04:47,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:04:47,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:04:47,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 01:04:47,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 01:04:47,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 01:04:47,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 01:04:47,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 01:04:47,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 01:04:47,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 01:04:47,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 01:04:47,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 01:04:47,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:04:47,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:04:47,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:04:47,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:04:47,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:04:47,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:04:47,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:04:47,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:04:47,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:04:47,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:04:47,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:04:47,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:04:47,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 01:04:47,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 01:04:47,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 01:04:47,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 01:04:47,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 01:04:47,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 01:04:47,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 01:04:47,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 01:04:47,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 01:04:47,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 01:04:47,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 01:04:47,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 01:04:47,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 01:04:47,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 01:04:47,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:04:47,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:04:47,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:04:47,800 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 01:04:47,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:04:47,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:04:47,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:04:47,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:04:47,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:04:47,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:04:47,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:04:47,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:04:47,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:04:47,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:04:47,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:04:47,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:04:47,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:04:47,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:04:47,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:04:47,842 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:04:47,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:04:47,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:04:47,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:04:47,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:04:47,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:04:47,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:04:47,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:04:48,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:04:48,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:04:48,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:04:48,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:04:48,383 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:04:48,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test15.c [2020-10-24 01:04:48,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae491fa4/4327133e30684c8084a0cc3dbdf61f93/FLAG573e09571 [2020-10-24 01:04:49,167 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:04:49,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test15.c [2020-10-24 01:04:49,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae491fa4/4327133e30684c8084a0cc3dbdf61f93/FLAG573e09571 [2020-10-24 01:04:49,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae491fa4/4327133e30684c8084a0cc3dbdf61f93 [2020-10-24 01:04:49,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:04:49,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:04:49,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:04:49,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:04:49,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:04:49,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:04:49" (1/1) ... [2020-10-24 01:04:49,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2f5d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49, skipping insertion in model container [2020-10-24 01:04:49,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:04:49" (1/1) ... [2020-10-24 01:04:49,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:04:49,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:04:49,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:04:49,771 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:04:49,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:04:49,811 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:04:49,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49 WrapperNode [2020-10-24 01:04:49,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:04:49,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:04:49,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:04:49,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:04:49,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49" (1/1) ... [2020-10-24 01:04:49,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49" (1/1) ... [2020-10-24 01:04:49,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49" (1/1) ... [2020-10-24 01:04:49,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49" (1/1) ... [2020-10-24 01:04:49,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49" (1/1) ... [2020-10-24 01:04:49,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49" (1/1) ... [2020-10-24 01:04:49,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49" (1/1) ... [2020-10-24 01:04:49,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:04:49,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:04:49,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:04:49,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:04:49,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49" (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 01:04:49,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:04:49,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:04:49,996 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:04:49,996 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-10-24 01:04:49,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:04:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:04:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:04:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:04:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:04:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:04:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-10-24 01:04:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:04:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:04:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:04:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:04:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:04:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:04:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:04:50,523 