/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/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:40:07,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:40:07,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:40:07,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:40:07,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:40:07,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:40:07,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:40:07,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:40:07,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:40:07,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:40:07,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:40:07,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:40:07,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:40:07,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:40:07,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:40:07,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:40:07,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:40:07,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:40:07,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:40:07,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:40:07,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:40:07,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:40:07,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:40:07,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:40:07,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:40:07,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:40:07,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:40:07,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:40:07,205 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 06:40:07,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:40:07,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:40:07,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:40:07,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:40:07,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:40:07,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:40:07,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:40:07,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:40:07,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:40:07,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:40:07,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:40:07,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:40:07,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:40:07,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:40:07,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:40:07,239 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:40:07,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:40:07,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:40:07,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:40:07,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:40:07,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:40:07,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:40:07,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:40:07,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:40:07,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:40:07,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:40:07,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:40:07,696 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:40:07,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-11-07 06:40:07,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efaeca3bc/92dac644df354ab59b05502de740c96c/FLAG2ce82d065 [2020-11-07 06:40:08,409 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:40:08,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-11-07 06:40:08,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efaeca3bc/92dac644df354ab59b05502de740c96c/FLAG2ce82d065 [2020-11-07 06:40:08,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efaeca3bc/92dac644df354ab59b05502de740c96c [2020-11-07 06:40:08,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:40:08,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:40:08,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:40:08,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:40:08,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:40:08,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:08" (1/1) ... [2020-11-07 06:40:08,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2b09ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08, skipping insertion in model container [2020-11-07 06:40:08,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:08" (1/1) ... [2020-11-07 06:40:08,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:40:08,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:40:09,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:40:09,018 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:40:09,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:40:09,076 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:40:09,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:09 WrapperNode [2020-11-07 06:40:09,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:40:09,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:40:09,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:40:09,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:40:09,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:09" (1/1) ... [2020-11-07 06:40:09,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:09" (1/1) ... [2020-11-07 06:40:09,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:09" (1/1) ... [2020-11-07 06:40:09,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:09" (1/1) ... [2020-11-07 06:40:09,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:09" (1/1) ... [2020-11-07 06:40:09,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:09" (1/1) ... [2020-11-07 06:40:09,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:09" (1/1) ... [2020-11-07 06:40:09,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:40:09,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:40:09,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:40:09,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:40:09,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:09" (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 06:40:09,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:40:09,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:40:09,268 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:40:09,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:40:09,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:40:09,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:40:09,269 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:40:09,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:40:09,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 06:40:09,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 06:40:09,270 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:40:09,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:40:09,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:40:09,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:40:09,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:40:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:40:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:40:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:40:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:40:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:40:09,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:40:09,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:40:09,620 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:40:09,620 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:40:09,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:09 BoogieIcfgContainer [2020-11-07 06:40:09,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:40:09,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:40:09,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:40:09,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:40:09,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:40:08" (1/3) ... [2020-11-07 06:40:09,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ac7c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:09, skipping insertion in model container [2020-11-07 06:40:09,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:09" (2/3) ... [2020-11-07 06:40:09,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ac7c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:09, skipping insertion in model container [2020-11-07 06:40:09,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:09" (3/3) ... [2020-11-07 06:40:09,651 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2020-11-07 06:40:09,670 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:40:09,675 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:40:09,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:40:09,729 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:40:09,729 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:40:09,729 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:40:09,729 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:40:09,730 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:40:09,730 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:40:09,730 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:40:09,730 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:40:09,748 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-07 06:40:09,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-07 06:40:09,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:09,760 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] [2020-11-07 06:40:09,761 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:09,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:09,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1833346625, now seen corresponding path program 1 times [2020-11-07 06:40:09,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:09,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374527455] [2020-11-07 06:40:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:10,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:10,087 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 06:40:10,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374527455] [2020-11-07 06:40:10,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:40:10,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 06:40:10,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747116887] [2020-11-07 06:40:10,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 06:40:10,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:10,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 06:40:10,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 06:40:10,119 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-11-07 06:40:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:10,393 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-11-07 06:40:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 06:40:10,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-07 06:40:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:10,404 INFO L225 Difference]: With dead ends: 58 [2020-11-07 06:40:10,405 INFO L226 Difference]: Without dead ends: 32 [2020-11-07 06:40:10,408 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 06:40:10,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-07 06:40:10,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-07 06:40:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-07 06:40:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-11-07 06:40:10,474 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 27 [2020-11-07 06:40:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:10,475 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-11-07 06:40:10,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 06:40:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-11-07 06:40:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-07 