/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/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:51:20,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:51:20,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:51:20,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:51:20,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:51:20,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:51:20,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:51:20,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:51:20,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:51:20,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:51:20,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:51:20,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:51:20,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:51:20,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:51:20,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:51:20,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:51:20,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:51:20,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:51:20,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:51:20,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:51:20,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:51:20,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:51:20,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:51:20,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:51:20,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 04:51:20,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 04:51:20,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 04:51:20,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 04:51:20,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 04:51:20,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 04:51:20,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 04:51:20,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 04:51:20,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 04:51:20,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 04:51:20,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 04:51:20,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 04:51:20,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 04:51:20,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 04:51:20,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:51:20,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:51:20,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:51:20,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 04:51:20,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:51:20,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:51:20,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:51:20,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:51:20,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:51:20,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:51:20,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:51:20,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:51:20,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:51:20,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:51:20,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:51:20,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:51:20,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:51:20,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:51:20,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:51:20,162 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:51:20,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:51:20,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:51:20,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:51:20,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:51:20,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:51:20,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:51:20,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:51:20,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:51:20,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:51:20,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:51:20,681 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:51:20,681 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:51:20,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-11-07 04:51:20,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ae916ce/c6742a37c1b1437a91e167049cc8eef8/FLAGa939c7327 [2020-11-07 04:51:21,498 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:51:21,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-11-07 04:51:21,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ae916ce/c6742a37c1b1437a91e167049cc8eef8/FLAGa939c7327 [2020-11-07 04:51:21,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ae916ce/c6742a37c1b1437a91e167049cc8eef8 [2020-11-07 04:51:21,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:51:21,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:51:21,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:51:21,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:51:21,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:51:21,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:51:21" (1/1) ... [2020-11-07 04:51:21,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe6ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:21, skipping insertion in model container [2020-11-07 04:51:21,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:51:21" (1/1) ... [2020-11-07 04:51:21,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:51:21,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:51:22,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:51:22,121 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:51:22,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:51:22,156 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:51:22,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:22 WrapperNode [2020-11-07 04:51:22,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:51:22,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:51:22,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:51:22,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:51:22,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:22" (1/1) ... [2020-11-07 04:51:22,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:22" (1/1) ... [2020-11-07 04:51:22,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:22" (1/1) ... [2020-11-07 04:51:22,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:22" (1/1) ... [2020-11-07 04:51:22,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:22" (1/1) ... [2020-11-07 04:51:22,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:22" (1/1) ... [2020-11-07 04:51:22,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:22" (1/1) ... [2020-11-07 04:51:22,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:51:22,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:51:22,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:51:22,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:51:22,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:22" (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 [2020-11-07 04:51:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:51:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:51:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:51:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-11-07 04:51:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:51:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:51:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:51:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:51:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:51:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 04:51:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-11-07 04:51:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:51:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:51:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:51:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:51:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:51:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:51:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:51:22,835 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:51:22,836 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 04:51:22,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:51:22 BoogieIcfgContainer [2020-11-07 04:51:22,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:51:22,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:51:22,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:51:22,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:51:22,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:51:21" (1/3) ... [2020-11-07 