/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/loop-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:40:25,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:40:25,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:40:25,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:40:25,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:40:25,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:40:25,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:40:25,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:40:25,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:40:25,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:40:25,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:40:25,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:40:25,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:40:25,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:40:25,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:40:25,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:40:25,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:40:25,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:40:25,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:40:25,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:40:25,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:40:25,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:40:25,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:40:25,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:40:25,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:40:25,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:40:25,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:40:25,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:40:25,181 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 06:40:25,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:40:25,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:40:25,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:40:25,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:40:25,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:40:25,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:40:25,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:40:25,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:40:25,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:40:25,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:40:25,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:40:25,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:40:25,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:40:25,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:40:25,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:40:25,203 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:40:25,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:40:25,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:40:25,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:40:25,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:40:25,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:40:25,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:40:25,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:40:25,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:40:25,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:40:25,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:40:25,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:40:25,739 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:40:25,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-11-07 06:40:25,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2948f12e4/e728bfeae1cc4f46a98878c1e827b6f3/FLAGf39123e34 [2020-11-07 06:40:26,632 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:40:26,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-11-07 06:40:26,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2948f12e4/e728bfeae1cc4f46a98878c1e827b6f3/FLAGf39123e34 [2020-11-07 06:40:26,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2948f12e4/e728bfeae1cc4f46a98878c1e827b6f3 [2020-11-07 06:40:26,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:40:27,003 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:40:27,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:40:27,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:40:27,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:40:27,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:26" (1/1) ... [2020-11-07 06:40:27,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379cc48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27, skipping insertion in model container [2020-11-07 06:40:27,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:26" (1/1) ... [2020-11-07 06:40:27,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:40:27,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:40:27,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:40:27,257 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:40:27,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:40:27,297 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:40:27,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27 WrapperNode [2020-11-07 06:40:27,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:40:27,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:40:27,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:40:27,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:40:27,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27" (1/1) ... [2020-11-07 06:40:27,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27" (1/1) ... [2020-11-07 06:40:27,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27" (1/1) ... [2020-11-07 06:40:27,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27" (1/1) ... [2020-11-07 06:40:27,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27" (1/1) ... [2020-11-07 06:40:27,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27" (1/1) ... [2020-11-07 06:40:27,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27" (1/1) ... [2020-11-07 06:40:27,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:40:27,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:40:27,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:40:27,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:40:27,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27" (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 06:40:27,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:40:27,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:40:27,446 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:40:27,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:40:27,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:40:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:40:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:40:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:40:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:40:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:40:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:40:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:40:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:40:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:40:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:40:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:40:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:40:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:40:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:40:28,043 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:40:28,043 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 06:40:28,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:28 BoogieIcfgContainer [2020-11-07 06:40:28,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:40:28,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:40:28,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:40:28,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:40:28,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:40:26" (1/3) ... [2020-11-07 06:40:28,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15172390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:28, skipping insertion in model container [2020-11-07 06:40:28,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:27" (2/3) ... [2020-11-07 06:40:28,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15172390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:28, skipping insertion in model container [2020-11-07 06:40:28,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:28" (3/3) ... [2020-11-07 06:40:28,060 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2020-11-07 06:40:28,084 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:40:28,089 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:40:28,106 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:40:28,138 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:40:28,138 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:40:28,139 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:40:28,139 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:40:28,139 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:40:28,139 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:40:28,139 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:40:28,140 