/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-invariants/odd.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:39:55,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:39:55,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:39:55,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:39:55,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:39:55,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:39:55,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:39:55,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:39:55,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:39:55,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:39:55,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:39:55,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:39:55,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:39:55,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:39:55,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:39:55,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:39:55,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:39:55,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:39:55,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:39:55,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:39:55,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:39:55,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:39:55,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:39:55,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:39:55,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:39:55,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:39:55,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:39:55,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:39:55,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:39:55,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:39:55,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:39:55,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:39:55,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:39:55,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:39:55,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:39:55,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:39:55,628 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:39:55,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:39:55,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:39:55,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:39:55,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:39:55,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:39:55,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:39:55,630 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:39:56,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:39:56,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:39:56,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:39:56,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:39:56,139 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:39:56,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/odd.c [2020-10-24 02:39:56,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef6835f1/06fad5be69c94755ba080fae13b74f9f/FLAGe99768612 [2020-10-24 02:39:57,005 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:39:57,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c [2020-10-24 02:39:57,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef6835f1/06fad5be69c94755ba080fae13b74f9f/FLAGe99768612 [2020-10-24 02:39:57,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef6835f1/06fad5be69c94755ba080fae13b74f9f [2020-10-24 02:39:57,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:39:57,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:39:57,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:39:57,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:39:57,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:39:57,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:39:57" (1/1) ... [2020-10-24 02:39:57,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@276320dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57, skipping insertion in model container [2020-10-24 02:39:57,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:39:57" (1/1) ... [2020-10-24 02:39:57,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:39:57,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:39:57,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:39:57,613 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:39:57,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:39:57,647 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:39:57,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57 WrapperNode [2020-10-24 02:39:57,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:39:57,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:39:57,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:39:57,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:39:57,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57" (1/1) ... [2020-10-24 02:39:57,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57" (1/1) ... [2020-10-24 02:39:57,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57" (1/1) ... [2020-10-24 02:39:57,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57" (1/1) ... [2020-10-24 02:39:57,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57" (1/1) ... [2020-10-24 02:39:57,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57" (1/1) ... [2020-10-24 02:39:57,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57" (1/1) ... [2020-10-24 02:39:57,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:39:57,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:39:57,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:39:57,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:39:57,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:39:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:39:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:39:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:39:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:39:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:39:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:39:57,789 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:39:57,789 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:39:57,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:39:57,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:39:57,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:39:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:39:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:39:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:39:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:39:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:39:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:39:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:39:58,321 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:39:58,321 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:39:58,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:58 BoogieIcfgContainer [2020-10-24 02:39:58,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:39:58,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:39:58,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:39:58,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:39:58,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:39:57" (1/3) ... [2020-10-24 02:39:58,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d75831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:39:58, skipping insertion in model container [2020-10-24 02:39:58,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:39:57" (2/3) ... [2020-10-24 02:39:58,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d75831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:39:58, skipping insertion in model container [2020-10-24 02:39:58,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:39:58" (3/3) ... [2020-10-24 02:39:58,334 INFO L111 eAbstractionObserver]: Analyzing ICFG odd.c [2020-10-24 02:39:58,348 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:39:58,354 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:39:58,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:39:58,402 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:39:58,402 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:39:58,402 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:39:58,402 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:39:58,403 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:39:58,403 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:39:58,403 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:39:58,403 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:39:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-24 02:39:58,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-24 02:39:58,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:39:58,435 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] [2020-10-24 02:39:58,436 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:39:58,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:39:58,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2080136508, now seen corresponding path program 1 times [2020-10-24 02:39:58,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:39:58,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82590311] [2020-10-24 02:39:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:39:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:58,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:39:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:39:58,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82590311] [2020-10-24 02:39:58,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:39:58,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 02:39:58,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579666632] [2020-10-24 02:39:58,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 02:39:58,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:39:58,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 02:39:58,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:39:58,861 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-10-24 02:39:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:39:59,058 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-24 02:39:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 02:39:59,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-24 02:39:59,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:39:59,086 INFO L225 Difference]: With dead ends: 53 [2020-10-24 02:39:59,087 INFO L226 Difference]: Without dead ends: 30 [2020-10-24 02:39:59,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:39:59,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-24 02:39:59,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-24 02:39:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-24 02:39:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-10-24 02:39:59,179 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2020-10-24 02:39:59,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:39:59,181 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-10-24 02:39:59,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 