04:51:22,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abf6dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:51:22, skipping insertion in model container [2020-11-07 04:51:22,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:22" (2/3) ... [2020-11-07 04:51:22,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abf6dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:51:22, skipping insertion in model container [2020-11-07 04:51:22,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:51:22" (3/3) ... [2020-11-07 04:51:22,853 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-11-07 04:51:22,870 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:51:22,874 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:51:22,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:51:22,926 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:51:22,927 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:51:22,927 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:51:22,927 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:51:22,927 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:51:22,927 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:51:22,927 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:51:22,928 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:51:22,963 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-11-07 04:51:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-07 04:51:22,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:51:22,976 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] [2020-11-07 04:51:22,976 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:51:22,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:51:22,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1519440261, now seen corresponding path program 1 times [2020-11-07 04:51:22,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:51:22,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545402665] [2020-11-07 04:51:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:51:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:23,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:51:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:23,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:51:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:51:23,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545402665] [2020-11-07 04:51:23,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:51:23,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 04:51:23,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615301974] [2020-11-07 04:51:23,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 04:51:23,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:51:23,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 04:51:23,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 04:51:23,392 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2020-11-07 04:51:23,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:51:23,829 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-11-07 04:51:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 04:51:23,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-07 04:51:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:51:23,843 INFO L225 Difference]: With dead ends: 58 [2020-11-07 04:51:23,843 INFO L226 Difference]: Without dead ends: 35 [2020-11-07 04:51:23,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 04:51:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-07 04:51:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-07 04:51:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-07 04:51:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-11-07 04:51:23,909 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 28 [2020-11-07 04:51:23,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:51:23,910 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-11-07 04:51:23,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 04:51:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-11-07 04:51:23,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 04:51:23,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:51:23,916 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-11-07 04:51:23,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:51:23,918 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:51:23,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:51:23,921 INFO L82 PathProgramCache]: Analyzing trace with hash -799218257, now seen corresponding path program 1 times [2020-11-07 04:51:23,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:51:23,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987977871] [2020-11-07 04:51:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:51:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:51:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:51:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:24,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 04:51:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 04:51:24,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987977871] [2020-11-07 04:51:24,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:51:24,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 04:51:24,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427948993] [2020-11-07 04:51:24,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 04:51:24,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:51:24,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 04:51:24,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 04:51:24,171 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2020-11-07 04:51:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:51:24,601 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-11-07 04:51:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 04:51:24,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-11-07 04:51:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:51:24,604 INFO L225 Difference]: With dead ends: 47 [2020-11-07 04:51:24,604 INFO L226 Difference]: Without dead ends: 40 [2020-11-07 04:51:24,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-11-07 04:51:24,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-07 04:51:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-07 04:51:24,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-07 04:51:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-11-07 04:51:24,624 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2020-11-07 04:51:24,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:51:24,624 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-11-07 04:51:24,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 04:51:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-11-07 04:51:24,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-07 04:51:24,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:51:24,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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] [2020-11-07 04:51:24,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:51:24,630 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:51:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:51:24,632 INFO L82 PathProgramCache]: Analyzing trace with hash 717569989, now seen corresponding path program 2 times [2020-11-07 04:51:24,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:51:24,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390037703] [2020-11-07 04:51:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:51:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:24,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:51:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:24,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:51:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:24,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 04:51:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:24,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 04:51:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-07 04:51:24,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390037703] [2020-11-07 04:51:24,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:51:24,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 04:51:24,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305124779] [2020-11-07 04:51:24,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 04:51:24,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:51:24,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 