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:40:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-11-07 06:40:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-07 06:40:28,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:28,178 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] [2020-11-07 06:40:28,179 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:28,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:28,188 INFO L82 PathProgramCache]: Analyzing trace with hash -753655292, now seen corresponding path program 1 times [2020-11-07 06:40:28,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:28,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252873895] [2020-11-07 06:40:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:28,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:28,574 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 06:40:28,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252873895] [2020-11-07 06:40:28,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:40:28,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 06:40:28,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102051422] [2020-11-07 06:40:28,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 06:40:28,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:28,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 06:40:28,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 06:40:28,621 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-11-07 06:40:28,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:28,870 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-11-07 06:40:28,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 06:40:28,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-07 06:40:28,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:28,882 INFO L225 Difference]: With dead ends: 63 [2020-11-07 06:40:28,882 INFO L226 Difference]: Without dead ends: 36 [2020-11-07 06:40:28,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 06:40:28,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-07 06:40:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-07 06:40:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-07 06:40:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-11-07 06:40:28,957 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2020-11-07 06:40:28,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:28,958 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-11-07 06:40:28,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 06:40:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-11-07 06:40:28,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-07 06:40:28,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:28,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:28,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:40:28,961 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:28,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:28,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1202109510, now seen corresponding path program 1 times [2020-11-07 06:40:28,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:28,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072164916] [2020-11-07 06:40:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:29,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:40:29,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072164916] [2020-11-07 06:40:29,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:29,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 06:40:29,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561121787] [2020-11-07 06:40:29,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:40:29,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:29,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:40:29,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:40:29,296 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 9 states. [2020-11-07 06:40:29,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:29,842 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-11-07 06:40:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 06:40:29,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-11-07 06:40:29,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:29,845 INFO L225 Difference]: With dead ends: 48 [2020-11-07 06:40:29,845 INFO L226 Difference]: Without dead ends: 40 [2020-11-07 06:40:29,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-07 06:40:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-07 06:40:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-11-07 06:40:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-07 06:40:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-11-07 06:40:29,863 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2020-11-07 06:40:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:29,864 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-11-07 06:40:29,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:40:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-11-07 06:40:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-07 06:40:29,866 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:29,866 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-11-07 06:40:29,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:40:29,867 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:29,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1593940600, now seen corresponding path program 2 times [2020-11-07 06:40:29,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:29,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302470134] [2020-11-07 06:40:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:30,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:40:30,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302470134] [2020-11-07 06:40:30,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:30,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 06:40:30,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274674219] [2020-11-07 06:40:30,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 06:40:30,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:30,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 06:40:30,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:40:30,178 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2020-11-07 06:40:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:30,826 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-11-07 06:40:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:40:30,826 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-11-07 06:40:30,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:30,828 INFO L225 Difference]: With dead ends: 52 [2020-11-07 06:40:30,829 INFO L226 Difference]: Without dead ends: 44 [2020-11-07 06:40:30,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-11-07 06:40:30,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-07 06:40:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-07 06:40:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-07 06:40:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-11-07 06:40:30,867 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2020-11-07 06:40:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:30,868 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-11-07 06:40:30,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 06:40:30,870 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-11-07 06:40:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-07 06:40:30,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:30,874 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:40:30,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:40:30,875 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:30,876 INFO L82 PathProgramCache]: Analyzing trace with hash -939811382, now seen corresponding path program 3 times [2020-11-07 06:40:30,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:30,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869901889] [2020-11-07 06:40:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:31,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-07 06:40:31,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869901889] [2020-11-07 06:40:31,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:40:31,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 06:40:31,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057719349] [2020-11-07 06:40:31,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:40:31,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:31,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:40:31,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:40:31,058 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 9 states. [2020-11-07 06:40:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:31,544 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-11-07 06:40:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 06:40:31,545 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-11-07 06:40:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:31,546 INFO L225 Difference]: With dead ends: 43 [2020-11-07 06:40:31,546 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:40:31,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-11-07 