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:04:50,523 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 01:04:50,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:04:50 BoogieIcfgContainer [2020-10-24 01:04:50,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:04:50,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:04:50,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:04:50,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:04:50,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:04:49" (1/3) ... [2020-10-24 01:04:50,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35803634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:04:50, skipping insertion in model container [2020-10-24 01:04:50,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:49" (2/3) ... [2020-10-24 01:04:50,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35803634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:04:50, skipping insertion in model container [2020-10-24 01:04:50,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:04:50" (3/3) ... [2020-10-24 01:04:50,536 INFO L111 eAbstractionObserver]: Analyzing ICFG test15.c [2020-10-24 01:04:50,550 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:04:50,557 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:04:50,576 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:04:50,609 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:04:50,609 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:04:50,609 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:04:50,609 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:04:50,610 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:04:50,610 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:04:50,610 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:04:50,610 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:04:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-24 01:04:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-24 01:04:50,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:04:50,643 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] [2020-10-24 01:04:50,644 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:04:50,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:04:50,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1720099643, now seen corresponding path program 1 times [2020-10-24 01:04:50,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:04:50,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194616770] [2020-10-24 01:04:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:04:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:04:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:51,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-24 01:04:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:51,531 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 01:04:51,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194616770] [2020-10-24 01:04:51,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:04:51,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-24 01:04:51,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452664806] [2020-10-24 01:04:51,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 01:04:51,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:04:51,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 01:04:51,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:04:51,565 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 13 states. [2020-10-24 01:04:52,251 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-24 01:04:52,439 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-24 01:04:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:04:52,714 INFO L93 Difference]: Finished difference Result 56 states and 55 transitions. [2020-10-24 01:04:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 01:04:52,716 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-24 01:04:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:04:52,727 INFO L225 Difference]: With dead ends: 56 [2020-10-24 01:04:52,727 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:04:52,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2020-10-24 01:04:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:04:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:04:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:04:52,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:04:52,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-10-24 01:04:52,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:04:52,772 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:04:52,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 01:04:52,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:04:52,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:04:52,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:04:52,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:04:53,531 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-24 01:04:53,531 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-24 01:04:53,531 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-24 01:04:53,532 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-24 01:04:53,532 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-24 01:04:53,537 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-24 01:04:53,538 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 01:04:53,538 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-24 01:04:53,538 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 01:04:53,538 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-24 01:04:53,539 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-24 01:04:53,539 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-24 01:04:53,541 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-24 01:04:53,541 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 01:04:53,542 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 01:04:53,542 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 01:04:53,542 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 01:04:53,542 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 01:04:53,542 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 11 23) the Hoare annotation is: true [2020-10-24 01:04:53,542 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: false [2020-10-24 01:04:53,543 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|) (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))) [2020-10-24 01:04:53,544 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|))) (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= .cse0 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|)) (= .cse0 |main_#t~mem9|))) [2020-10-24 01:04:53,545 INFO L270 CegarLoopResult]: At program point L15-1(lines 15 17) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|))) (and (= |main_#t~mem10| |main_#t~mem9|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= .cse0 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|)) (= .cse0 |main_#t~mem9|))) [2020-10-24 01:04:53,545 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= |#memory_int| |old(#memory_int)|) (= (select |#valid| |main_~#a~0.base|) 1)) [2020-10-24 01:04:53,548 INFO L270 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: false [2020-10-24 01:04:53,549 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 11 23) the Hoare annotation is: true [2020-10-24 01:04:53,549 INFO L270 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1)) [2020-10-24 01:04:53,549 INFO L270 CegarLoopResult]: At program point L15-3(line 15) the Hoare annotation is: false [2020-10-24 01:04:53,550 INFO L270 CegarLoopResult]: At program point L15-4(line 15) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|))) (and (= |main_#t~mem10| |main_#t~mem9|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= .cse0 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|)) (= .cse0 |main_#t~mem9|))) [2020-10-24 01:04:53,551 INFO L270 CegarLoopResult]: At program point L15-5(line 15) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|))) (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= .cse0 (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|)) (= .cse0 |main_#t~mem9|))) [2020-10-24 01:04:53,552 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 11 23) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-24 01:04:53,552 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: false [2020-10-24 01:04:53,552 INFO L270 CegarLoopResult]: At program point L16(lines 11 23) the Hoare annotation is: false [2020-10-24 01:04:53,552 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1)) [2020-10-24 01:04:53,553 INFO L270 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|) (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))) [2020-10-24 01:04:53,553 INFO L270 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= (select |#valid| |main_~#a~0.base|) 1)) [2020-10-24 01:04:53,555 INFO L270 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= |#memory_int| |old(#memory_int)|) (= (select |#valid| |main_~#a~0.base|) 1)) [2020-10-24 01:04:53,555 INFO L270 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|) (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))) [2020-10-24 01:04:53,556 INFO L270 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| |main_~#b~0.base|) |main_~#b~0.offset|) (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|))) [2020-10-24 01:04:53,556 INFO L277 CegarLoopResult]: At program point L12-4(line 12) the Hoare annotation is: true [2020-10-24 01:04:53,556 INFO L277 CegarLoopResult]: At program point L12-5(line 12) the Hoare annotation is: true [2020-10-24 01:04:53,556 INFO L270 CegarLoopResult]: At program point L12-6(line 12) the Hoare annotation is: false [2020-10-24 01:04:53,556 INFO L270 CegarLoopResult]: At program point L12-7(line 12) the Hoare annotation is: false [2020-10-24 01:04:53,557 INFO L270 CegarLoopResult]: At program point L12-8(line 12) the Hoare annotation is: false [2020-10-24 01:04:53,557 INFO L270 CegarLoopResult]: At program point L12-9(line 12) the Hoare annotation is: false [2020-10-24 01:04:53,557 INFO L270 CegarLoopResult]: At program point assignEXIT(lines 7 9) the Hoare annotation is: (and (= assign_~pa.base |assign_#in~pa.base|) (= assign_~pb.base |assign_#in~pb.base|) (or (= |assign_#in~pa.base| |assign_#in~pb.base|) (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|))) (= assign_~pa.offset |assign_#in~pa.offset|) (= assign_~pb.offset |assign_#in~pb.offset|)) [2020-10-24 01:04:53,557 INFO L270 CegarLoopResult]: At program point assignENTRY(lines 7 9) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-24 01:04:53,557 INFO L270 CegarLoopResult]: At program point assignFINAL(lines 7 9) the Hoare annotation is: (and (= assign_~pa.base |assign_#in~pa.base|) (= assign_~pb.base |assign_#in~pb.base|) (or (= |assign_#in~pa.base| |assign_#in~pb.base|) (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|))) (= assign_~pa.offset |assign_#in~pa.offset|) (= assign_~pb.offset |assign_#in~pb.offset|)) [2020-10-24 01:04:53,558 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (and (= assign_~pa.base |assign_#in~pa.base|) (= assign_~pb.base |assign_#in~pb.base|) (= |#memory_int| |old(#memory_int)|) (= assign_~pa.offset |assign_#in~pa.offset|) (= assign_~pb.offset |assign_#in~pb.offset|)) [2020-10-24 01:04:53,558 INFO L270 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (and (= assign_~pa.base |assign_#in~pa.base|) (= |#memory_int| |old(#memory_int)|) (= assign_~pa.offset |assign_#in~pa.offset|)) [2020-10-24 01:04:53,558 INFO L270 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: (and (or (= |assign_#in~pa.base| |assign_#in~pb.base|) (= |assign_#t~mem7| (select (select (store |#memory_int| assign_~pa.base (store (select |#memory_int| assign_~pa.base) assign_~pa.offset |assign_#t~mem7|)) |assign_#in~pb.base|) |assign_#in~pb.offset|))) (= assign_~pa.base |assign_#in~pa.base|) (= assign_~pb.base |assign_#in~pb.base|) (= |#memory_int| |old(#memory_int)|) (= assign_~pa.offset |assign_#in~pa.offset|) (= assign_~pb.offset |assign_#in~pb.offset|)) [2020-10-24 01:04:53,558 INFO L270 CegarLoopResult]: At program point L8-2(line 8) the Hoare annotation is: (let ((.cse0 (= |assign_#in~pa.base| |assign_#in~pb.base|))) (and (or .cse0 (= |assign_#t~mem7| (select (select (store |#memory_int| assign_~pa.base (store (select |#memory_int| assign_~pa.base) assign_~pa.offset |assign_#t~mem7|)) |assign_#in~pb.base|) |assign_#in~pb.offset|))) (= assign_~pa.base |assign_#in~pa.base|) (= assign_~pb.base |assign_#in~pb.base|) (or .cse0 (= (select (select |#memory_int| |assign_#in~pa.base|) |assign_#in~pa.offset|) (select (select |#memory_int| |assign_#in~pb.base|) |assign_#in~pb.offset|))) (= assign_~pa.offset |assign_#in~pa.offset|) (= assign_~pb.offset |assign_#in~pb.offset|))) [2020-10-24 01:04:53,580 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:04:53,582 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:04:53,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:04:53 BoogieIcfgContainer [2020-10-24 01:04:53,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 01:04:53,604 INFO L168 Benchmark]: Toolchain (without parser) took 4073.70 ms. Allocated memory was 151.0 MB in the beginning and 212.9 MB in the end (delta: 61.9 MB). Free memory was 128.6 MB in the beginning and 174.3 MB in the end (delta: -45.7 MB). Peak memory consumption was 106.9 MB. Max. memory is 8.0 GB. [2020-10-24 01:04:53,606 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 01:04:53,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.86 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 118.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 01:04:53,609 INFO L168 Benchmark]: Boogie Preprocessor took 55.78 ms. Allocated memory is still 151.0 MB. Free memory was 118.3 MB in the beginning and 116.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:04:53,610 INFO L168 Benchmark]: RCFGBuilder took 652.64 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 133.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. [2020-10-24 01:04:53,611 INFO L168 Benchmark]: TraceAbstraction took 3068.35 ms. Allocated memory was 151.0 MB in the beginning and 212.9 MB in the end (delta: 61.9 MB). Free memory was 132.5 MB in the beginning and 174.3 MB in the end (delta: -41.8 MB). Peak memory consumption was 110.3 MB. Max. memory is 8.0 GB. [2020-10-24 01:04:53,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.86 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 118.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.78 ms. Allocated memory is still 151.0 MB. Free memory was 118.3 MB in the beginning and 116.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 652.64 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 133.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3068.35 ms. Allocated memory was 151.0 MB in the beginning and 212.9 MB in the end (delta: 61.9 MB). Free memory was 132.5 MB in the beginning and 174.3 MB in the end (delta: -41.8 MB). Peak memory consumption was 110.3 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 * 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: 11]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 7]: Procedure Contract for assign [2020-10-24 01:04:53,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:04:53,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:04:53,627 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-24 01:04:53,627 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure assign: (((pa == pa && pb == pb) && (pa == pb || unknown-#memory_int-unknown[pa][pa] == unknown-#memory_int-unknown[pb][pb])) && pa == pa) && pb == pb - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 49 SDslu, 98 SDs, 0 SdLazy, 219 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 52 LocationsWithAnnotation, 52 PreInvPairs, 56 NumberOfFragments, 490 HoareAnnotationTreeSize, 52 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 52 FomulaSimplificationsInter, 256 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 5642 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...