04:51:24,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-07 04:51:24,898 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2020-11-07 04:51:25,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:51:25,536 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-07 04:51:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 04:51:25,536 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-11-07 04:51:25,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:51:25,537 INFO L225 Difference]: With dead ends: 40 [2020-11-07 04:51:25,537 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 04:51:25,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-11-07 04:51:25,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 04:51:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 04:51:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 04:51:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 04:51:25,539 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-11-07 04:51:25,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:51:25,540 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 04:51:25,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 04:51:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 04:51:25,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 04:51:25,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 04:51:25,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 04:51:26,257 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 04:51:26,257 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 04:51:26,257 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 04:51:26,257 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 04:51:26,257 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 04:51:26,258 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 04:51:26,258 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 04:51:26,258 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 04:51:26,258 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 04:51:26,258 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 04:51:26,258 INFO L262 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|)) [2020-11-07 04:51:26,259 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 04:51:26,259 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 04:51:26,259 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 04:51:26,259 INFO L262 CegarLoopResult]: At program point hanoiEXIT(lines 20 25) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2020-11-07 04:51:26,259 INFO L269 CegarLoopResult]: At program point hanoiENTRY(lines 20 25) the Hoare annotation is: true [2020-11-07 04:51:26,259 INFO L262 CegarLoopResult]: At program point hanoiFINAL(lines 20 25) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2020-11-07 04:51:26,260 INFO L269 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-11-07 04:51:26,260 INFO L262 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret7|) (= |hanoi_#t~ret7| 1)) [2020-11-07 04:51:26,260 INFO L269 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-11-07 04:51:26,260 INFO L262 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret7|) (= |hanoi_#t~ret7| 1)) [2020-11-07 04:51:26,260 INFO L269 CegarLoopResult]: At program point L21(lines 21 23) the Hoare annotation is: true [2020-11-07 04:51:26,261 INFO L262 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: (or (and (= |hanoi_#t~ret7| 1) (<= 3 |hanoi_#res|)) (and (<= 3 |hanoi_#t~ret7|) (<= 7 |hanoi_#res|))) [2020-11-07 04:51:26,261 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 04:51:26,261 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 04:51:26,261 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 04:51:26,261 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 04:51:26,261 INFO L269 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-11-07 04:51:26,261 INFO L262 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (or (<= 3 |main_#t~ret9|) (= |main_#t~ret9| 1)) [2020-11-07 04:51:26,262 INFO L269 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-11-07 04:51:26,262 INFO L262 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: (or (<= 3 |main_#t~ret9|) (= |main_#t~ret9| 1)) [2020-11-07 04:51:26,262 INFO L269 CegarLoopResult]: At program point L30(lines 30 32) the Hoare annotation is: true [2020-11-07 04:51:26,262 INFO L262 CegarLoopResult]: At program point L33-3(line 33) the Hoare annotation is: (or (and (<= 3 main_~result~0) (<= 3 |main_#t~ret9|)) (and (= main_~result~0 1) (= |main_#t~ret9| 1))) [2020-11-07 04:51:26,262 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 28 39) the Hoare annotation is: true [2020-11-07 04:51:26,263 INFO L269 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-11-07 04:51:26,263 INFO L269 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: true [2020-11-07 04:51:26,263 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 28 39) the Hoare annotation is: true [2020-11-07 04:51:26,263 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 28 39) the Hoare annotation is: true [2020-11-07 04:51:26,263 INFO L262 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: false [2020-11-07 04:51:26,263 INFO L262 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: false [2020-11-07 04:51:26,264 INFO L269 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-11-07 04:51:26,264 INFO L262 CegarLoopResult]: At program point L34(lines 34 38) the Hoare annotation is: (or (= main_~result~0 1) (<= 3 main_~result~0)) [2020-11-07 04:51:26,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:51:26 BoogieIcfgContainer [2020-11-07 04:51:26,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:51:26,284 INFO L168 Benchmark]: Toolchain (without parser) took 4412.13 ms. Allocated memory was 160.4 MB in the beginning and 194.0 MB in the end (delta: 33.6 MB). Free memory was 137.6 MB in the beginning and 132.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 106.4 MB. Max. memory is 8.0 GB. [2020-11-07 04:51:26,285 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 160.4 MB. Free memory is still 133.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:51:26,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.61 ms. Allocated memory is still 160.4 MB. Free memory was 137.0 MB in the beginning and 127.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-07 04:51:26,287 INFO L168 Benchmark]: Boogie Preprocessor took 33.99 ms. Allocated memory is still 160.4 MB. Free memory was 127.9 MB in the beginning and 126.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:51:26,288 INFO L168 Benchmark]: RCFGBuilder took 648.81 ms. Allocated memory is still 160.4 MB. Free memory was 126.5 MB in the beginning and 112.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-07 04:51:26,289 INFO L168 Benchmark]: TraceAbstraction took 3436.61 ms. Allocated memory was 160.4 MB in the beginning and 194.0 MB in the end (delta: 33.6 MB). Free memory was 112.5 MB in the beginning and 132.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. [2020-11-07 04:51:26,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 160.4 MB. Free memory is still 133.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.61 ms. Allocated memory is still 160.4 MB. Free memory was 137.0 MB in the beginning and 127.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.99 ms. Allocated memory is still 160.4 MB. Free memory was 127.9 MB in the beginning and 126.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 648.81 ms. Allocated memory is still 160.4 MB. Free memory was 126.5 MB in the beginning and 112.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3436.61 ms. Allocated memory was 160.4 MB in the beginning and 194.0 MB in the end (delta: 33.6 MB). Free memory was 112.5 MB in the beginning and 132.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. * 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 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 20]: Procedure Contract for hanoi Derived contract for procedure hanoi: \result == 1 || 3 <= \result - ProcedureContractResult [Line: 28]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 81 SDslu, 237 SDs, 0 SdLazy, 364 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 42 LocationsWithAnnotation, 59 PreInvPairs, 88 NumberOfFragments, 142 HoareAnnotationTreeSize, 59 FomulaSimplifications, 105 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 42 FomulaSimplificationsInter, 1151 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 9423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 12/20 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...