06:40:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:40:31,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:40:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:40:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:40:31,549 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-11-07 06:40:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:31,549 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:40:31,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:40:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:40:31,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:40:31,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:40:31,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:40:32,042 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2020-11-07 06:40:32,513 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2020-11-07 06:40:32,728 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 25 [2020-11-07 06:40:32,922 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 4) the Hoare annotation is: true [2020-11-07 06:40:32,923 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-07 06:40:32,923 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 4) the Hoare annotation is: true [2020-11-07 06:40:32,923 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: true [2020-11-07 06:40:32,923 INFO L269 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: true [2020-11-07 06:40:32,924 INFO L269 CegarLoopResult]: At program point L4-4(line 4) the Hoare annotation is: true [2020-11-07 06:40:32,924 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:32,924 INFO L269 CegarLoopResult]: At program point L4-5(line 4) the Hoare annotation is: true [2020-11-07 06:40:32,924 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:32,924 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:40:32,924 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 06:40:32,925 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)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~__return_65~0 |old(~__return_65~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 06:40:32,925 INFO L269 CegarLoopResult]: At program point L4(line 4) the Hoare annotation is: true [2020-11-07 06:40:32,925 INFO L269 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: true [2020-11-07 06:40:32,925 INFO L269 CegarLoopResult]: At program point L4-2(line 4) the Hoare annotation is: true [2020-11-07 06:40:32,925 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:40:32,925 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:40:32,926 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:32,926 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:40:32,926 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:40:32,926 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-11-07 06:40:32,926 INFO L266 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-07 06:40:32,926 INFO L266 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-11-07 06:40:32,927 INFO L266 CegarLoopResult]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2020-11-07 06:40:32,927 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-11-07 06:40:32,927 INFO L262 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:32,927 INFO L262 CegarLoopResult]: At program point L25(lines 25 58) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:32,927 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 13 60) the Hoare annotation is: true [2020-11-07 06:40:32,928 INFO L269 CegarLoopResult]: At program point L54(line 54) the Hoare annotation is: true [2020-11-07 06:40:32,928 INFO L262 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:32,928 INFO L262 CegarLoopResult]: At program point L19(lines 19 59) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:32,928 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-11-07 06:40:32,928 INFO L262 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false [2020-11-07 06:40:32,928 INFO L262 CegarLoopResult]: At program point L48-1(line 48) the Hoare annotation is: false [2020-11-07 06:40:32,929 INFO L262 CegarLoopResult]: At program point L46(lines 46 55) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0))) (.cse1 (not (= main_~__VERIFIER_assert__cond~0 0))) (.cse2 (= |old(~__return_65~0)| ~__return_65~0))) (or (and .cse0 .cse1 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0)) .cse2) (and (<= 2 main_~main__y~0) .cse0 .cse1 .cse2 (<= (+ main_~main__x~0 2) main_~main__y~0)))) [2020-11-07 06:40:32,929 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 13 60) the Hoare annotation is: true [2020-11-07 06:40:32,929 INFO L262 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0))) (.cse1 (= |old(~__return_65~0)| ~__return_65~0))) (or (and .cse0 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0)) .cse1) (and (<= 2 main_~main__y~0) .cse0 .cse1 (<= (+ main_~main__x~0 2) main_~main__y~0)))) [2020-11-07 06:40:32,929 INFO L262 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and (<= 2 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0)) .cse0))) [2020-11-07 06:40:32,929 INFO L262 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 1) main_~main__y~0)) [2020-11-07 06:40:32,930 INFO L262 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and .cse0 (<= (+ main_~main__x~0 50) 0)) (and (<= (+ main_~main__x~0 1) 0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)))) [2020-11-07 06:40:32,930 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 13 60) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-11-07 06:40:32,930 INFO L262 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-11-07 06:40:32,930 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:32,930 INFO L262 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:32,931 INFO L262 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-11-07 06:40:32,931 INFO L262 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:32,931 INFO L262 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0))) (.cse1 (= |old(~__return_65~0)| ~__return_65~0))) (or (and .cse0 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0)) .cse1) (and (<= 2 main_~main__y~0) .cse0 .cse1 (<= (+ main_~main__x~0 2) main_~main__y~0)))) [2020-11-07 06:40:32,931 INFO L262 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and (<= 2 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0)) .cse0))) [2020-11-07 06:40:32,931 INFO L262 CegarLoopResult]: At program point L37(lines 30 58) the Hoare annotation is: (let ((.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and .cse0 (<= (+ main_~main__x~0 50) 0)) (and .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)))) [2020-11-07 06:40:32,932 INFO L262 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 1) main_~main__y~0)) [2020-11-07 06:40:32,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:40:32 BoogieIcfgContainer [2020-11-07 06:40:32,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:40:32,958 INFO L168 Benchmark]: Toolchain (without parser) took 5960.18 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.9 MB in the beginning and 94.7 MB in the end (delta: 33.2 MB). Peak memory consumption was 99.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:32,959 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:40:32,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.80 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 117.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:32,961 INFO L168 Benchmark]: Boogie Preprocessor took 38.48 ms. Allocated memory is still 151.0 MB. Free memory was 117.9 MB in the beginning and 116.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:32,962 INFO L168 Benchmark]: RCFGBuilder took 705.93 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 132.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:32,964 INFO L168 Benchmark]: TraceAbstraction took 4906.56 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 132.0 MB in the beginning and 94.7 MB in the end (delta: 37.3 MB). Peak memory consumption was 103.9 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:32,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.80 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 117.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.48 ms. Allocated memory is still 151.0 MB. Free memory was 117.9 MB in the beginning and 116.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 705.93 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 132.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4906.56 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 132.0 MB in the beginning and 94.7 MB in the end (delta: 37.3 MB). Peak memory consumption was 103.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 30]: Loop Invariant Derived loop invariant: (\old(__return_65) == __return_65 && main__x + 50 <= 0) || (\old(__return_65) == __return_65 && main__x + 2 <= main__y) - ProcedureContractResult [Line: 4]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 118 SDtfs, 158 SDslu, 267 SDs, 0 SdLazy, 398 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 57 PreInvPairs, 89 NumberOfFragments, 364 HoareAnnotationTreeSize, 57 FomulaSimplifications, 1224 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 45 FomulaSimplificationsInter, 1171 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 16429 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 15/22 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...