02:39:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-10-24 02:39:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-24 02:39:59,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:39:59,186 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] [2020-10-24 02:39:59,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:39:59,188 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:39:59,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:39:59,189 INFO L82 PathProgramCache]: Analyzing trace with hash -655890547, now seen corresponding path program 1 times [2020-10-24 02:39:59,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:39:59,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545929591] [2020-10-24 02:39:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:39:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:59,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:39:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:39:59,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545929591] [2020-10-24 02:39:59,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:39:59,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:39:59,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137778090] [2020-10-24 02:39:59,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:39:59,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:39:59,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:39:59,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:39:59,395 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 6 states. [2020-10-24 02:39:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:39:59,662 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-10-24 02:39:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:39:59,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-24 02:39:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:39:59,665 INFO L225 Difference]: With dead ends: 41 [2020-10-24 02:39:59,666 INFO L226 Difference]: Without dead ends: 34 [2020-10-24 02:39:59,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:39:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-24 02:39:59,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-24 02:39:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-24 02:39:59,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-10-24 02:39:59,680 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 27 [2020-10-24 02:39:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:39:59,681 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-10-24 02:39:59,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:39:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-10-24 02:39:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-24 02:39:59,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:39:59,682 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:39:59,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:39:59,683 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:39:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:39:59,684 INFO L82 PathProgramCache]: Analyzing trace with hash 218555764, now seen corresponding path program 1 times [2020-10-24 02:39:59,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:39:59,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993766892] [2020-10-24 02:39:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:39:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:59,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:39:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:39:59,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993766892] [2020-10-24 02:39:59,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:39:59,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 02:39:59,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58613515] [2020-10-24 02:39:59,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:39:59,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:39:59,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:39:59,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:39:59,894 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 7 states. [2020-10-24 02:40:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:40:00,113 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-10-24 02:40:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:40:00,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-24 02:40:00,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:40:00,114 INFO L225 Difference]: With dead ends: 34 [2020-10-24 02:40:00,115 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:40:00,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:40:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:40:00,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:40:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:40:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:40:00,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-10-24 02:40:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:40:00,118 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:40:00,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:40:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:40:00,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:40:00,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:40:00,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:40:00,597 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,597 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,598 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,598 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,598 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,598 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,599 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:40:00,599 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,599 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:40:00,599 INFO L277 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,599 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,599 INFO L277 CegarLoopResult]: At program point L3-6(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,599 INFO L277 CegarLoopResult]: At program point L3-7(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,600 INFO L277 CegarLoopResult]: At program point L3-8(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,600 INFO L277 CegarLoopResult]: At program point L3-9(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,600 INFO L277 CegarLoopResult]: At program point L3-10(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,600 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-24 02:40:00,600 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,601 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-24 02:40:00,601 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:40:00,601 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:40:00,601 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:40:00,601 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:40:00,601 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:40:00,602 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-10-24 02:40:00,602 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 11 18) the Hoare annotation is: true [2020-10-24 02:40:00,602 INFO L277 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-10-24 02:40:00,602 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2020-10-24 02:40:00,602 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 11 18) the Hoare annotation is: true [2020-10-24 02:40:00,602 INFO L270 CegarLoopResult]: At program point L13-1(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2020-10-24 02:40:00,603 INFO L270 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2020-10-24 02:40:00,603 INFO L270 CegarLoopResult]: At program point L13-4(line 13) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2020-10-24 02:40:00,603 INFO L270 CegarLoopResult]: At program point L13-5(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2020-10-24 02:40:00,603 INFO L270 CegarLoopResult]: At program point L13-6(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2020-10-24 02:40:00,603 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-24 02:40:00,604 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2020-10-24 02:40:00,604 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-24 02:40:00,604 INFO L270 CegarLoopResult]: At program point L6(lines 6 8) the Hoare annotation is: (or (<= 1 __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2020-10-24 02:40:00,604 INFO L270 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-24 02:40:00,604 INFO L277 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-10-24 02:40:00,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:40:00 BoogieIcfgContainer [2020-10-24 02:40:00,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:40:00,629 INFO L168 Benchmark]: Toolchain (without parser) took 3270.16 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 129.3 MB in the beginning and 123.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. [2020-10-24 02:40:00,629 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 152.0 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:40:00,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.51 ms. Allocated memory is still 152.0 MB. Free memory was 128.7 MB in the beginning and 119.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:40:00,632 INFO L168 Benchmark]: Boogie Preprocessor took 41.74 ms. Allocated memory is still 152.0 MB. Free memory was 119.8 MB in the beginning and 118.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:40:00,633 INFO L168 Benchmark]: RCFGBuilder took 632.09 ms. Allocated memory is still 152.0 MB. Free memory was 118.2 MB in the beginning and 135.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:40:00,634 INFO L168 Benchmark]: TraceAbstraction took 2299.42 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 134.9 MB in the beginning and 123.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 74.7 MB. Max. memory is 8.0 GB. [2020-10-24 02:40:00,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 152.0 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 279.51 ms. Allocated memory is still 152.0 MB. Free memory was 128.7 MB in the beginning and 119.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.74 ms. Allocated memory is still 152.0 MB. Free memory was 119.8 MB in the beginning and 118.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 632.09 ms. Allocated memory is still 152.0 MB. Free memory was 118.2 MB in the beginning and 135.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2299.42 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 134.9 MB in the beginning and 123.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 74.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 2 * (x / 2) + 1 <= x - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 48 SDslu, 144 SDs, 0 SdLazy, 97 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 60 PreInvPairs, 76 NumberOfFragments, 131 HoareAnnotationTreeSize, 60 FomulaSimplifications, 264 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 40 FomulaSimplificationsInter, 658 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 6184 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...