06:40:10,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:10,477 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] [2020-11-07 06:40:10,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:40:10,478 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:10,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1028452737, now seen corresponding path program 1 times [2020-11-07 06:40:10,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:10,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972519387] [2020-11-07 06:40:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:10,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:11,009 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 06:40:11,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972519387] [2020-11-07 06:40:11,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:11,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 06:40:11,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702783196] [2020-11-07 06:40:11,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:40:11,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:11,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:40:11,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:40:11,024 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 12 states. [2020-11-07 06:40:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:11,594 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-11-07 06:40:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 06:40:11,597 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-11-07 06:40:11,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:11,602 INFO L225 Difference]: With dead ends: 44 [2020-11-07 06:40:11,602 INFO L226 Difference]: Without dead ends: 37 [2020-11-07 06:40:11,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-11-07 06:40:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-07 06:40:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-07 06:40:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-07 06:40:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-07 06:40:11,624 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 31 [2020-11-07 06:40:11,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:11,624 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-07 06:40:11,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:40:11,624 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-07 06:40:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-07 06:40:11,626 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:11,627 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] [2020-11-07 06:40:11,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:40:11,628 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:11,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:11,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1058351037, now seen corresponding path program 2 times [2020-11-07 06:40:11,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:11,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727821116] [2020-11-07 06:40:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:12,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:12,061 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 06:40:12,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727821116] [2020-11-07 06:40:12,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:12,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-07 06:40:12,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304647708] [2020-11-07 06:40:12,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 06:40:12,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:12,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 06:40:12,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-11-07 06:40:12,064 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 15 states. [2020-11-07 06:40:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:12,752 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-11-07 06:40:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 06:40:12,752 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2020-11-07 06:40:12,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:12,753 INFO L225 Difference]: With dead ends: 36 [2020-11-07 06:40:12,753 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:40:12,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-11-07 06:40:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:40:12,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:40:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:40:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:40:12,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-11-07 06:40:12,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:12,755 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:40:12,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 06:40:12,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:40:12,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:40:12,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:40:12,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:40:13,291 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,291 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,291 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,291 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,291 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,292 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,292 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:13,292 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:13,292 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,292 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,292 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,292 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,293 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-07 06:40:13,293 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 06:40:13,293 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:40:13,293 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:40:13,293 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:13,294 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:40:13,294 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:40:13,294 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-07 06:40:13,294 INFO L266 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-07 06:40:13,294 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:40:13,294 INFO L266 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:40:13,294 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:40:13,295 INFO L262 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~mid~0) main_~lo~0)) (.cse0 (+ main_~hi~0 2))) (and (< 0 main_~mid~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-11-07 06:40:13,295 INFO L262 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~hi~0 .cse0) (<= (+ main_~lo~0 2) main_~hi~0) (<= .cse0 main_~hi~0))) [2020-11-07 06:40:13,295 INFO L262 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (= main_~lo~0 0) (<= 1 main_~mid~0)) [2020-11-07 06:40:13,295 INFO L262 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (= main_~lo~0 0) [2020-11-07 06:40:13,295 INFO L262 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (= main_~lo~0 0) [2020-11-07 06:40:13,296 INFO L269 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-11-07 06:40:13,296 INFO L262 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (= main_~lo~0 0) [2020-11-07 06:40:13,296 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 24 37) the Hoare annotation is: true [2020-11-07 06:40:13,296 INFO L269 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-11-07 06:40:13,296 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 24 37) the Hoare annotation is: true [2020-11-07 06:40:13,297 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~mid~0) main_~lo~0)) (.cse0 (+ main_~hi~0 1))) (and (<= (+ main_~lo~0 1) main_~hi~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-11-07 06:40:13,297 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2020-11-07 06:40:13,297 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (= main_~lo~0 0) [2020-11-07 06:40:13,297 INFO L262 CegarLoopResult]: At program point L30-2(lines 30 34) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~lo~0 main_~hi~0) (<= main_~hi~0 .cse0) (<= .cse0 main_~hi~0))) [2020-11-07 06:40:13,297 INFO L269 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-11-07 06:40:13,297 INFO L262 CegarLoopResult]: At program point L30-3(lines 30 34) the Hoare annotation is: (and (<= main_~lo~0 main_~hi~0) (<= main_~hi~0 main_~lo~0)) [2020-11-07 06:40:13,298 INFO L269 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-11-07 06:40:13,298 INFO L269 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-11-07 06:40:13,298 INFO L269 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-11-07 06:40:13,298 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-07 06:40:13,298 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2020-11-07 06:40:13,298 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:40:13,298 INFO L262 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:40:13,299 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:40:13,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:40:13 BoogieIcfgContainer [2020-11-07 06:40:13,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:40:13,322 INFO L168 Benchmark]: Toolchain (without parser) took 4545.66 ms. Allocated memory was 159.4 MB in the beginning and 203.4 MB in the end (delta: 44.0 MB). Free memory was 135.3 MB in the beginning and 100.8 MB in the end (delta: 34.4 MB). Peak memory consumption was 79.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:13,323 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 159.4 MB. Free memory is still 133.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:40:13,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.48 ms. Allocated memory is still 159.4 MB. Free memory was 134.4 MB in the beginning and 124.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:13,325 INFO L168 Benchmark]: Boogie Preprocessor took 75.37 ms. Allocated memory is still 159.4 MB. Free memory was 124.7 MB in the beginning and 123.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:13,326 INFO L168 Benchmark]: RCFGBuilder took 467.13 ms. Allocated memory is still 159.4 MB. Free memory was 123.1 MB in the beginning and 108.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:13,328 INFO L168 Benchmark]: TraceAbstraction took 3676.62 ms. Allocated memory was 159.4 MB in the beginning and 203.4 MB in the end (delta: 44.0 MB). Free memory was 142.0 MB in the beginning and 100.8 MB in the end (delta: 41.2 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:13,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 159.4 MB. Free memory is still 133.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.48 ms. Allocated memory is still 159.4 MB. Free memory was 134.4 MB in the beginning and 124.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.37 ms. Allocated memory is still 159.4 MB. Free memory was 124.7 MB in the beginning and 123.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 467.13 ms. Allocated memory is still 159.4 MB. Free memory was 123.1 MB in the beginning and 108.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3676.62 ms. Allocated memory was 159.4 MB in the beginning and 203.4 MB in the end (delta: 44.0 MB). Free memory was 142.0 MB in the beginning and 100.8 MB in the end (delta: 41.2 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: (lo <= hi && hi <= 2 * mid + lo) && 2 * mid + lo <= hi - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 77 SDslu, 208 SDs, 0 SdLazy, 290 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 43 LocationsWithAnnotation, 67 PreInvPairs, 82 NumberOfFragments, 178 HoareAnnotationTreeSize, 67 FomulaSimplifications, 266 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 43 FomulaSimplificationsInter, 660 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 13248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/7 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...